Dynatron L25-U 1U liquid cooler Intel AMD 253 W
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).
New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.
Specifications
| Product | |
|---|---|
| Brand name | Alphacool |
| Part number | L25-U |
| Performance | |
| Pump rotation speed | 18,000 rpm |
| Fan speed | 18,000 rpm |
| Display | |
| Display type | Dynatron |
| Ports & slots | |
| Fan plug type | 4 Pin |
| Size & build | |
| Block dimensions | 15 L x 12 W x 2 H inches |
| Pump dimensions | 15 L x 12 W x 2 H inches |
| Fan dimensions | 15 L x 12 W x 2 H inches |
| Compatibility | |
| Compatible sockets | AMD Socket AM5 |
| Environment & compliance | |
| Pump noise level | 57 decibels |
| Fan noise level | 57 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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