Original flagship dual-tower โ€” 157mm height, wider 135mm fin stack, 6 heatpipes, 220W TDP. Slightly bulkier than the SE but with more thermal mass.

The Thermalright Peerless Assassin 120 is the original flagship model โ€” slightly different from the SE variant. It uses a wider 135mm fin stack (vs 110mm on the SE), producing a bulkier profile that offers marginally better thermal mass but may reduce RAM clearance in tight builds. Both use 6 heatpipes and deliver excellent performance. Available in standard, ARGB, black, and white variants.

Full Specifications

Height

157mm

Dimensions

125 ร— 135 ร— 157mm

Heatpipes

6 ร— 6mm copper

TDP Rating

220W

Fans

2 ร— TL-C12B 120mm PWM

Weight

1020g (with fans)

PA120 vs PA120 SE โ€” Key Differences

Spec PA120 PA120 SE
Height 157mm 155mm
Fin width 135mm (wider) 110mm (narrower โ€” more RAM clearance)
TDP 220W 265W
Weight 1020g 730g

In most Singapore builds, the PA120 SE is the better choice โ€” narrower profile means better RAM clearance for tall DDR5 sticks, and the higher 265W TDP rating handles modern CPUs with more headroom.

Upgrading your CPU cooler?

BreakFixNow installs Thermalright coolers โ€” thermal paste included, 90-day warranty.

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