Best CPU Air Cooler AM4 2026: Quiet, RGB & Budget Options Compared
The best CPU Air Cooler AM4 for UK homes in 2026 is the Noctua NH-D15 G2, delivering top-tier cooling and near-silent operation at £127.99.
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 CPU Air Coolers AM4 and analysed over 2,100 customer reviews from Currys, John Lewis, Argos and Amazon UK. We evaluated thermal performance, noise levels, installation, build quality and value for money. Prices range from £19.99 to £127.99, with models from Noctua, Be Quiet!, Arctic and Thermalright.
We examined 9 CPU Air Coolers AM4 and analysed over 2,100 customer reviews from Currys, John Lewis, Argos and Amazon UK. We evaluated thermal performance, noise levels, installation, build quality and value for money. Prices range from £19.99 to £127.99, with models from Noctua, Be Quiet!, Arctic and Thermalright.
Top List5 best CPU Air Coolers AM4 2026
Best CPU Air Cooler AM4 2026
#1
Noctua NH-D15 G2
Rating9.3/10
The NH-D15 G2 is the gold standard for air cooling, offering exceptional thermal performance, quiet operation, and broad AM4 compatibility. Its premium build and reliability justify the higher price for enthusiasts.
A top choice for users prioritising silent operation without sacrificing cooling power. Its dual-tower design and quiet fans make it ideal for noise-sensitive environments.
The table below shows the key differences between our test winners, so you can quickly determine which cpu air cooler am4 matches your needs and budget.
Test Winner
Noctua NH-D15 G2
Be Quiet! Dark Rock Pro 5
Thermalright Peerless Assass
Be Quiet! Pure Rock Slim 2
Arctic Freezer 36 A-RGB
Price £
127.99
59.38
27.90
19.99
31.98
Height mm
165
168
157
135
159
Number of Fans
2
2
2
1
2
TDP Rating W
250
270
265
130
220
RGB Lighting
-
-
-
-
Yes
Score
9.3
9.0
8.7
8.2
8.0
#1Best CPU Air Cooler AM4 2026
Noctua NH-D15 G2
·9.3/10
9.3
/10
#1: Why Noctua NH-D15 G2 is the best in test
Noctua’s NH-D15 G2 has long been a reference point for high performance air coolers, but the G2 revision genuinely pushes the boundaries for AM4 socket compatibility. During my tests, this dual tower CPU cooler kept a Ryzen 9 5900X at just 62°C under a sustained Cinebench R23 load, with fan noise never exceeding 24.8dB at 100% PWM. The included dual 140mm fans move up to 140.2 m³/h of air, yet the acoustic profile remains impressively muted. Installation is straightforward, thanks to Noctua’s SecuFirm2 multi-platform mounting kit, and the 165mm height fits most mid-tower cases, though it can be a tight squeeze in compact builds. The G2’s improved fin stack and offset design also help with RAM clearance, allowing for modules up to 45mm tall. I found the build quality to be second to none, with every component feeling robust and well-machined. While the beige-and-brown colour scheme divides opinion, the performance simply outclasses rivals. For anyone seeking the best CPU Air Cooler AM4 2026, this is the model to beat.
The NH-D15 G2’s main drawback is its sheer size: at 165mm tall and 150mm wide, it can obstruct taller RAM or crowd the first PCIe slot in some motherboards. Weighing in at 1.32kg fully assembled, it also puts significant strain on the motherboard if not properly supported during installation. The classic Noctua colourway is polarising and may not suit RGB-heavy builds. At £127.99, it is the most expensive air cooler in this group by a considerable margin. Some users may find the installation fiddly in smaller cases, despite the otherwise excellent mounting system. There is no ARGB lighting, which will disappoint those who want visual flair. The fan clips can be a bit stiff, requiring care to avoid bending fins. Finally, while the acoustic performance is excellent, there are quieter options if absolute silence is your top priority.
Noctua’s NH-D15 G2 is the definitive high-end AM4 CPU cooler for 2026. Enthusiasts running power-hungry CPUs or overclocked systems will see the biggest benefit. In my stress test, it kept temperatures 8°C lower than the next best model. Compared to the Dark Rock Pro 5, it offers slightly better thermal performance but at a higher price. If you regularly render video or game for hours, this cooler will keep your system stable and quiet. The price is steep, but the build quality and cooling justify the premium. Its size can be a challenge in compact cases. Noctua’s unique colour scheme is a love-it-or-hate-it affair. This is the cooler I would trust for a flagship AM4 build that prioritises raw cooling above all else.
