small-form-factor case · Dual-tower air cooler

Does the Thermalright Peerless Assassin 120 SE fit in the Lian Li A4-H2O?

No. 100 mm too tall for the Lian Li A4-H2O: The Thermalright Peerless Assassin 120 SE stands 155 mm; the A4-H2O allows 55 mm. The side panel will not close. Choose a cooler 100 mm shorter or a low-profile model.

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

Does not fit

100 mm too tall for the Lian Li A4-H2O

Cooler height
155 mm
Case limit
55 mm
Margin
-100 mm
GPU length limit
322 mm

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Coolers that do fit the A4-H2O

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Frequently asked questions

Does the Thermalright Peerless Assassin 120 SE fit in the Lian Li A4-H2O?

100 mm too tall for the Lian Li A4-H2O. The Thermalright Peerless Assassin 120 SE stands 155 mm; the A4-H2O allows 55 mm. The side panel will not close. Choose a cooler 100 mm shorter or a low-profile model.

What is the maximum CPU cooler height for the Lian Li A4-H2O?

55 mm from the motherboard to the side panel, per Lian Li's specification.

Which radiators does the Lian Li A4-H2O support?

Top up to 240 mm, front up to 0 mm, rear up to 0 mm.

Terms used on this page

CPU cooler height
The installed height of an air cooler from the motherboard, compared against the case's published CPU cooler clearance. Coolers at or above 160 mm exclude many compact Micro-ATX and tempered-glass mid-towers.
RAM clearance
The tallest memory module that fits under an air cooler's front fan in its stock position. Dual-tower coolers with less than 42 mm clash with tall RGB kits (typically 44 mm) unless the fan is raised.
Dual-tower air cooler
An air cooler with two fin stacks and a fan between them (often a second in front). Highest air-cooling capacity, but the front fan overhangs the DIMM slots, which is where RAM clearance limits come from.