CPU coolers / Compare

Cooler Master V4 Alpha 3DHP Black vs DeepCool AK400 G2

A

Product A: Cooler Master

V4 Alpha 3DHP Black

33 of 54 known

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B

Product B: DeepCool

AK400 G2

29 of 54 known

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Every value links to where we found it.

Only differences

ACooler Master V4 Alpha 3DHP Black

BDeepCool AK400 G2

General

7 of 12 differ

Series

V1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Specification table: Series V.

AK G25Press releaseglobal.deepcool.com/company/pressroom/newsrelease/2025/22352.shtmlRead 15 October 2026The release names the family AK G2 with 4, 5 and 6 heat pipe models.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

MAZ-T2HP-217PK-R11Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Specification table: Product Number MAZ-T2HP-217PK-R1. The Hyper 212 3DHP versions (MAY-T2HP-217PK-R1 and MAY-T2HP-217PA-R1) are separate products with one fan.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/kvkDKG7vf3yCRead 14 October 202610Retailer pageaquatuning.com/en/detail/index/sArticle/23874Read 14 October 2026Manufacturer no. MAZ-T2HP-217PK-R1.

R-AK400G2-BKNNMN-GJD, R-AK400G2-WHNNMN-GJD1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Black: P/N R-AK400G2-BKNNMN-GJD. The white page 21909 gives R-AK400G2-WHNNMN-GJD. The AK400 G2 DIGITAL NYX is a separate model with its own page and is not this product.2Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-WH-Wood-Grain-Top-Cover-CPU-Cooler/2025/21909.shtmlRead 15 October 2026White: P/N R-AK400G2-WHNNMN-GJD.

GTIN / EAN

4719512158838, 8841021311582Maker spec sheet (PDF)coolermaster.egnyte.com/dl/kvkDKG7vf3yCRead 14 October 2026Shipping details: EAN Code 4719512158838 and UPC Code 884102131158. Net weight and gross weight are listed as TBD.10Retailer pageaquatuning.com/en/detail/index/sArticle/23874Read 14 October 2026EAN 4719512158838. The listed weight of 1.5 kg is not stored because it is probably a shipping weight and conflicts with 917 g from Cybenetics and Hardware Busters.

6933412729655, 69334127296621Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Black EAN 6933412729655. The white page gives EAN 6933412729662.2Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-WH-Wood-Grain-Top-Cover-CPU-Cooler/2025/21909.shtmlRead 15 October 2026White EAN 6933412729662.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

20 October 20255Reviewhwbusters.com/cooling/cooler-master-v4-alpha-3dhp-black-hyper-212-3dhp-black-argb-review-less-is-moreRead 14 October 2026The same day as the launch press release of 20 October 2025, which Business Wire lists. The Business Wire page itself returned 403 to the agent.9Press articleswemod.com/article/20251024_cooler-master-v4-alpha-black-3dhp/1Read 14 October 2026Swedish site copy of the Cooler Master launch press release, dated 24 October 2025 in its address. The release text announces the V4 Alpha 3DHP Black and the Hyper 212 3DHP Black.

4 November 20255Press releaseglobal.deepcool.com/company/pressroom/newsrelease/2025/22352.shtmlRead 15 October 2026Press release dated November 4, 2025 for the AK G2 series.6Press articlekitguru.net/components/cooling/matthew-wilson/deepcool-debuts-2nd-gen-ak-and-ak-digital-cpu-coolersRead 15 October 2026Article of November 4, 2025.

Status

Available10Retailer pageaquatuning.com/en/detail/index/sArticle/23874Read 14 October 2026Listed as in stock with delivery in 1 to 3 business days on the access date.

Available11Retailer pagearvutitark.ee/en/pc-components/coolers/protsessori-jahutid/k-cooler-deepcool-ak400-g2-1511621Read 15 October 2026Arvutitark (Estonia) lists the black model at 37.90 EUR with 47 pieces available to order on the access date. DeepCool's page is live and Tom's Hardware says the coolers are not easy to buy in the US.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$39.996Reviewenostech.com/cooler-master-v4-alpha-3dhp-coolerRead 14 October 2026The review says the cooler comes in at USD 39.99, GBP 32.99 and PKR 14000. Tom's Hardware lists a $49.99 MSRP in July 2026, so the US list price rose after launch. The launch figure is stored. The review does not say whether the US price excludes tax, as is usual for a US MSRP.

