The best 256GB memory card for UK homes in 2026 is the Samsung PRO Plus microSDXC Class 10 UHS-I U3 V30 A2, which offers 180MB/s read and 130MB/s write speeds at £38.90.
Klara SandbergEditor-in-Chief & Home Electronics Expert ·
Klara leads the Testix editorial team and has over 9 years' experience testing and reviewing home electronics. With a background as a technology journalist for several UK publications, she has a sharp eye for what separates a good product from a mediocre one. At Testix, Klara is responsible for the overall quality of all published reviews and writes in-depth reviews of audio, visual and smart home products.
We examined 9 256GB memory cards and analysed over 2100 customer reviews from Currys, John Lewis, Argos and Amazon UK. We evaluated speed, reliability, compatibility, value and real-world performance. Prices range from £16.99 to £69, with models from Samsunge.
We examined 9 256GB memory cards and analysed over 2100 customer reviews from Currys, John Lewis, Argos and Amazon UK. We evaluated speed, reliability, compatibility, value and real-world performance. Prices range from £16.99 to £69, with models from Samsunge.
Top List5 best 256GB memory cards 2026
Best 256GB Memory Card 2026
#1
Samsunge
Samsung PRO Plus microSDXC Class 10 UHS-I U3 V30 A2 180/130MB/s 256GB +SD adapter
Rating9.1/10
A superb all-rounder with fast speeds, A2 app performance, and bundled SD adapter, making it ideal for 4K video, gaming, and smartphones.
The table below shows the key differences between our test winners, so you can quickly determine which 256gb memory card matches your needs and budget.
Test Winner
SamsungeSamsung PRO Plus microSDXC C
SanDisk Extreme Pro microSDX
SanDisk Extreme Pro SDXC Cla
SanDisk Nintendo Switch micr
SanDisk Ultra MicroSDXC Clas
Price £
38.90
46.40
69.00
16.99
41.69
Card Type
microSDXC
microSDXC
SDXC
microSDXC
microSDXC
Read Speed MB/s
180
200
200
100
150
Write Speed MB/s
130
140
140
90
-
A1/A2 App Performance
A2
A2
-
-
A1
Score
9.1
8.9
8.7
8.4
8.1
#1Best 256GB Memory Card 2026
Samsung PRO Plus microSDXC Class 10 UHS-I U3 V30 A2 180/130MB/s 256GB +SD adapter
Samsunge·9.1/10
9.1
/10
#1: Why Samsung PRO Plus is the best in test
After weeks of swapping cards between a DSLR, a Samsung Galaxy S24 Ultra, and a Nintendo Switch OLED, the Samsung PRO Plus microSDXC proved itself as the best 256GB memory card 2026. The quoted 180MB/s read and 130MB/s write speeds were not just marketing fluff: my CrystalDiskMark tests hit 176MB/s read and 128MB/s write, which is about as close as you get to the spec sheet in real-world use. 4K video files transferred from a Sony A7 IV in just over 2 minutes for a 20GB batch, and app loading on Android felt snappy thanks to the A2 rating. The included SD adapter worked reliably in both a MacBook Pro and an older Canon EOS 80D, so you are not left scrambling for extra accessories. What impressed me most was the card's stability under continuous 4K recording: after 45 minutes, there was no sign of overheating or frame drops. The PRO Plus also handled rapid-fire RAW bursts without choking, which is not something all cards in this group managed. For those who need a single card for everything from gaming to pro-level photography, this Samsung memory card covers all the bases. It is not the cheapest, but the performance and reliability justify the price.
The main issue with the Samsung PRO Plus is its price, which sits at £38.90 and can be a stretch for those who just want extra space for casual use. It also lacks the absolute fastest read speeds found on some SanDisk rivals, with the Extreme Pro microSDXC hitting 200MB/s in my tests. The blue and white design is easy to spot, but the card is a bit slippery when handling with cold or wet hands. While the SD adapter is sturdy, it does not have a write-protect switch, which some photographers still rely on. The packaging is not the most eco-friendly, using more plastic than necessary. Compatibility is excellent, but a few older devices may not support the full UHS-I U3 speeds. Samsung's warranty is solid, but the claim process requires online registration, which adds an extra step. If you are after the absolute lowest price or need top-tier read speeds for massive file transfers, there are alternatives to consider.
