Head-to-head · Best Air Coolers Under $100

Deepcool AK620 vs Noctua NH-L9i

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Deepcool AK620 comes out ahead by a narrow margin (4.5 vs 4.3). The gap is mostly about budget-conscious builders seeking metrics display — read the strengths below before deciding.

Higher ratedRanked #4 in Best Air Coolers Under $100

Deepcool AK620

4.5

$69

The DeepCool AK620 G2 Digital NYX delivers solid cooling performance for mid-range CPUs, effectively managing high TDP processors like the Intel Core i5 12600KF when overclocked to 5GHz. TechPowerUp and Tom's Hardware reviewers praised its dual tower design with 6 heat pipes and improved powder-coated finish. The digital display provides comprehensive system metrics, though some users noted the fan noise levels during intensive use. While it offers good value, Reddit users in r/buildapc reported mixed experiences with the display's information hierarchy. This cooler is ideal for budget-conscious builders seeking reliable performance, but those prioritizing silence may want to consider alternatives.

Strengths

— Effective cooling performance handling Intel Core i5 12600KF overclocked to 5GHz with maximum temps around 96°C
— Dual tower design with 6 heat pipes and sawtooth aluminum fins for efficient heat dissipation
— Digital display shows CPU temperature, usage, power, and frequency with customizable DeepCreative UI

Watch-outs

— Fan noise reaches 41-43dB during aggressive cooling and overclocking scenarios
— Display shows CPU speed, usage, power and temperature but application shows fan speed instead
— Includes only basic mounting accessories without rubber sleeves like newer models

$69 · Buy at ebay.com Full review →

Ranked #3 in Best Air Coolers Under $100

Noctua NH-L9i

4.3

$69

The Noctua NH-L9i chromax.black delivers excellent build quality and a stealthy all-black aesthetic for ITX and HTPC builds. PCMag's Joel Hruska praised its silent operation and compact footprint, while Tech4Gamers reviewer Awais Khan gave it 8/10 overall, noting it's ideal for casual users and smaller setups. However, reviewers consistently note it's not designed for extreme overclocking or high-TDP applications, with Tech4Gamers rating its performance at 7/10. This cooler fits best in compact systems where space and aesthetics matter more than raw cooling performance.

Strengths

— 100% RAM and PCIe clearance for compact ITX builds
— Silent operation up to 65W TDP
— Compact design suitable for small form factor systems

Watch-outs

— Not recommended for overclocking or high-power workloads
— Performance rated at 7/10 in benchmarks

$69 · Check Price on Amazon Full review →

How they stack up

Deepcool AK620

The Deepcool AK620 offers a unique digital display feature that sets it apart from competitors like the Noctua NH-U12S redux and Scythe Fuma 2, but its fan noise levels exceed those of the Thermalright Peerless Assassin 120 and be quiet! Dark Rock Pro 5. It's more affordable than the Thermalright Phantom Spirit 120 EVO but lacks the advanced heat pipe technology and build quality of the premium models.

Noctua NH-L9i

The Noctua NH-L9i is uniquely designed for compact ITX builds, offering 100% RAM and PCIe clearance unlike the Thermalright Phantom Spirit 120 EVO and Scythe Fuma 2, but it's less effective than the Noctua NH-U12S redux and Cooler Master Hyper 212 Black Edition for high-TDP CPUs. It's more compact than the be quiet! Dark Rock Pro 5 but lacks the performance and features of the premium models.

Specs side-by-side

Spec	Deepcool AK620	Noctua NH-L9i
Cooler Type	Air Cooler	Low-profile air cooler
Fan Size	9-bladed with fluid dynamic bearing	1x 92mm Noctua NF-A9px1
Heat Pipes	6 x 6mm	2
TDP Rating	260W	65W
Noise Level	27.3 dBA	19.6 dBA
Height	165mm	37 mm
Interface	LGA1700, AM5, AM4, LGA1200, LGA115x, AM3/AM2+	LGA 115x, AM4, AM5
Compatibility	Intel LGA1700/1200/115x, AMD AM5/AM4/AM3/AM2+	ITX/HTPC builds

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