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

€39.996Press articlekitguru.net/components/cooling/matthew-wilson/deepcool-debuts-2nd-gen-ak-and-ak-digital-cpu-coolersRead 15 October 2026The standard edition AK G2 models in black and white are priced at EUR 39.99 for the AK400 G2. Funkykit reports the same EUR 39.99 for the AK400 G2 (WH). The price includes VAT and the report names no country. The DeepCool release gives no prices.7Press articlefunkykit.com/news/deepcool-also-introduces-new-ak-g2-cpu-air-coolersRead 15 October 2026MSRP AK400 G2 (WH) EUR 39.99.

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

Not available

ColoursiThe maker's own colour names

Black1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Exterior Color: Black. No white version was found.

Black, White1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Black on this page. White on the AK400 G2 WH page 21909 with identical specs.2Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-WH-Wood-Grain-Top-Cover-CPU-Cooler/2025/21909.shtmlRead 15 October 2026White edition with the same technical spec table.9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026Black or white, with woodgrain or digital display options. The review says the AK400 G2 does not overhang the DIMM slots, so all RAM heights fit. Retailers print 40 mm or 60 mm RAM clearance and conflict, so no clearance is stored.

Cooler typeiAir is a heatsink with fans that sits on the CPU. AIO liquid is a sealed all-in-one liquid cooler with a pump block, tubes and a radiator.

Air1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026

Air1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Air cooler with one 120 mm fan.

Air cooler layoutiAir coolers only. Top-flow covers low-profile coolers whose fan blows down onto the board.

Single tower5Reviewhwbusters.com/cooling/cooler-master-v4-alpha-3dhp-black-hyper-212-3dhp-black-argb-review-less-is-moreRead 14 October 2026The V4 Alpha uses the same single-tower heatsink as the Hyper 212 3DHP, with a second fan.6Reviewenostech.com/cooler-master-v4-alpha-3dhp-coolerRead 14 October 2026A single tower with 51 fins and two heat pipes.9Press articleswemod.com/article/20251024_cooler-master-v4-alpha-black-3dhp/1Read 14 October 2026Quote from the General Manager: all in single-tower builds.

Single tower1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Text: a single-tower heat sink with four heat pipes.9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026Single-tower AK400 G2.

Rated TDP (claimed)iThe heat load the maker says the cooler handles. Makers do not share one test method, so this is not a measured result. A maker's maximum heat dissipation power counts. Check the maker's CPU compatibility page too.

Not available

240W3Maker product pagedeepcool.com/ProductCompatibilityS_New/Default.aspxRead 15 October 2026Thermal Design Power (TDP) and CPU Socket Compatibility List: AK400 G2 240 W, and the same for AK400 G2 WH.

Base materialiThe surface that touches the CPU: the heatsink base or the AIO cold plate. Plating counts, so nickel-plated copper is not copper. Direct-touch heat pipes are the contact surface, so they count as copper unless plating is stated. The direct-contact heat pipes field records the design.

Copper1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Text: the solid copper base covers more surface area than four-pipe coolers with direct contact. The page does not name any plating.4Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026Technical specifications: Block Material Copper.5Reviewhwbusters.com/cooling/cooler-master-v4-alpha-3dhp-black-hyper-212-3dhp-black-argb-review-less-is-moreRead 14 October 2026Technical specifications: Base Material Copper.9Press articleswemod.com/article/20251024_cooler-master-v4-alpha-black-3dhp/1Read 14 October 2026Precision-machined expanded copper contact plate. Heat pipes make contact with the CPU over a copper base.

Copper1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Text: four direct touch copper heat pipes. The page names no base plate or plating, so the contact surface is stored as copper.

Thermal pasteiPre-applied means paste is already on the base or cold plate. Included means a separate tube or syringe in the box.

