Thermalright Peerless Assassin 140 SE ARGB CPU Air Cooler with 6 Heat Pipes, 28mm Thick Performance GradeFan, 158mm High CPU Cooling

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What to look for:
  • TDP rating must exceed your CPU's TDP
  • Socket compatibility (AM5, LGA1851, etc.)
  • Fits within your case's cooler height limit
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ProductTypeTDP RatingAirflowNoiseValuePrice
Peerless Assassin 140 SE ARGB CPU Air Cooler with 6 Heat Pipes, 28mm Thick Performance GradeFan, 158mm High CPU Cooling CPUCooler
Peerless Assassin 140 SE ARGB CPU Air Cooler with 6 Heat Pipes, 28mm Thick Performance GradeFan, 158mm High CPU Cooling
Thermalright★★★★★4.7Sold by Thermalright Direct 2 via Amazon
Air
265W
75.0 CFM
25.6dBA
Quiet room
A
$42.90
Specifications
TypeAir
Socket SupportAM5,AM4,LGA1851,LGA1700,LGA1200
Height160mm
Radiator140
Fan Size140mm
Fans Included2 fans
Airflow75.0 CFM
Noise25.6dBA Quiet room
TDP Rating265W
RGBNo
CompatibilityDesktop
UPC739538428634
PERFORMANCE
59%
Customer Reviews★★★★★4.8 · 5 reviews
★★★★★Not a pc builder but easy to do following the instructions.
Worked great, anyone who has installed something in a case knows it can be cramped so either take the motherboard out of of you have a smaller case ply the fans in first after taking a look at what room you have. It looked like surgery to plug mine in after everything was installed. The only issue was the included thermal paste was very thick, hard to squeeze but at least it won’t run everywhere. So far it cools my i9 just fine, it’s quiet, and the installation wasn’t hard except for the fan plugs. It was in my opinion a good deal for the air cooled option.
Ben · 2026-05-05 · via amazon
★★★★★goat
this plus thermalright contact frame is peak
huna · 2026-05-03 · via amazon
★★★★★Great Air cooler for Ryzen 9000 series cpus
Great Air cooling product keeps my 9600x at 5.6ghz bellow 80. The 140 does not seem to perform better than the 120 version so it just looks bigger and the fan above memory will stick up higher toward the door on most boards. But there is more cooling surface area. So 1 thumb up.
GZ · 2026-02-25 · via amazon
★★★★★I does its job
Ive used aios and this keeps my 9800x3d running around 43c idol and 50c under heavy load and the fact that the front fan is actually a 120 helps clear the ram in my b650 eagle motherboard.
JaLee Bres · 2026-03-09 · via amazon
★★★★★Unbeatable!
Cools Ryzen 7 and 9 chips even better than my Noctua did, at about one fifth of the price! Very well-built cooler tower, fans are pretty quiet and powerful. Can't go wrong with this one!
Nick M. · 2026-02-28 · via amazon
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AmazonUNCONFIRMED 19d
✓ In Stock
Sold by Thermalright Direct 2 via Amazon
$42.90
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VALUE SCORE
A
24.8
Great value
Performance (59%) ÷ Price ($42.90) = 24.8
S ≥28 · A ≥20 · B ≥14 · C ≥8 · D <8
Peerless Assassin 140 SE ARGB CPU Air Cooler with 6 Heat Pipes, 28mm Thick Performance GradeFan, 158mm High CPU Cooling CPUCooler
CONSIDER INSTEAD
SAVE $9112% of this product's perf
Peerless Assassin 120 Mini Black CPU Air Cooler, 6 Heat Pipes,120mm CPU Fan
Price
$33.9
$33.9
+28% FASTERfor $7.090000000000003 more
Skeleton 360 ARGB Liquid CPU Cooler, 360mm Radiator, High-Performance Pump
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