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Dynatron

Dynatron L25-U 1U liquid cooler Intel AMD 253 W

SKU CH-1J0B-F6PQX

A 1U liquid cooler supporting Intel sockets up to 253 W and AMD AM5, with pump and fan at 18000 rpm and 57 decibels

  • Compatible socketsAMD Socket AM5
  • Block dimensions15 L x 12 W x 2 H inches
  • Display typeDynatron
  • Pump rotation speed18,000 rpm
  • Pump dimensions15 L x 12 W x 2 H inches
  • Pump noise level57 decibels
  • Fits 1U server racks for dense deployments
  • Cools Intel CPUs up to 253 W TDP
  • Supports LGA1851, LGA1700, LGA1200, LGA115X sockets
  • Compatible with AMD AM5 and AM4 platforms
  • Pump and fan run at 18000 rpm with 57 decibels noise

1U liquid cooler for dense servers

The Dynatron L25-U is a 1U liquid cooler designed for Intel and AMD server sockets. It targets data centres and high-performance computing clusters where rack height is restricted to a single unit. The cooler delivers up to 253 W of thermal capacity for mission-critical workloads. Its compact form factor fits dense server deployments without sacrificing cooling performance.

Suits 1U racks needing 253 W cooling

This cooler suits administrators deploying Intel LGA1851, LGA1700, LGA1200, LGA115X, LGA2011 or LGA2066 processors and AMD AM5 or AM4 CPUs in 1U chassis. It is not for builders requiring larger radiator surface area or lower acoustic output than 57 decibels. Buyers needing support for sockets outside the listed Intel and AMD families should look elsewhere. The fixed 1U height also rules out installations that demand taller cooling assemblies.

Handles 253 W at 57 decibels

The pump and fan both spin at 18000 rpm to move heat from the cold plate through the 1U radiator. This configuration comfortably handles sustained 253 W loads typical of modern server processors. Headroom diminishes when ambient temperatures rise above specification or when airflow through the chassis is restricted. The 57 decibel noise level marks the practical limit for noise-sensitive rack rows.

How it compares

Measured against everything we stock in Liquid Cooling & AIO Coolers, at today’s prices. Recalculated every night.

Price $107.99
Pricier than about 67% of the 1,190 comparable items (median $71.99).

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Specifications

Product
Brand nameAlphacool
Part numberL25-U
Performance
Pump rotation speed18,000 rpm
Fan speed18,000 rpm
Display
Display typeDynatron
Ports & slots
Fan plug type4 Pin
Size & build
Block dimensions15 L x 12 W x 2 H inches
Pump dimensions15 L x 12 W x 2 H inches
Fan dimensions15 L x 12 W x 2 H inches
Compatibility
Compatible socketsAMD Socket AM5
Environment & compliance
Pump noise level57 decibels
Fan noise level57 decibels
More details
Reservoir dim.15 L x 12 W x 2 H inches

Questions about this item

Which Intel or AMD socket on my motherboard must match the L25-U block compatibility list?

The cooler supports Intel LGA1851, LGA1700, LGA1200, LGA115X, LGA2011, LGA2066 and AMD AM4, AM5, FM2+, FM2, AM2, AM2+, AM3, AM3+, FM1 sockets.

Will the 4-pin fan connector on the L25-U work with a motherboard that only has 3-pin headers?

Yes, the 4-pin PWM connector fits a 3-pin header and will run at full speed, though PWM control is lost.

How can I confirm the pump and fan are running at the rated 18000 rpm after installation?

Monitor the pump and fan RPM in BIOS or hardware-monitoring software; both should report approximately 18000 rpm under load.

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