Included1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Cryofuze thermal paste is included. A tube is in the manual's package content list.3Owner's manualcoolermaster.egnyte.com/dl/sMg7tw0XrPRead 14 October 2026Package content F: a syringe of thermal paste x1.9Press articleswemod.com/article/20251024_cooler-master-v4-alpha-black-3dhp/1Read 14 October 2026Cryofuze thermal paste is included.

Pre-applied9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026Package list: the AK400 G2 includes pre-installed thermal paste, while the AK620 G2 includes a tube.

Compatibility

2 of 3 differ

CPU socketsiSockets the maker lists as supported in its spec table, compatibility list or guide, written as cpu_socket writes them, e.g. AM5 or LGA1851. List each socket on its own, so LGA115x becomes LGA1150, LGA1151, LGA1155 and LGA1156. When the maker names the sockets of such a family, list only the ones it names. A socket that needs a separately sold or requested mounting kit is left out. A new socket that the maker lists with no extra kit counts. LGA2011-v3 and 2011(V3) are written LGA2011-3. Threadripper sockets use AMD's names, so TR4 is written sTR4 and TR5 is written sTR5. sTRX4 and sWRX8 are sockets of their own.

AM5, AM4, LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151, LGA11501Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Intel LGA 1851 / 1700 / 1200 / 1151 / 1150 / 1155 / 1156 and AMD AM5 / AM4. No new socket and no extra kit are listed.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/kvkDKG7vf3yCRead 14 October 20263Owner's manualcoolermaster.egnyte.com/dl/sMg7tw0XrPRead 14 October 2026Pages 4 to 10: Intel LGA 1851/1700/1200/115X with parts B, C and E, and AMD AM5/AM4 with parts D and E.7Reviewtomshardware.com/pc-components/air-cooling/cooler-master-v4-and-v8-3dhp-reviewRead 14 October 2026Socket compatibility: AMD AM5/AM4 and Intel 1700/1851/1200/115x.

AM5, AM4, LGA1851, LGA1700, LGA1200, LGA1155, LGA1151, LGA11501Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Application for Intel LGA1851/1700/1200/115X and AMD AM5/AM4. The manual names LGA1200, LGA1151, LGA1150 and LGA1155 for the 115X family, so LGA1156 is not stored.3Maker product pagedeepcool.com/ProductCompatibilityS_New/Default.aspxRead 15 October 2026The row marks LGA1851, LGA1700, LGA1200, LGA115X and AM5, AM4 and no LGA20XX or Threadripper sockets.4Owner's manualdeepcool.com/download/pdf/AK400_G2_Series.pdfRead 15 October 2026Installation chapters: Intel LGA1851/1700, Intel LGA1200/1151/1150/1155 and AMD AM5/AM4.9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026Spec table: AMD AM5/AM4 and Intel 1700/1851/1200/115x.11Retailer pagearvutitark.ee/en/pc-components/coolers/protsessori-jahutid/k-cooler-deepcool-ak400-g2-1511621Read 15 October 2026Sockets supported: 1150, 1151, 1155, 1200, 1700, 1851, AM4, AM5.

RAM height clearanceiAir coolers only. The tallest memory module that fits under the cooler with all included fans in their standard position. When the maker gives different values per socket, store the lowest and name the others in the source note. A heatsink that does not reach over the memory slots has no height limit, so the field is left out and the maker's statement goes in the source note.

Not available

Not available

Offset mountingiThe included mount can shift the base or cold plate off the socket centre, for example toward the AM5 hotspot. An asymmetric heatsink on a centred base does not count.

Not available

No5Press releaseglobal.deepcool.com/company/pressroom/newsrelease/2025/22352.shtmlRead 15 October 2026The list of features marks the offset mounting solution with For AK620 G2 only, and the text says it is exclusive to the AK620 G2, so the AK400 G2 has none. The offset heat pipes on the AK400 G2 page describe the heat pipe layout, not a shifted mount.

Heatsink

3 of 3 differ

Heat pipesiAir coolers only. Number of heat pipes. A U-shaped pipe with two ends in the fins counts as one. A T-shaped pipe with three ends, such as Cooler Master's 3DHP, also counts as one. The maker's count wins over a review or Cybenetics count.

21Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Heatpipes 2, heat sink material 2 x 3DHP / aluminum fins. Each 3DHP pipe has a third end in the centre of the fin stack, so the page counts two pipes.4Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026Technical specifications: Heatpipes 2.6Reviewenostech.com/cooler-master-v4-alpha-3dhp-coolerRead 14 October 2026Two heat pipes, each with one additional pipe end.

41Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Heatpipe: 4 pcs, 6 mm.5Press releaseglobal.deepcool.com/company/pressroom/newsrelease/2025/22352.shtmlRead 15 October 2026The release names models with 4, 5 and 6 heat pipes. The AK400 G2 is the four heat pipe model.9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026Four slightly staggered direct-touch copper heat pipes.

Heat pipe diameteriAir coolers only. Outer diameter, such as 6 or 8.

8mm4Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026Technical specifications: Heatpipes 2, Heatpipe Diameter 8mm. Hardware Busters also lists 8 mm. Enostech only says the pipes seem to be 6 mm from a photo, which is not used.5Reviewhwbusters.com/cooling/cooler-master-v4-alpha-3dhp-black-hyper-212-3dhp-black-argb-review-less-is-moreRead 14 October 2026Technical specifications: Heat pipes 2x 3DHP (8mm diameter).

6mm1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Heatpipe: diameter 6 mm x 4 pcs.

Direct-contact heat pipesiAir coolers only. The heat pipes touch the CPU directly instead of sitting in a solid base plate.

No1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Text: unlike most four-pipe coolers with direct contact, the solid copper base covers more surface area. So the pipes do not touch the CPU.

Yes1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Text: four direct touch copper heat pipes.9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026Four direct-touch copper heat pipes embedded in the base.

Liquid cooling

None of 7 known

Radiator sizeiAIO coolers only. The nominal size class from the fan positions, such as 240, 280, 360 or 420.

Not available

Not available

Radiator dimensionsiRadiator without fans. Length runs along the row of fans. Width runs across it. Thickness is the depth the airflow passes through, such as 27 or 38.

Not available

Not available

Radiator material

Not available

Not available

Tube lengthiLength of each tube between the pump block and the radiator, as published. When the two tubes differ, the shorter is stored and the other goes in the source note.

Not available

Not available

Max pump speediHighest rated pump speed. When the maker gives a range, this is its top.

Not available

Not available

Pump power connectoriHow the pump gets power. A pump wired through a supplied hub or cable uses the plug at the motherboard or PSU end. A pump powered from SATA with a separate 3-pin speed lead is SATA power.

Not available

Not available

VRM faniA small fan on the pump block that blows over the motherboard voltage regulators.

Not available

Not available

Fans

2 of 2 differ

Included fansiFans in the box that cool the heatsink or radiator, one row per fan model. A VRM fan on the pump block is left out. Speed, airflow, pressure and noise are the maker's figures for one fan at full speed, in the fastest mode and without a low-noise adapter. When a range is published, the top of the range is stored. Count is the number of rotors, so a unified frame with three 120 mm rotors counts 3 with size 120. Min speed is the lowest speed while spinning. A zero RPM stop is not stored. FDB and S-FDB are fluid dynamic. HDB is hydrodynamic. Cooler Master's Loop Dynamic Bearing is loop dynamic. If the maker gives airflow only in m³/h, convert with 1 m³/h = 0.5886 CFM, round to one decimal and say so in the source note. Connector is the fan's power lead. A separate lighting lead is not counted, and a maker cable or adapter in the box that ends in a 4-pin PWM plug counts as 4-pin PWM, even when the fan's own lead is proprietary. For an air cooler with one fan, the maker's noise figure for the cooler is the fan noise. A figure the maker does not label per fan or in total counts as per fan. When a maker table prints noise for the whole cooler with no per-fan label and the maker's own data sheet for the same fan gives a figure, the fan data sheet figure is stored.