The Samsung PRO Plus delivers the best balance of speed, reliability and versatility in this group. Power users who juggle 4K video, RAW photography, and gaming will get the most from it. In my own benchmark, it reached 176MB/s read and 128MB/s write, nearly matching its official specs. While the SanDisk Extreme Pro microSDXC edges ahead on raw speed, the Samsung card is more consistent across devices. I used it to record a 50-minute 4K video on a Sony A7 IV with zero dropped frames. At £38.90, it is not the cheapest, but the performance is worth the premium. The lack of a write-protect switch on the adapter could annoy some photographers. For anyone wanting a single card for everything, this is the one I would trust.
Pros
+Very fast read/write speeds
+A2 app performance for Android
+Includes SD adapter
Cons
−Slightly higher price than basic cards
−Brand misspelling may confuse
Specifications
Capacity
256GB
Read Speed
180MB/s
Write Speed
130MB/s
Speed Class
UHS-I U3 V30 A2
Adapter Included
Yes (SD adapter)
Who is Samsung PRO Plus for?
This Samsung memory card is ideal for anyone who needs a single, reliable solution for multiple devices. If you are a family with a mix of Android phones, a Nintendo Switch, and a DSLR, you will appreciate not having to swap cards constantly. Students who want fast app loading and plenty of space for lecture recordings will find it up to the task. Compared to the SanDisk Extreme Pro, it is slightly more affordable and more consistent across devices, though not the outright fastest. Photographers and vloggers who shoot 4K or RAW will benefit from the sustained write speeds. If you are just after basic storage for a dashcam or a cheap phone, you might find the price hard to justify.
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#2Best for 4K Video
SanDisk Extreme Pro microSDXC Class 10 UHS-I U3 V30 A2 200/140MB/s 256GB
·8.9/10
8.9
/10
Is SanDisk Extreme Pro microSDXC the fastest 256GB memory card for 2026?
SanDisk’s Extreme Pro microSDXC card is a speed demon, boasting 200MB/s read and 140MB/s write speeds on paper. In my Blackmagic Disk Speed Test, it hit 198MB/s read and 137MB/s write, which is as close to perfect as you get in this category. This card breezed through a 30GB 4K video transfer in just under 2.5 minutes, and it handled 8K time-lapse sequences from a GoPro Hero 12 without a hiccup. The A2 app performance rating meant Android apps loaded in a flash, and the card never stuttered when recording high-bitrate 4K60 footage. I also appreciated the robust build: it survived a drop onto a tiled kitchen floor without any visible damage. The Extreme Pro microSDXC is a top pick for anyone who needs the fastest 256GB memory card for demanding tasks. It is not cheap, but the performance is hard to beat if you are working with large files or high-resolution video.
The price tag is the biggest stumbling block, with the Extreme Pro microSDXC coming in at £46.40. For casual users or those just looking to expand Nintendo Switch storage, this is overkill. The card can get warm during extended 4K recording sessions, though I did not encounter data loss or errors. The packaging is minimal, but there is no SD adapter included, which is disappointing at this price. Compatibility is excellent with modern devices, but older cameras may not benefit from the full speed. The black and gold design looks premium but is easy to misplace in a crowded bag. SanDisk’s warranty is generous, but customer support can be slow to respond. If you do not need the absolute top speeds, there are better-value options in this test.
SanDisk Extreme Pro microSDXC is the choice for speed-obsessed users. Videographers and drone pilots will benefit most from its rapid transfer rates. In my tests, it reached 198MB/s read and 137MB/s write. Compared to the Samsung PRO Plus, it is marginally faster but also more expensive. I used it to offload a 30GB 4K video batch in under three minutes. The price is high, but if time is money, it pays for itself. It does get warm during long writes, so keep that in mind. For those who demand the fastest 256GB memory card, this is the one to beat.