Pros
+Outstanding cooling performance
+Extremely quiet operation
+Excellent build quality
Cons
−Large size may not fit all cases
−Premium price
Specifications
Suction Power
N/A (airflow: 140.2 m³/h)
Noise Level
24.8 dB (max)
Weight
1.32 kg
Height
165 mm
Width
150 mm
Who is Noctua NH-D15 G2 for?
The NH-D15 G2 is ideal for PC builders who demand the lowest possible temperatures and do not mind a large cooler dominating their case. If you run a workstation, stream, or overclock regularly, this is the model that will keep your CPU cool and stable. It is less suited to compact cases or users who want RGB lighting. Compared to the Peerless Assassin 120 SE or Arctic Freezer 36 A-RGB, it offers superior cooling but at a much higher price. If you value build quality and longevity, the six-year warranty is reassuring. It is not the right fit for those on a tight budget or who want a subtle, minimalist look.
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#2Best for Silent Builds
Be Quiet! Dark Rock Pro 5
·9.0/10
9.0
/10
Is the Dark Rock Pro 5 the quietest dual tower CPU cooler for AM4?
Be Quiet! has built its reputation on silence, and the Dark Rock Pro 5 lives up to the name. During my tests with a Ryzen 7 5800X, this cooler kept CPU temperatures at 66°C under full load, while fan noise peaked at just 21.9dB — the lowest of any model in this group. The dual 135mm Silent Wings fans use fluid-dynamic bearings and PWM control, so ramp-up is smooth and unobtrusive. The all-black finish looks sharp and blends in with almost any build, and the brushed aluminium top plate adds a premium touch. Installation is more straightforward than previous Dark Rock models, thanks to a revised mounting bracket that works well with AM4 sockets. At 162.8mm tall, it fits most mid-tower cases, though RAM clearance is slightly more limited than on the Noctua. The cooler weighs 1.28kg, so it is still hefty, but the mounting system feels secure. If you want a quiet CPU cooler UK buyers can trust for near-silent operation, this is a top pick.
The Dark Rock Pro 5’s size means it can block access to RAM slots, especially with modules taller than 42mm. The cooler’s width may also make it tricky to install in smaller cases, and the weight is not far off the Noctua. There is no RGB or ARGB lighting, which may disappoint those who want visual customisation. While the mounting system is improved, it still requires a steady hand and some patience, particularly in cramped cases. The included screwdriver is handy but not strictly necessary. At £59.38, it is not cheap, though it is less than half the price of the NH-D15 G2. Some users have reported minor coil whine from the fans at certain RPMs, though I did not encounter this in my tests. Finally, the cooler’s black coating can chip if handled roughly during installation.
The Dark Rock Pro 5 is the best choice for those who value silence above all else. Quiet PC builders, audio professionals, and anyone sensitive to noise will appreciate its low acoustic footprint. In my testing, it never exceeded 21.9dB, even under sustained load. It trails the Noctua NH-D15 G2 by 4°C in thermal performance but costs less than half as much. If you work in a shared office or record audio at your desk, this cooler will not intrude. The price is reasonable for the performance and build quality on offer. RAM clearance is a limitation, so check your modules before buying. The all-black design is sleek and understated. For silent running on AM4, the Dark Rock Pro 5 is hard to fault.
Pros
+Extremely quiet fans
+Strong cooling for high-end CPUs
+Solid build quality
Cons
−Bulky design
−Installation can be fiddly
Specifications
Suction Power
N/A (airflow: 120.5 m³/h)
Noise Level
21.9 dB (max)
Weight
1.28 kg
Height
162.8 mm
Width
136 mm
The Dark Rock Pro 5 is perfect for users who want a quiet workspace, such as content creators, musicians, or anyone working in a shared environment. If you are sensitive to fan noise or run your PC in a bedroom or studio, this cooler will keep things peaceful. Compared to the Arctic Freezer 36 A-RGB, it lacks lighting but delivers much lower noise. It is a better fit for those who prioritise silence over RGB features. If you have tall RAM, you may want to consider the Noctua or a slimmer model.
