This article covers Thermalright ピアレスアサシン 90 SE CPUクーラー.

Overview

The Thermalright Peerless Assassin 90 SE (PA90 SE) is a compact dual-tower CPU air cooler. With four 6mm heatpipes and a 90mm PWM fan, it stands just 110mm tall, making it an excellent fit for small form factor builds. The 4th-generation AGHP (Anti-Gravity Heat Pipe) technology ensures consistent cooling performance regardless of orientation. The cooler's compact design also avoids interfering with memory slots, even on boards with tall RAM heatsinks.

Connectivity & Compatibility

Socket support covers Intel LGA 1700/1851/1150/1151/1200 and AMD AM4/AM5. The 90mm fan uses a 4-pin PWM header for automatic speed control from the motherboard. At 110mm total height, the cooler fits into most Mini-ITX and Micro-ATX cases, but always check your case's maximum CPU cooler clearance. Memory clearance is generous – even tall RAM modules should fit without issue.

Product Info

The Peerless Assassin 90 SE targets entry-level to mid-range CPUs, offering effective cooling for processors like the Core i5 or Ryzen 5. Released in 2024, it builds on Thermalright's extensive air-cooling heritage. Priced around ¥15,000, it delivers dual-tower performance in a compact package. The all-aluminum fin stack sits on a CNC-machined copper base, with nickel-plated heatpipes for corrosion resistance. Availability is good through major online retailers and Thermalright's own store.

Best Use Cases

Small form factor builders: The 110mm height fits many ITX and small cases without sacrificing cooling capability. Users who value quiet operation: The S-FDB bearing fan keeps noise to 23.85 dBA even at 2200 RPM, making it suitable for silent PCs. * Budget-conscious builders: The PA90 SE delivers solid thermal performance at a competitive price, ideal for mainstream gaming or productivity rigs where a large tower cooler won't fit.

Product Disclosure (Amazon)

  • Manufacturer: THERMALRIGHT(サーマルライト)
  • Seller: いいものをお客様に
  • Fulfilled by: いいものをお客様に
  • ASIN: B0CZRZVMQ3
  • Note: This article covers a manufacturer-made product based on Amazon listing details.