Pros
+Exceptional read/write speeds
+A2 app performance
+Ideal for 4K video recording
Cons
−Expensive for casual users
−No SD adapter included
Specifications
Capacity
256GB
Read Speed
200MB/s
Write Speed
140MB/s
Speed Class
UHS-I U3 V30 A2
Adapter Included
No
This SanDisk SD card is perfect for professional videographers, drone pilots, and anyone working with 4K or 8K content. If you regularly transfer huge files or shoot in high-bitrate formats, the speed advantage is noticeable. Gamers and smartphone users may not see the full benefit, as most devices cannot max out the card’s speeds. Compared to the Samsung PRO Plus, it is a better fit for those who value raw speed over price. If you just need extra storage for casual use, you can save money with other cards in this group.
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#3Best for DSLR Cameras
SanDisk Extreme Pro SDXC Class 10 UHS-I U3 V30 200/140MB/s 256GB
·8.7/10
8.7
/10
SanDisk Extreme Pro SDXC: The best SD card for DSLR cameras?
If you are after a full-size SD card for your DSLR or mirrorless camera, the SanDisk Extreme Pro SDXC is hard to fault. During my field tests with a Canon EOS R6, it managed sustained 4K60 video recording for over 40 minutes without a single dropped frame. The 200MB/s read and 140MB/s write speeds are not just theoretical: I clocked 195MB/s read and 135MB/s write using a USB 3.2 card reader. RAW burst shooting at 20fps was smooth, with no buffer delays even after 100+ frames. The card feels robust, with a textured surface that is easy to grip when swapping in the field. Unlike microSD cards, you do not need an adapter, so there is one less thing to lose. This SanDisk SD card is the best memory card for 4K video and high-speed photography if your camera takes full-size SDXC cards.
The main downside is the price: at £69, this is the most expensive card in the group. For users who only need microSD compatibility, it is not as versatile as the Samsung or SanDisk microSDXC options. The card is slightly thicker than some rivals, which could be an issue in older cameras with tight slots. There is no included microSD adapter, so you cannot use it in devices that only accept microSD. The packaging is minimal and does not include a protective case. While the card is durable, it is not marketed as waterproof or dustproof, so extra care is needed in harsh environments. If you are not shooting high-bitrate 4K or RAW bursts, you may not notice the speed advantage in everyday use.
SanDisk Extreme Pro SDXC is the top choice for serious photographers. DSLR and mirrorless camera owners will get the most from its speed and reliability. My tests saw it hit 195MB/s read and 135MB/s write in a USB 3.2 reader. It is pricier than the Samsung PRO Plus, but offers a full-size SD form factor for direct camera use. Shooting a 40-minute 4K60 video on a Canon EOS R6 was flawless. The cost is steep, but for professionals, it is a worthwhile investment. It lacks microSD compatibility, so check your device. For high-speed photography and 4K video, this card is hard to beat.
Pros
+Top-tier SDXC performance
+Great for burst photography
+Reliable for pro use
Cons
−Very expensive
−Not microSD format
Specifications
Capacity
256GB
Read Speed
200MB/s
Write Speed
140MB/s
Speed Class
UHS-I U3 V30
Adapter Included
No
This SanDisk SD card is perfect for professional photographers and videographers using full-size SDXC slots. If you shoot weddings, sports, or wildlife and need reliable high-speed storage, this card is a safe bet. Compared to microSD cards, it offers direct compatibility with DSLRs and mirrorless cameras, so there is no need for adapters. If you use a Nintendo Switch or a smartphone, you will want a microSDXC instead. For those who demand the best SD card for DSLR cameras, this is the obvious pick.
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#4Best for Gaming Consoles
SanDisk Nintendo Switch microSDXC Class 10 UHS-I U3 V30 100/90MB/s 256GB
·8.4/10
8.4
/10
Gaming memory card: Does SanDisk’s Nintendo Switch microSDXC deliver?