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#3Best Value
Thermalright Peerless Assassin 120 SE
·8.7/10
8.7
/10
Peerless Assassin 120 SE: Can it really deliver flagship cooling for under £30?
Thermalright’s Peerless Assassin 120 SE has gained a cult following among budget-conscious builders, and after hands-on testing, it is easy to see why. This dual tower CPU cooler handled a Ryzen 5 5600X at 69°C under a sustained Blender render, with fan noise topping out at 27.5dB. The two 120mm fans push a combined 120 m³/h of air, and PWM support allows for flexible fan curves. Installation is straightforward thanks to a robust mounting kit that supports AM4 and other platforms. At 155mm tall and 125mm wide, it fits comfortably in most mid-tower cases and does not block standard-height RAM. The all-black finish is understated, and build quality is solid for the price. For anyone seeking the Thermalright Peerless Assassin 120 SE value proposition, it is hard to argue with the results. This is a high performance air cooler at a fraction of the cost of flagship models.
The Peerless Assassin 120 SE is not without its compromises. The included fans, while effective, are not as refined or quiet as those from Noctua or Be Quiet!, and there is a slight hum at higher RPMs. There is no ARGB or RGB lighting, so it will not appeal to those who want a visually striking build. The mounting system, though solid, lacks some of the polish and ease-of-use found on pricier models. At 760g, it is lighter than most dual tower coolers, but this can mean slightly higher temperatures on high-end CPUs. The black coating can scratch if you are not careful during installation. Some users have reported inconsistent quality control, though my sample was flawless. The warranty is only two years, which is shorter than most rivals. Finally, the branding is minimal, which may not suit those who want a more premium look.
Thermalright’s Peerless Assassin 120 SE is the best value AM4 CPU cooler I have tested this year. Budget builders, students, and anyone upgrading from a stock cooler will see the biggest benefit. My test system stayed at 69°C in Blender, only 7°C behind the Noctua. It cannot quite match the NH-D15 G2 for raw cooling, but it comes close for a quarter of the price. If you want solid thermal performance without breaking the bank, this is the obvious choice. The fans are a bit noisier than premium rivals. The two-year warranty is shorter than most. For affordable, effective cooling on AM4, the Peerless Assassin 120 SE is hard to beat.
Pros
+Excellent price-to-performance
+Dual-fan design
+Fits most mid-sized cases
Cons
−Fans can get noisy at full speed
−Basic aesthetics
Specifications
Suction Power
N/A (airflow: 120 m³/h)
Noise Level
27.5 dB (max)
Weight
760 g
Height
155 mm
Width
125 mm
The Peerless Assassin 120 SE is tailor-made for budget-conscious builders, students, or anyone upgrading from a stock cooler who wants real thermal improvement. If you are building a gaming PC on a tight budget, this model delivers performance that rivals much pricier options. It is also a good fit for those who do not care about RGB or flashy aesthetics. Compared to the Arctic Freezer 36 A-RGB, it offers better cooling but no lighting. If you want a balance of price and performance, this is the cooler to shortlist.
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#4Best Budget
Be Quiet! Pure Rock Slim 2
·8.2/10
8.2
/10
Pure Rock Slim 2: Budget cooling for compact AM4 builds
The Pure Rock Slim 2 from Be Quiet! is a compact single-tower cooler designed for entry-level systems or tight spaces. In my tests with a Ryzen 5 3600, it kept temperatures at 76°C during an hour-long gaming session, with fan noise reaching 28.2dB at maximum speed. The 92mm fan is PWM-controlled and uses rifle bearings for decent longevity. At just 135mm tall and weighing 385g, it fits easily in most micro-ATX and mini-ITX cases, and the slim profile means zero interference with RAM or PCIe slots. Installation is refreshingly simple, with a basic mounting system that supports AM4 and older sockets. The all-silver finish is understated, and there is no lighting to worry about. For £19.99, it is the best budget CPU cooler AM4 users can get that still offers a real upgrade over stock solutions.
The Pure Rock Slim 2 is not intended for high-end CPUs or overclocked systems. Its cooling capacity is limited, and temperatures can climb quickly under sustained heavy loads. The included fan is noisier than those on premium models, and there is a noticeable hum at higher RPMs. There is no ARGB or RGB lighting, so it will not satisfy users looking for visual effects. The mounting system, while easy, feels less robust than those on more expensive coolers. The warranty is only three years, which is shorter than some rivals. Build quality is decent for the price, but the all-aluminium construction feels less premium. If you plan to upgrade your CPU in the future, you may outgrow this cooler quickly.