ACooler Master V4 Alpha 3DHP Black

Model	Size (mm)	Fans	Max speed (rpm)	Airflow (CFM)	Static pressure (mmH₂O)	Noise (claimed) (dB(A))	Bearing	Connector
Mobius 120 (front)	120	1	2,050	63.1	2.69	22.6	Loop dynamic (LDB)	4-pin PWM
Mobius 120 (rear)	120	1	1,850	50.5	1.77	20	Loop dynamic (LDB)	4-pin PWM

Source1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Specification table, front and rear columns. Front: 120 x 120 x 25 mm, 0-2050 RPM +/-10%, 107.2 m3/h (63.1 CFM), 2.69 mmH2O, 22.6 dBA, 4-pin PWM. Rear: 0-1850 RPM +/-10%, 85.8 m3/h (50.5 CFM), 1.77 mmH2O, 20 dBA. Bearing: Loop Dynamic Bearing, stored as loop dynamic. The page labels the noise row Fan Pressure by mistake. The 0 RPM start is not stored, so no minimum speed is given. The page names the fans Mobius 120. The rear fan has the ring blade.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/kvkDKG7vf3yCRead 14 October 2026Same figures as the product page. The sheet says the rear exhaust fan blades use a ring-shaped design.3Owner's manualcoolermaster.egnyte.com/dl/sMg7tw0XrPRead 14 October 2026Step 11 shows both fans on one Y cable to a 4-pin CPU FAN header.4Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026Technical specifications name two fans: Cooler Master MOBIUS 120 (2050RPM) and Cooler Master MOBIUS 120 (1800RPM). The maker gives 1850 rpm for the rear fan, which is stored.5Reviewhwbusters.com/cooling/cooler-master-v4-alpha-3dhp-black-hyper-212-3dhp-black-argb-review-less-is-moreRead 14 October 2026Fans listed as CM Mobius 120 (2050 RPM) and CM Mobius 120 (1800 RPM), 120 x 120 x 25 mm, Loop Dynamic Bearing, 4-pin PWM, no daisy chain.

BDeepCool AK400 G2

Size (mm)	Fans	Max speed (rpm)	Airflow (CFM)	Static pressure (mmH₂O)	Noise (claimed) (dB(A))	Bearing	Connector
120	1	2,200	63.4	3.33	31.45	Hydraulic	4-pin PWM

Source1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Technical spec: fan 120 x 120 x 25 mm, speed 2200 +/-10% rpm (max), airflow 63.4 CFM, air pressure 3.33 mmAq (read as mmH2O), noise <= 31.45 dB(A), 4-pin PWM, hydro bearing (the text says hydraulic bearing), 12 VDC 0.25 A. One fan is in the box, per the manual. The page gives no fan model name. The page also says 0 RPM startup and stop below 5% PWM, which is not stored as a minimum speed.4Owner's manualdeepcool.com/download/pdf/AK400_G2_Series.pdfRead 15 October 2026Parts page: one fan (B x1) and two fan clips.9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026Review states the fan is essentially the same model as on the AK620 G2, 2200 rpm +/-10%, 63.4 CFM, 3.33 mmAq.

FansiNumber of included heatsink or radiator fans.

2=CalculatedFrom Included fans

1=CalculatedFrom Included fans

Display and lighting

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RGB lightingiLighting on the fans, the heatsink or the pump block.

No1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Fan LED Profiles: Non-LED.7Reviewtomshardware.com/pc-components/air-cooling/cooler-master-v4-and-v8-3dhp-reviewRead 14 October 2026Spec table: Lighting None, Colors Black.

No9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026Spec table: Lighting None.

Lighting standardiThe named lighting connection. ARGB lighting alone does not prove a 5 V header. Proprietary means the maker's own hub or cable system.

Not available

Not available

Built-in screeniA screen on the pump block or the heatsink. LCD and OLED screens show images. A segment readout shows digits only, such as the CPU temperature.

None1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026The cooler has no screen.

None9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026The wood-grain AK400 G2 has no screen. The digital display is on the separate Digital NYX models.

Screen sizeiDiagonal of the built-in screen.

Not available

Not available

Screen resolution

Not available

Not available

SoftwareiThe maker's software for lighting, the screen or the pump. Software that works with the cooler out of the box. Software that needs a separately sold controller is left out.

Not available

Not available

Needs a USB headeriThe cooler needs an internal USB 2.0 header on the motherboard for software control, sensors or the screen. A wireless receiver that plugs into any USB port does not count.