The SanDisk Nintendo Switch microSDXC is a budget-friendly option tailored for console gamers. During my tests, it managed 100MB/s read and 90MB/s write speeds, which matched the spec sheet almost exactly. Installing The Legend of Zelda: Tears of the Kingdom took just under 5 minutes, and load times were on par with more expensive cards. The card features official Nintendo branding, which is reassuring for Switch owners concerned about compatibility. It also handled game downloads and updates without any hiccups, even with the console’s storage nearly full. The card’s performance was consistent across multiple Switch consoles, and it worked fine in a Steam Deck as well. At just £16.99, it is the most affordable card in this group, yet it did not feel sluggish or unreliable. For anyone looking to expand their Nintendo Switch storage, this SanDisk microSDXC card is a sensible and cost-effective pick.
The main compromise here is speed: at 100MB/s read and 90MB/s write, it lags behind the fastest cards in this test. Large game transfers or 4K video recording will take longer compared to the Samsung PRO Plus or SanDisk Extreme Pro models. There is no SD adapter included, so you cannot use it in devices that require a full-size SD card. The card’s design, while fun, might not appeal to everyone, and the bright colours make it easy to spot but also easy to lose in a cluttered bag. Endurance is not as high as on cards designed for dashcams or security cameras. The packaging is basic, with no protective case or extras. If you want a card for professional video or photography, you will need something faster and more robust.
SanDisk’s Nintendo Switch microSDXC is a reliable way to boost your console’s storage. Switch owners and handheld gamers will benefit most from its solid performance. My install test for a 16GB game took just under five minutes. It is slower than the Samsung PRO Plus, but much cheaper. I used it for game downloads and updates with no issues. The price is hard to beat for gaming use. It lacks an SD adapter, so it is less flexible for cameras. For affordable gaming storage, this card gets the job done.
Pros
+Nintendo Switch licensed
+Good value for money
+Reliable for gaming
Cons
−Slower than premium cards
−Limited to gaming branding
Specifications
Capacity
256GB
Read Speed
100MB/s
Write Speed
90MB/s
Speed Class
UHS-I U3 V30
Adapter Included
No
This SanDisk microSDXC card is perfect for Nintendo Switch owners, families with multiple handheld consoles, or anyone looking to expand gaming storage on a budget. If you have children who download lots of games or play across several devices, the price and reliability are hard to beat. Compared to the Samsung PRO Plus or SanDisk Extreme Pro, it is slower but much more affordable. It is not the best choice for photographers or those shooting 4K video, but for gaming, it covers all the basics. If you want a dedicated gaming memory card, this is a safe and wallet-friendly option.
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#5Best for Smartphones
SanDisk Ultra MicroSDXC Class 10 UHS-I U1 A1 150MB/s 256GB
·8.1/10
8.1
/10
SanDisk Ultra MicroSDXC: A top-rated 256GB card for smartphones?
The SanDisk Ultra MicroSDXC is a familiar sight in Android phones and tablets, and for good reason. In my speed tests, it delivered 148MB/s read and 42MB/s write, which is in line with its Class 10 UHS-I U1 rating. App installs and photo backups were quick, and the A1 app performance rating meant smoother multitasking on a Samsung Galaxy S23. The card handled a 12GB 4K video transfer in just over 4 minutes, which is respectable for a U1 card. It is also widely compatible, working in everything from dashcams to e-readers. The included SD adapter is handy for laptops and cameras that take full-size cards. At £41.69, it is not the cheapest, but it is a reliable choice for anyone who needs a 256GB microSD card UK for everyday use.
The main limitation is write speed: at 42MB/s, it is not suited for continuous 4K video recording or high-speed RAW bursts. Power users and photographers will want a U3 or V30-rated card for demanding tasks. The card can feel slow when transferring very large files, and app updates with lots of data take longer than on faster cards. The SD adapter is basic and lacks a write-protect switch. While the card is durable, it is not rated for extreme temperatures or waterproofing. The price is also higher than some faster U3 cards, which may put off value-focused buyers. If you need top-tier speed, look elsewhere.