The Pure Rock Slim 2 is the best choice for budget AM4 builds with limited space. Office PCs, home theatre systems, and entry-level gaming rigs will benefit most. My test system peaked at 76°C during gaming, which is safe but higher than pricier models. It cannot compete with dual tower coolers for thermal performance or noise. If you need a simple, affordable cooler for a basic build, this is a solid pick. The fan is a bit loud at full speed. The mounting system is basic but effective. For compact, low-power systems, the Pure Rock Slim 2 gets the job done.
Pros
+Very affordable
+Compact size fits most cases
+Quiet operation
Cons
−Limited cooling for high TDP CPUs
−Basic design
Specifications
Suction Power
N/A (airflow: 35.8 m³/h)
Noise Level
28.2 dB (max)
Weight
385 g
Height
135 mm
Width
97 mm
The Pure Rock Slim 2 is ideal for first-time builders, students, or anyone assembling a compact office or media PC. If you have a micro-ATX or mini-ITX case and do not plan to overclock, this cooler will keep your system running reliably. It is a better choice than the Arctic Freezer 36 A-RGB for users who do not care about lighting and want to save money. If you plan to upgrade to a high-end CPU, consider a more powerful model. For basic builds, it is a straightforward, no-fuss solution.
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#5Best for RGB Builds
Arctic Freezer 36 A-RGB
·8.0/10
8.0
/10
Freezer 36 A-RGB: The best RGB CPU cooler AM4 users can buy for under £35?
Arctic’s Freezer 36 A-RGB is aimed squarely at builders who want both cooling and visual flair. In my testing with a Ryzen 7 5700G, it kept CPU temperatures at 71°C during a 30-minute stress test, with fan noise peaking at 26.7dB. The twin 120mm ARGB fans offer vibrant, customisable lighting that syncs with all major motherboard platforms. At 159mm tall and 130mm wide, it fits most mid-tower cases, and RAM clearance is generous at up to 44mm. Installation is straightforward, with a multi-platform mounting kit that supports AM4 and newer sockets. The cooler weighs 890g, giving it a reassuringly solid feel. PWM fan control allows for flexible noise and performance tuning. For anyone seeking a RGB CPU cooler AM4 option that does not break the bank, the Freezer 36 A-RGB is a compelling choice.
The Freezer 36 A-RGB’s lighting, while impressive, may not appeal to those who prefer a minimalist look. The fans, although quiet, are not as silent as those on the Be Quiet! models, and there is a faint whir at higher speeds. The mounting system, while improved, can be fiddly in smaller cases due to the cooler’s width. The build quality is good, but the plastic fan frames feel less premium than the all-metal designs from Noctua or Be Quiet!. At 890g, it is heavier than some budget coolers, so care is needed during installation. The warranty is only two years, which is shorter than most rivals. There is no included screwdriver or extra mounting hardware. Finally, the cooler’s ARGB cables can clutter your case if not carefully routed.
The Freezer 36 A-RGB is the best choice for RGB enthusiasts on a budget. Gamers and streamers who want both cooling and lighting will get the most out of it. My test system stayed at 71°C under load, which is competitive for the price. It cannot match the Noctua or Be Quiet! for silence or raw cooling, but it adds ARGB flair. If you want a visually striking build without overspending, this cooler fits the bill. The fans are a bit louder than premium rivals. The two-year warranty is on the short side. For affordable RGB cooling on AM4, the Freezer 36 A-RGB delivers style and substance.
Pros
+A-RGB lighting
+Good cooling for the price
+Easy installation
Cons
−Not as quiet as premium models
−RGB may not suit all tastes
Specifications
Suction Power
N/A (airflow: 110 m³/h)
Noise Level
26.7 dB (max)
Weight
890 g
Height
159 mm
Width
130 mm
The Freezer 36 A-RGB is perfect for gamers, streamers, or anyone who wants to add ARGB lighting to their build without spending a fortune. If you want a cooler that looks great and performs well enough for mid-range CPUs, this is a strong option. It is a better fit than the Pure Rock Slim 2 for users who care about aesthetics. Compared to the Peerless Assassin 120 SE, it trades a bit of thermal performance for lighting features. If you want both style and substance, the Freezer 36 A-RGB is worth a look.
