CPU Cooler Check

Lian Li · 280 mm AIO liquid cooler

Galahad II LCD 280 CPU compatibility

Rated for 300 W sustained, it holds CPUs up to the Core i7-13700K (253 W) below their junction limit in our model, and keeps 120 of 120 processors in the Excellent band.

How to check CPU cooler compatibility walks through socket, boost power, RAM clearance and case fit before you match this cooler to a processor.

Reviewed by Farrukh Sufyan SarwarHow we estimate temperaturesPrices verified Model v1.2 · data updated

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Sustained rating
300 W
at acceptable noise
Radiator + fans
52 mm
top-mount depth
RAM clearance
Any
no DIMM overhang
Excellent on
120 / 120
processors with headroom
Handles up to
253 W
Core i7-13700K
Amazon price
$140
live, see time above
Sockets in the boxAM5AM4LGA1851LGA1700LGA1200

Design and fitment

The Lian Li Galahad II LCD 280 is a 280 mm aio liquid cooler rated for about 300 W of sustained heat at acceptable noise. Its radiator and fans stack to 52 mm, which matters for top-mount clearance above the motherboard VRM heatsinks; the pump block itself leaves the memory slots clear.

Mounting kits for AM4, AM5, LGA1200, LGA1700, LGA1851 are in the box. Every current desktop socket is covered.

Which processors it suits

The Lian Li Galahad II LCD 280 keeps 120 of the 120 processors it can mount (100 %) in the Excellent band and is a throttling risk on 0. The most power-hungry chip it holds comfortably is the Core i7-13700K at 253 W (estimated 86 °C under full load). No supported processor pushes it into the throttling band.

In practice that makes it a good match for flagship Core i9 and Ryzen 9 processors at stock power limits.

VS

Compared with close alternatives

01

AM5

bracket included
02

AM4

bracket included
03

LGA1851

bracket included
04

LGA1700

bracket included
05

LGA1200

bracket included

Terms used on this page

Sustained dissipation rating
The continuous heat load, in watts, a cooler can remove at acceptable noise. This site uses realistic sustained figures rather than marketing peak numbers, and models temperature as ambient plus load ÷ rating × a per-load scale.
Thermal headroom
The cooler's sustained dissipation rating minus the CPU's boost power limit, in watts. Positive headroom lets fans run slower and quieter; 25 W or more is rated Excellent here.
AIO liquid cooler
A sealed closed-loop liquid cooler with a pump block and a 120–420 mm radiator. Radiator length determines case compatibility; thickness plus fans determines top-mount clearance above the VRM heatsinks.
TjMax
The maximum junction temperature the maker allows, typically 95–100 °C. AMD lists 90 °C for the Ryzen 7 5800X3D, 89 °C for the 7800X3D and 95 °C for the 9800X3D. At TjMax the CPU throttles clocks to stay in place; it will not overheat, but it will lose performance.