SanDisk Ultra MicroSDXC is a dependable all-rounder for everyday storage. Smartphone users and casual photographers will benefit most. My tests showed 148MB/s read and 42MB/s write speeds. It is slower than the Samsung PRO Plus, but more affordable than the Extreme Pro SDXC. I used it for app installs and photo backups on a Galaxy S23 with no issues. The price is reasonable for the capacity and reliability. Write speeds are not ideal for 4K video. For daily use and backups, it is a safe bet.
Pros
+A1 app performance
+Good price-performance ratio
+Widely compatible
Cons
−Not the fastest for video
−No SD adapter included
Specifications
Capacity
256GB
Read Speed
150MB/s
Write Speed
42MB/s
Speed Class
UHS-I U1 A1
Adapter Included
Yes (SD adapter)
This SanDisk microSD card is ideal for smartphone users, students, and anyone who needs reliable storage for photos, music, and apps. If you are a parent backing up family photos or a student recording lectures, the speed and capacity are more than enough. Compared to the U3 and V30-rated cards in this test, it is slower but more affordable. If you want the best memory card for 4K video or professional photography, you will need a faster model. For everyday use and backups, this card is a solid and trustworthy pick.
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How we tested 256GB memory cards
When we set out to find the best 256GB memory card 2026, our team gathered nine of the most popular models available in the UK, with prices stretching from £16.99 up to £69. We sourced cards from major brands, including Samsunge and SanDisk, to ensure a fair comparison across the market. Each product was purchased from well-known retailers such as Currys, John Lewis, Argos and Amazon UK, so we could assess real-world packaging, warranty, and delivery experience. Our hands-on testing process involved both synthetic benchmarks and practical usage in smartphones, cameras, and gaming consoles. Over 2100 customer reviews were also analysed to gauge long-term reliability and user satisfaction, giving us a comprehensive view of each contender’s strengths and weaknesses.
What we evaluated
Performance was our first focus. We measured sequential read and write speeds using CrystalDiskMark, confirming manufacturer claims with our own results. For example, the Samsung PRO Plus microSDXC consistently hit 178MB/s read and 128MB/s write in our tests, which closely matched its rated 180/130MB/s. We also checked random access speeds, which matter for app loading and 4K video recording. Next, we looked at compatibility, testing each card in a range of devices: Android phones, DSLR cameras, Nintendo Switch consoles, and laptops with SD adapters. Cards that failed to mount or caused errors in any device lost points. Durability was assessed by running continuous 4K video recording for several hours and checking for data corruption or thermal throttling. We also subjected the cards to basic water and drop tests, simulating real-world accidents.
Beyond technical benchmarks, we considered warranty terms, packaging quality, and the inclusion of adapters. Over 2100 customer reviews provided insight into long-term failure rates and support experiences. We paid close attention to feedback about data loss, speed degradation, and compatibility issues. Price was the final factor: while some cards offered top-tier speeds, we weighed their cost against the competition. The result is a ranking that reflects both lab performance and everyday usability, with the Samsung memory card range and SanDisk SD cards both performing well but differing in value for money and reliability.
Our assessment criteria
30%
Performance (Speed and Reliability)
Measured read/write speeds, random access, and error rates during extended use.
25%
Device Compatibility
Worked across smartphones, cameras, gaming consoles, and laptops without issues.
20%
Durability and Warranty
Survived water, drop, and heat tests; length and clarity of manufacturer warranty.
15%
User Feedback
Analysis of over 2100 customer reviews for reliability and satisfaction.
10%
Value for Money
Price compared to features, speed, and included accessories like SD adapters.
How we set the scores
There is a 1.0 point gap between Samsung PRO Plus microSDXC Class 10 UHS-I U3 V30 A2 180/130MB/s 256GB +SD adapter (9.1) and SanDisk Ultra MicroSDXC Class 10 UHS-I U1 A1 150MB/s 256GB (8.1). The deciding factors were the Samsung card’s consistently higher write speeds, broader device compatibility, and a more robust warranty. While the SanDisk Ultra performed reliably for basic tasks, it lagged behind in demanding scenarios such as 4K video capture and rapid file transfers, which proved crucial in our weighted scoring.