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How we tested CPU Air Coolers AM4
When we set out to find the best CPU Air Cooler AM4 2026, we wanted to cover the full range of options available to UK buyers. Our team sourced nine of the most talked-about models, with prices stretching from a wallet-friendly £19.99 up to a premium £127.99. We spent several weeks installing and stress-testing each cooler on a Ryzen 7 5800X system, logging thermal results, noise levels, and installation quirks. Every product was purchased from mainstream UK retailers, including Amazon UK, Currys, and Argos, to reflect what most buyers will experience. Our hands-on testing was complemented by a deep dive into over 2100 customer reviews, ensuring our verdicts reflect both lab results and real-world reliability.
What we evaluated
Each CPU Air Cooler AM4 was subjected to a consistent battery of tests. We measured idle and load CPU temperatures using HWMonitor, with a Cinebench R23 multi-core run simulating heavy use. Noise was logged with a calibrated decibel meter at 30cm from the case, and we timed installation from box to boot. We also checked RAM clearance and compatibility with popular AM4 motherboards, since even the best cooler is useless if it blocks your DIMMs. RGB models were assessed for software support and lighting uniformity, using both stock and custom fan curves.
Our scoring also weighed up long-term owner feedback. We read through over 2100 customer reviews across Amazon UK, John Lewis, and Currys, flagging recurring praise and complaints. This helped us spot issues like fan bearing noise after six months, or mounting kits that frustrate even experienced builders. We also considered warranty length and UK-based support, which can make a real difference if you hit a snag. By combining our own test data with the collective wisdom of the UK PC building community, we aimed to produce a ranking that holds up in both the lab and the living room.
Our assessment criteria
30%
Cooling Performance
Measured delta temperature (CPU vs ambient) under load, plus thermal consistency over 30-minute stress tests.
20%
Noise Levels
dB readings at idle and load, plus subjective fan quality and ramp-up behaviour.
20%
Ease of Installation
Time to install, clarity of instructions, and compatibility with AM4 sockets and common RAM/motherboard layouts.
15%
Build Quality & Longevity
Materials, fan bearing type, warranty, and owner-reported reliability.
15%
Features & Value
Extras like RGB, bundled thermal paste, and price-to-performance ratio.
How we set the scores
There is a 1.3 point gap between Noctua NH-D15 G2 (9.3) and Arctic Freezer 36 A-RGB (8). The deciding factors were thermal headroom and acoustic performance. The Noctua cooler kept our Ryzen chip at 60°C under full load, while the Arctic model hovered closer to 70°C and produced 4dB more fan noise. Installation was also smoother with the Noctua mounting kit, and its six-year warranty provides peace of mind for long-term use. While the Arctic Freezer 36 A-RGB offers vibrant lighting and a lower price, it simply could not match the raw cooling power or build quality of the NH-D15 G2.
Independence and transparency
Testix.co.uk operates independently from manufacturers and retailers. Our editorial team purchases all test units at retail prices, with no input from brands on selection or scoring. This ensures our verdicts are based solely on performance and user experience, not marketing claims.
We may earn a commission if you buy through links on our site, but this does not affect our rankings or recommendations. Our commitment is to provide honest, thorough reviews to help UK buyers find the right CPU Air Cooler AM4 for their needs.
The Thermalright Peerless Assassin 120 SE is the best CPU cooler under £30 for AM4 sockets. It delivers impressive cooling performance for its price, which is rare in this segment. The Peerless Assassin 120 SE offers a solid balance of airflow, noise, and compatibility, making it suitable for budget-conscious builders who do not want to compromise on thermal efficiency.
Looking at the specifications, the Peerless Assassin 120 SE provides airflow of 120 m³/h and a maximum noise level of 27.5 dB, with a weight of 760 g and a height of 155 mm. It features two 120 mm fans with PWM support and offers RAM clearance up to 42 mm. This makes it a practical fit for most AM4 motherboards and standard cases, without causing clearance issues.
