Product Comparison: Noctua NH-L9x65 vs Noctua NH-L12S

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General Specifications
About the Product
The NH-L9x65 is a taller, performance-enhanced version of Noctua’s award-winning NH-L9 low-profile coolers. With 65 instead of 37mm height and four instead of two heatpipes, the NH-L9x65 is more powerful than its smaller siblings yet retains their 95x95mm footprint.
Successor to the popular NH-L12, the NH-L12S is a compact low-profile CPU cooler that combines excellent compatibility, surprising efficiency and remarkable flexibility. It suitable for use in many HTPC and Small Form Factor cases.
Key Specs
Cooling Type
Air Cooling
Air Cooling
Max. Airflow
33.84 CFM
55.35 CFM
Number of Pipes
What customers say about "Key Specs"
Noctua NH-L9x65 Premium Low-Profile CPU Cooler
  • The cooler does an amazing job cooling my i5-6600K CPU overclocked to 4.2 GHz, and is also pretty quiet.
  • Absolute quality and absolutely silent. I replaced a liquid-cooling system with this fan.
  • I run an overclocked i7 870 in my HTPC and this fan keeps it cool all day.
  • Very easy to install and great results. Used this to cool my ryzen 5 2600 and it keeps the CPU very cool.
  • This is very nice cooler! Great airflow.
Noctua NH-L12S Premium Low-Profile CPU Cooler
  • It is whisper quiet and keeps the CPU cool.
  • Fantastic cooler. Cools my i7 2700k overclocked to 4.5GHz.
  • Installed easily, things are running cool, real quiet.
  • Easy to install and works like a charm. Cools way better than a stock cooler.
  • Great product. Keeps my PC running cool!
Size & Weight
2.56 in.
2.76 in.
3.74 in.
5.04 in.
3.74 in.
5.75 in.
0.91 lbs.
1.16 lbs.
What customers say about "Size & Weight"
Noctua NH-L9x65 Premium Low-Profile CPU Cooler
  • Very easy to install. Fit in HTPC case just fine.
  • Low profile, very quiet, works awesome. Keeps my CPU very cool.
  • Does the job, fits my very small ITX case and keeps my new Ryzen gaming system cool.
  • Keeps everything super cool and quiet! And has great size.
  • Awesome cooler for the size and price. It cools amazing.
Noctua NH-L12S Premium Low-Profile CPU Cooler
  • I highly recommend this low-profile cooler for setups where you can't fit a massive 158-162mm cooler in your case.
  • Installed this in a small form factor PC case with an Intel I7-8700 CPU and keeps it fairly cool even under load for an SFF.
  • Excellent. This cooler will not occupy much space inside my PC tower and it is doing an excellent job in keeping my Intel i7-4700k CPU cool.
  • This is a great item. Not as bulky and hard to squeeze into smaller case as water cooled one. Nice and quiet also.
  • The install is super easy. Great performance for it size.
Socket Compatibility
Intel:, 1150, 1151, 1155, 1156, 1200, 2011, 2011-3, 2066, AMD:, AM3 +, AM3, AM2 +, AM2, FM2+, FM2, FM1
Intel:, 1150, 1151, 1155, 1156, 1200, 2011, 2011-3, 2066, AMD:, AM4, AM3 +, AM3, AM2 +, AM2, FM2+, FM2, FM1
2500 RPM
1850 RPM
Cooled CPU (Max. TDP)
140 W
160 W
Noise Level
23.6 dBA
23.9 dBA
Number of Coolers
Bearing Type
Heat-Exchanger Material
Power Connector Type
Low Profile Mode, 100% RAM compatibility, 100% compatibility with PCIe cards on ITX, Low-Noise Adaptor, SecuFirm2 mounting system
Low Profile Mode, High Clearance Mode, SecuFirm2 mounting system, Low-Noise Adaptor
What customers say about "Features"
Noctua NH-L9x65 Premium Low-Profile CPU Cooler
  • Installation was pretty straight forward, just be sure to follow the instructions carefully.
  • This unit is quiet and is keeping my I7-7700 cool.
  • Very quiet even without adapter. My 5 hard drives louder that this cooler.
  • The design is absolutely great. The fact that I can swap a fan in / out is perfect.
  • Very impressive cool and whisper quiet.
Noctua NH-L12S Premium Low-Profile CPU Cooler
  • Build quality, presentation and everything else just screams premium.
  • The build quality of the heat sink and fan are excellent.
  • The unit performs well, was easy to install, and is very quiet.
  • The installation was easy if you're on an Intel platform.
  • My major problem with it is it's extremely noisy.
Warranty / Certifications
Manufacturer Warranty
6 year(s)
6 year(s)
Other Information

Other reviews