ARCTIC Liquid Freezer III Pro 240 vs DeepCool AK400

Researched, not hands-on tested.How we review ›

all judged against CPU coolers at a similar price

The ARCTIC Liquid Freezer III Pro 240 scores 8.1/10 overall, ahead of the DeepCool AK400 at 7.1/10.

The ARCTIC Liquid Freezer III Pro 240 leads on cooling, noise, value and build and installation.

The DeepCool AK400 leads on compatibility and fit.

ARCTIC Liquid Freezer III Pro 240

8.1/10verdict: buy

The ARCTIC Liquid Freezer III Pro 240 is for builders who want strong cooling from a 240 mm all-in-one liquid cooler. It suits Intel LGA1851 and LGA1700 systems as well as AMD AM5 and AM4 builds. It is best for people who have checked their case can take a 38 mm thick radiator.

Typically about £59.99 in the UK when we researched itSearch Amazon UK

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DeepCool AK400

7.1/10verdict: good, not the best

The DeepCool AK400 is for builders who want a low-cost air cooler for a mainstream Intel or AMD desktop CPU. It suits anyone who wants current socket support, including LGA1851 and AM5, without paying for a bigger tower or an AIO. It is a sensible pick for mid-range builds, and less so for chips that draw well above its 220 W rating.

Typically about £20.50 in the UK when we researched itSearch Amazon UK

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Scores, criterion by criterion

Criterion	Weight	ARCTIC Liquid Freezer III Pro 240	DeepCool AK400
Cooling	35%	9/10	7/10
Noise	25%	7/10	6/10
Compatibility and fit	15%	7/10	8/10
Value	15%	9/10	8/10
Build and installation	10%	8/10	7/10
Overall		8.1/10	7.1/10

Specifications

Spec	ARCTIC Liquid Freezer III Pro 240	DeepCool AK400
Type (tower air cooler, low-profile air, or AIO liquid with radiator size)	AIO liquid, 240 mm radiator	Single-tower air cooler, four 6 mm copper heat pipes, one 120 mm fan
Supported sockets (e.g. AM5, AM4, LGA1851, LGA1700)	Intel LGA1851 and LGA1700; AMD AM5 and AM4	Intel LGA1851/1700/1200/1151/1150/1155; AMD AM5/AM4
Height in mm (air coolers) or radiator size in mm (AIO)	Radiator 277 × 120 × 38 mm (L × W × H)	155 mm total (L×W×H); heatsink 152 mm
Rated cooling capacity (W TDP)	not listed	Up to 220 W
Fans included and their size	2 × P12 Pro, 120 mm, 600–3000 rpm, 77 cfm, 6.9 mmH2O, fluid dynamic bearing, 4-pin PWM; pump 800–2800 rpm; VRM fan 400–2500 rpm	One 120×120×25 mm FDB fan, 500–1850 RPM ±10%, 4-pin PWM
Noise level (dBA)	not listed	≤29 dB(A) (manufacturer rating)
Warranty (years)	6 years	3 years (per Hwbusters spec list; not confirmed by DeepCool)

Strengths and weaknesses

ARCTIC Liquid Freezer III Pro 240

+ Tom's Hardware calls it the strongest AIO it has tested
+ Noise-normalised result ties for the best the reviewer has seen
+ Pre-applied MX-6 paste, pre-installed fans and a 6-year warranty
− Pump can be louder than some users prefer at full speed
− 38 mm radiator means checking case clearance first
− Some owners find noise only good, not exceptional

Skip it if:

Buyers whose case may not have room for a 38 mm thick radiator.
Anyone who wants a completely silent PC sitting close to their desk.
People who prefer an air cooler over any liquid-cooled setup.

Read the full ARCTIC Liquid Freezer III Pro 240 review ›

DeepCool AK400

+ Strong cooling for the money, per owners
+ Supports LGA1851, LGA1700, AM5 and AM4
+ Easy installation reported by owners
− Reported 8% throttling on an 11900K in the FPU test
− 42 dBA at full 1850 RPM in KitGuru's figures
− Mounting kit and pre-applied paste draw criticism

Skip it if:

Buyers with a hot, high-power CPU that sits near or above 220 W under sustained load
Anyone with a compact case that can't take a 155 mm cooler
Buyers who want quiet full-speed operation without setting a fan curve

Read the full DeepCool AK400 review ›

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