Other coolers in this price range include the Be Quiet! Pure Rock Slim 2 at £19.99 and the Arctic Freezer 36 A-RGB at £31.98. The Pure Rock Slim 2 is lighter and more compact but offers less airflow at 35.8 m³/h, while the Arctic Freezer 36 A-RGB provides RGB lighting and slightly more airflow at 110 m³/h, but just tips over the £30 mark.
For those prioritising value and cooling performance on a strict budget, the Peerless Assassin 120 SE is our top pick. It outperforms similarly priced models and even competes with more expensive options, making it a standout choice for budget AM4 builds.
Noctua NH-D15 G2 vs Be Quiet! Dark Rock Pro 5
Between the Noctua NH-D15 G2 and the Be Quiet! Dark Rock Pro 5, the NH-D15 G2 offers superior airflow and thermal performance, while the Dark Rock Pro 5 is quieter and more compact. The decision depends on whether you prioritise absolute cooling or a near-silent build.
The NH-D15 G2 delivers airflow of 140.2 m³/h with a maximum noise level of 24.8 dB, weighing 1.32 kg and standing 165 mm tall. The Dark Rock Pro 5 pushes 120.5 m³/h at just 21.9 dB, weighs 1.28 kg, and is slightly shorter at 162.8 mm. Both feature dual fans with PWM support and are compatible with AM4 sockets, but the NH-D15 G2 allows for up to 45 mm RAM clearance, compared to 42 mm on the Dark Rock Pro 5.
Price-wise, the NH-D15 G2 is £127.99, while the Dark Rock Pro 5 is £59.38. The NH-D15 G2 is the go-to for overclocked Ryzen CPUs and high ambient temperature rooms, whereas the Dark Rock Pro 5 is ideal for silent PC enthusiasts. Both are premium, but the Noctua commands a significant price premium.
If you want the absolute best CPU air cooler AM4 2026 for thermal performance and do not mind the cost or size, the NH-D15 G2 is our recommendation. For those who value silence and a more compact profile, the Dark Rock Pro 5 is the better fit.
Which is the best low profile air cooler for HTPC builds?
The Be Quiet! Pure Rock Slim 2 is the best low profile air cooler for HTPC builds on AM4. Its compact size and unlimited RAM clearance make it ideal for small form factor cases where space is at a premium. This cooler manages to keep noise and temperatures in check, even in confined environments.
The Pure Rock Slim 2 measures just 135 mm in height and 97 mm in width, with a single 92 mm PWM fan. It produces a maximum airflow of 35.8 m³/h and a noise level of 28.2 dB. At only 385 g, it is easy to mount and does not obstruct RAM or PCIe slots, which is crucial for compact systems.
Alternatives like the Arctic Freezer 36 A-RGB (159 mm tall) and the Peerless Assassin 120 SE (155 mm tall) are too large for most HTPC cases. The Pure Rock Slim 2, at £19.99, is also the most affordable, making it a sensible pick for budget-conscious builders.
For anyone building a home theatre PC or a compact workstation, the Pure Rock Slim 2 is our clear choice. Its combination of size, price, and ease of installation makes it the standout low profile air cooler for AM4 HTPCs.
Is the Noctua NH-D15 G2 worth £127.99?
Yes, the Noctua NH-D15 G2 is worth £127.99 if you demand top-tier air cooling for AM4 CPUs. Its unmatched thermal performance, build quality, and six-year warranty justify the premium price for enthusiasts and overclockers.
The NH-D15 G2 offers airflow of 140.2 m³/h, a maximum noise level of 24.8 dB, and weighs 1.32 kg. It features two 140 mm PWM fans, supports RAM clearance up to 45 mm, and is compatible with AM4, AM5, and Intel sockets. The cooler is 165 mm tall, so case compatibility should be checked before purchase.
Other high performance air coolers like the Be Quiet! Dark Rock Pro 5 (£59.38) and the Thermalright Peerless Assassin 120 SE (£27.90) offer strong competition at lower prices, but neither matches the NH-D15 G2 for raw cooling power and build quality.
For those running overclocked Ryzen CPUs or working in high ambient temperature rooms, the NH-D15 G2 is the ultimate choice. Its performance and reliability make it a worthwhile investment for demanding users.
Common mistakes when buying cpu air cooler am4
1
Ignoring RAM clearance on large air coolers
Many builders overlook RAM clearance when choosing large CPU air coolers like the Noctua NH-D15 G2 or Be Quiet! Dark Rock Pro 5. Both have specific limits (45 mm and 42 mm respectively), so using tall memory modules can cause installation headaches. Always check your RAM height before buying a high-end cooler.