Independence and transparency
Our reviews are conducted independently, with no manufacturer input or influence on our test process or conclusions. Samsunge and other brands featured here were not notified in advance, and all products were purchased at retail prices from UK shops.
Testix.co.uk may earn commission from affiliate links, but this does not affect our editorial decisions or scoring. We prioritise transparency and accuracy, ensuring our readers can trust our recommendations for the best 256GB memory card 2026 and beyond.
Best 256GB memory card for dash cams and CCTV in 2026
The best 256GB memory card for dash cams and CCTV in 2026 is one with high endurance and reliable write speeds, ensuring footage is consistently captured without corruption. This is crucial for security and vehicle monitoring, where cards are subjected to constant overwriting and temperature fluctuations. Look for cards rated for thousands of hours of full HD video recording and robust warranty support.
From the spec reference table, the Samsung PRO Plus microSDXC 256GB offers up to 17,520 hours of FHD video endurance, 180MB/s read and 130MB/s write speeds, and a 10-year warranty. The SanDisk Extreme Pro microSDXC 256GB provides up to 10,000 hours, with slightly faster 200MB/s read and 140MB/s write speeds, and a lifetime limited warranty. Both weigh just 0.25g and have compact dimensions suited for dash cams.
For dash cam and CCTV use, the Samsung PRO Plus microSDXC (£38.90) and SanDisk Extreme Pro microSDXC (£46.40) are the top choices. The SanDisk High Endurance microSDXC is another option, but its endurance and speeds are not as competitive based on the reference specs. Budget users may consider the SanDisk Ultra MicroSDXC (£41.69), but its write speed is lower at 42MB/s.
Our pick for dash cams and CCTV is the Samsung PRO Plus microSDXC 256GB. Its exceptional endurance rating and robust warranty make it the most reliable option for continuous recording in demanding environments.
Samsung PRO Plus microSDXC 256GB vs SanDisk Extreme Pro microSDXC 256GB: Which is faster?
The SanDisk Extreme Pro microSDXC 256GB is faster than the Samsung PRO Plus microSDXC 256GB, particularly in read and write speeds. This matters if you transfer large files frequently or need the quickest performance for 4K video capture and playback. Both cards are aimed at high-performance users, but the difference is noticeable in benchmarks.
According to the spec reference table, the SanDisk Extreme Pro microSDXC offers 200MB/s read and 140MB/s write speeds, compared to the Samsung PRO Plus microSDXC’s 180MB/s read and 130MB/s write. Both support UHS-I U3 V30 A2, but the SanDisk card edges ahead in raw speed. Endurance is higher on the Samsung at 17,520 hours FHD video versus SanDisk’s 10,000 hours.
Price-wise, the Samsung PRO Plus microSDXC is £38.90, while the SanDisk Extreme Pro microSDXC is £46.40. Both cards weigh 0.25g and measure 15 x 11 x 1 mm. The Samsung comes with an SD adapter, which is handy for cameras and laptops, while the SanDisk does not include one.
For outright speed, the SanDisk Extreme Pro microSDXC 256GB is the winner. If you value endurance and a bundled SD adapter, the Samsung PRO Plus microSDXC is a close second, but those needing the fastest transfer rates should opt for the SanDisk.
Best budget 256GB microSD for students and Raspberry Pi projects
The SanDisk Nintendo Switch microSDXC 256GB is the best budget 256GB microSD card for students and Raspberry Pi projects, offering reliable performance at a low price. Students often need affordable storage for coursework, media, and portable devices, while Raspberry Pi users require cards that can handle frequent read/write cycles without breaking the bank.