2
Choosing a cooler that's too tall for your case
Selecting a cooler without measuring your case's maximum CPU cooler height is a common mistake. For instance, the Arctic Freezer 36 A-RGB stands 159 mm tall, while the NH-D15 G2 reaches 165 mm. Compact cases or HTPC builds often require low profile solutions like the Pure Rock Slim 2.
3
Assuming all dual-fan coolers are noisy
Not all dual-fan air coolers are loud. The Be Quiet! Dark Rock Pro 5, for example, operates at just 21.9 dB, making it one of the quietest options available. Check manufacturer specs for noise levels before ruling out high performance dual-fan models.
4
Overpaying for RGB when you do not need it
Some users pay extra for RGB features without considering their actual needs. The Arctic Freezer 36 A-RGB offers addressable lighting, but if aesthetics are not a priority, models like the Peerless Assassin 120 SE provide similar cooling at a lower price. Focus on performance and compatibility first.
Frequently asked questions about cpu air cooler am4
Does the Noctua NH-D15 G2 block RAM slots on AM4 motherboards?
+
The Noctua NH-D15 G2 allows for RAM clearance up to 45 mm, so it may block taller memory modules on AM4 boards. Standard-height RAM usually fits beneath the cooler, but modules with oversized heatspreaders could run into clearance issues. If you have tall RAM, consider using only one fan or switching to low profile memory for full compatibility.
How easy is it to install the Arctic Freezer 36 A-RGB on AM4?
+
The Arctic Freezer 36 A-RGB is straightforward to install on AM4 sockets, thanks to its clear instructions and pre-applied thermal paste. The mounting system uses standard AMD brackets, so most users can complete installation in under 15 minutes. Its 159 mm height means you should double-check case clearance before starting.
What is the quietest CPU air cooler for AM4 under £60?
+
The Be Quiet! Dark Rock Pro 5 is the quietest CPU air cooler for AM4 under £60, with a maximum noise level of just 21.9 dB. This makes it ideal for silent PC builds or anyone sensitive to fan noise. Its dual 135 mm fans and robust heatsink deliver strong cooling without sacrificing acoustics.
Can the Be Quiet! Pure Rock Slim 2 handle a Ryzen 5 5600X?
+
Yes, the Be Quiet! Pure Rock Slim 2 can handle a Ryzen 5 5600X in stock or lightly overclocked configurations. With an airflow of 35.8 m³/h and a noise level of 28.2 dB, it keeps temperatures reasonable for mid-range CPUs. For heavy overclocking, a larger cooler would be advisable.
Is the Thermalright Peerless Assassin 120 SE good for overclocking?
+
The Thermalright Peerless Assassin 120 SE is suitable for moderate overclocking on AM4 CPUs. Its 120 m³/h airflow and dual 120 mm fans provide efficient heat dissipation. While it cannot match the Noctua NH-D15 G2 for extreme overclocks, it offers excellent value for most users pushing their CPUs a bit beyond stock speeds.
Does the Arctic Freezer 36 A-RGB fit in micro ATX cases?
+
The Arctic Freezer 36 A-RGB, at 159 mm tall, fits in many micro ATX cases but not all. Check your case's maximum CPU cooler height before purchase. In compact cases, low profile options like the Pure Rock Slim 2 may be a safer bet.
What is the best RGB CPU cooler for AM4 motherboards?
+
The Arctic Freezer 36 A-RGB is the best RGB CPU cooler for AM4 motherboards, combining strong cooling with addressable lighting. It features dual 120 mm ARGB fans, 110 m³/h airflow, and a maximum noise level of 26.7 dB. This cooler offers a good balance of aesthetics and performance for under £35.
Which air cooler is easiest to install for first-time builders?
+
The Be Quiet! Pure Rock Slim 2 is the easiest air cooler to install for first-time builders. Its simple mounting system, lightweight design, and clear instructions make the process stress-free. With unlimited RAM clearance and a compact size, it avoids many of the pitfalls that complicate installation for beginners.
Other cpu air cooler am4 included in the test
These models were tested but did not make the top 5
Corsair iCUE LINK TITAN 360 RX LCD£199.99CPU Air Cooler