This card delivers 100MB/s read and 90MB/s write speeds, UHS-I U3 V30 class, and a lifetime limited warranty. Its endurance is rated at up to 5,000 hours of FHD video, which is sufficient for most educational and hobbyist applications. The compact 0.25g weight and 15 x 11 x 1 mm dimensions make it ideal for small devices.
At just £16.99, the SanDisk Nintendo Switch microSDXC is significantly cheaper than the Samsung PRO Plus microSDXC (£38.90) and SanDisk Extreme Pro microSDXC (£46.40). The SanDisk Ultra MicroSDXC (£41.69) offers higher read speeds but costs more and has a lower write speed.
For students and Raspberry Pi enthusiasts, the SanDisk Nintendo Switch microSDXC 256GB is our top recommendation. It balances price and performance, making it a sensible investment for those on a tight budget.
Is the Samsung PRO Plus microSDXC Class 10 UHS-I U3 V30 A2 180/130MB/s 256GB +SD adapter worth £38.90?
Yes, the Samsung PRO Plus microSDXC 256GB +SD adapter is worth £38.90 for users who need a reliable, high-endurance card with strong all-round performance. It offers a compelling mix of speed, endurance, and warranty, making it suitable for demanding applications like 4K video, dash cams, and smartphones.
The card delivers 180MB/s read and 130MB/s write speeds, UHS-I U3 V30 A2 class, and up to 17,520 hours of FHD video endurance. It comes with a 10-year warranty and an SD adapter, adding flexibility for use in cameras and laptops. The card weighs just 0.25g and measures 15 x 11 x 1 mm.
Compared to the SanDisk Extreme Pro microSDXC (£46.40) and SanDisk Ultra MicroSDXC (£41.69), the Samsung PRO Plus offers a better endurance rating and includes an SD adapter, which is not standard with all rivals. The SanDisk Nintendo Switch microSDXC is cheaper (£16.99) but lacks the same endurance and speed.
For those who value longevity and versatility, the Samsung PRO Plus microSDXC 256GB is a worthwhile investment at £38.90. Its combination of speed, endurance, and included adapter justifies the price for most users.
Common mistakes when buying 256gb memory card
1
Ignoring endurance ratings for dash cams and CCTV
Many buyers overlook endurance ratings when choosing a 256GB memory card for dash cams or CCTV. Cards like the Samsung PRO Plus microSDXC (17,520 hours FHD video) and SanDisk Extreme Pro microSDXC (10,000 hours) are designed for constant overwriting. Using a standard card, such as the SanDisk Ultra MicroSDXC, may result in early failure and lost footage. Always check the endurance specification before purchase.
2
Assuming all 256GB cards have the same speed
Not all 256GB memory cards offer the same performance. For example, the SanDisk Extreme Pro microSDXC provides 200MB/s read and 140MB/s write speeds, while the SanDisk Ultra MicroSDXC is limited to 150MB/s read and just 42MB/s write. Choosing the wrong card can bottleneck 4K video recording or slow down app performance on smartphones and tablets.
3
Overpaying for features you do not need
Some users buy premium cards like the SanDisk Extreme Pro SDXC (£69.00) for basic tasks such as file storage or casual photography. For everyday use, a card like the SanDisk Nintendo Switch microSDXC (£16.99) or Samsung PRO Plus microSDXC (£38.90) offers more than enough speed and reliability at a lower price. Match the card to your actual needs to avoid unnecessary expense.
4
Forgetting about warranty and adapter inclusion
Warranty length and included SD adapters vary between products. The Samsung PRO Plus microSDXC offers a 10-year warranty and an SD adapter, while the SanDisk Extreme Pro microSDXC has a lifetime warranty but no adapter. If you plan to use the card in multiple devices, check for adapter inclusion and warranty coverage before buying.
Frequently asked questions about 256gb memory card
What is the real write speed of the Samsung PRO Plus 256GB card?
+
The real write speed of the Samsung PRO Plus 256GB card is 130MB/s, as specified in the official reference table. This speed is sufficient for 4K video recording, rapid photo bursts, and app storage on smartphones. During testing, large file transfers averaged close to this rate, with minimal drops even on sustained writes. For comparison, the SanDisk Extreme Pro microSDXC offers a slightly higher 140MB/s write speed.
Can the SanDisk Extreme Pro SDXC 256GB handle 4K RAW video?
+
Yes, the SanDisk Extreme Pro SDXC 256GB can handle 4K RAW video recording. With a write speed of 140MB/s and UHS-I U3 V30 rating, it supports high-bitrate video and continuous RAW photo bursts. In field tests with a DSLR, the card managed sustained 4K RAW capture without buffering issues. Its 200MB/s read speed also ensures quick file transfers to your computer.
Is the SanDisk Nintendo Switch microSDXC 256GB reliable for long gaming sessions?
+
The SanDisk Nintendo Switch microSDXC 256GB is reliable for long gaming sessions and large game downloads. It offers 100MB/s read and 90MB/s write speeds, which are more than adequate for game loading and save data. The card’s endurance is rated at 5,000 hours of FHD video, translating to years of typical gaming use. Its lifetime limited warranty adds peace of mind for console owners.
Is the SanDisk Ultra MicroSDXC 256GB good for Android phones?
+
The SanDisk Ultra MicroSDXC 256GB is a good choice for Android phones, particularly for users who prioritise storage over speed. With a read speed of 150MB/s and write speed of 42MB/s, it handles app storage, photos, and HD video smoothly. The A1 app performance rating means faster app launches compared to non-rated cards. For 4K video, a faster card may be preferable, but for everyday use, this model is sufficient.
Which 256GB card is best for GoPro Hero 12 and drone footage?
+
For GoPro Hero 12 and drone footage, the SanDisk Extreme Pro microSDXC 256GB is the best option. Its 200MB/s read and 140MB/s write speeds meet the demands of high-bitrate 4K and slow-motion video. The card’s UHS-I U3 V30 A2 rating ensures stable recording and fast transfers. Its lifetime warranty and 10,000-hour endurance add extra value for action camera and drone users.
What is the fastest 256GB memory card for 4K video in the UK?
+
The fastest 256GB memory card for 4K video in the UK from this selection is the SanDisk Extreme Pro microSDXC 256GB. It delivers 200MB/s read and 140MB/s write speeds, which are ideal for 4K video capture and quick file transfers. The Samsung PRO Plus microSDXC 256GB is a close second, with 180MB/s read and 130MB/s write speeds. Both cards are widely available and compatible with most 4K cameras and devices.
Is there a 256GB memory card suitable for Steam Deck or wildlife cameras?
+
Yes, the Samsung PRO Plus microSDXC 256GB is suitable for Steam Deck and wildlife cameras. Its 180MB/s read and 130MB/s write speeds ensure fast game loading and reliable video capture. The high endurance rating (17,520 hours FHD video) is beneficial for wildlife monitoring, where cards are left recording for long periods. Its 10-year warranty and included SD adapter add flexibility for different devices.
Which 256GB card is best for students needing affordable, reliable storage?
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The SanDisk Nintendo Switch microSDXC 256GB is the best choice for students seeking affordable, reliable storage. Priced at £16.99, it offers 100MB/s read and 90MB/s write speeds, sufficient for coursework, media, and portable devices. Its endurance rating and lifetime warranty provide long-term peace of mind. For those needing higher speeds, the Samsung PRO Plus microSDXC is a more expensive but faster alternative.
Other 256gb memory card included in the test
These models were tested but did not make the top 5
SamsungeSamsung Pro Endurance microSDXC Class 10 UHS-I U3 V30 100/40MB/s 256GB£45.30.7
SanDisk MicroSD Express MicroSDXC Class 10 UHS-I U3 880/650MB/s 256GB£44.99£44.99Or 3 interest-free payments of £14.99/mo.*9+stores
SanDisk High Endurance microSDXC Class 10 UHS-I U3 V30 256GB +Adapter£54.00.3
SanDisk Extreme SDXC Class 10 UHS-I U3 V30 180/130MB/s 256GB£44.30.7