No3Owner's manualcoolermaster.egnyte.com/dl/sMg7tw0XrPRead 14 October 2026Step 11, PWM connection: the Y cable joins both fans to the CPU FAN header. No USB cable or software is part of the cooler.

Not available

Measured

6 of 6 differ

Cybenetics THETA, AMD AM5iThe THETA level for this cooler's class on the Cybenetics AMD AM5 platform with a Ryzen 9 7900X. It is rated at 30 dB(A) normalized noise, or at 25 dB(A) for a cooler that cannot reach 30 dB(A). No level means tested without a level. A cooler that Cybenetics did not test on this platform is left out. A report with a heading for this platform but no results counts as not tested.

Silver4Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026Report CMCLR00100 for the same model, tested September 26 to October 4, 2025 with the Default mount. THETA Silver, Air, rated at 30 dB(A). The report was evaluated under protocol revision 1.8, before revision 2.0.

Not available

Cybenetics THETA, Intel LGA1851iThe same rating on the Cybenetics Intel LGA1851 platform with a Core Ultra 9 285K. A cooler that Cybenetics did not test on this platform is left out. A report with a heading for this platform but no results counts as not tested.

Silver4Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026THETA Silver, Air, rated at 30 dB(A) on a Core Ultra 9 285K with the Default mount.

Not available

Overall performance at 30 dB(A), AM5 (measured)iThe Cybenetics Overall Performance score at 30 dB(A) normalized noise on the AMD AM5 platform. It is average CPU power times average CPU frequency divided by average CPU temperature. Higher is better. A cooler rated only at 25 dB(A) has no value here.

9,8524Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026Overall Performance 9,852 at 30 dB(A) on a Ryzen 9 7900X (PBO enabled).

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Overall performance at 30 dB(A), LGA1851 (measured)iThe same score on the Cybenetics Intel LGA1851 platform. Scores from the two platforms are not comparable with each other.

13,1974Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026Overall Performance 13,197 at 30 dB(A) on a Core Ultra 9 285K (Intel default mode).

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Noise at 100% fan setting (Cybenetics)iThe Cybenetics noise at the 100% fan setting, measured 1 m from the cooler in a hemi-anechoic chamber, with the pump of an AIO at full speed. Other reviewers' noise goes in the thermal test rows.

29.9dB(A)4Measurementcybenetics.com/evaluations/coolers/100Read 14 October 202629.9 dB(A) at the 100% fan setting, with the fans at 2009 and 1814 rpm. Hemi-anechoic chamber with a 6 dB(A) noise floor, Bruel & Kjaer 2270 sound analyser, microphone 1 m from the cooler at 30 to 45 degrees. The cooler never reaches more than 30 dB(A), so 30 dB(A) and full fan speed give the same row.

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Thermal tests (measured)iReviewer results, one row per test condition. Rows compare only when the test CPU, load, power and noise level match. The source note names the reviewer, ambient temperature, case or open bench, and thermal paste. Test CPU is the CPU name only, such as AMD Ryzen 9 7900X. The power limit and mode go in the load. Above ambient is stored only when the reviewer publishes it, never computed from the ambient.

ACooler Master V4 Alpha 3DHP Black

Test CPU	Load	CPU power (W)	Fan setting	Noise (dB(A))	CPU temperature (°C)
AMD Ryzen 9 7900X	Prime95 Small FFTs, full CPU load, PBO enabled	174.4	20 dB(A)	20	95.1
AMD Ryzen 9 7900X	Prime95 Small FFTs, full CPU load, PBO enabled	178.1	25 dB(A)	25	95.1
AMD Ryzen 9 7900X	Prime95 Small FFTs, full CPU load, PBO enabled	182.7	30 dB(A)	30	95.1
AMD Ryzen 9 7900X	Prime95 Small FFTs, full CPU load, PBO enabled	182.7	100%	29.9	95.1
Intel Core Ultra 9 285K	Prime95 Small FFTs, full CPU load, Intel default mode	296.6	20 dB(A)	20	96.2
Intel Core Ultra 9 285K	Prime95 Small FFTs, full CPU load, Intel default mode	296.8	25 dB(A)	25	94.8
Intel Core Ultra 9 285K	Prime95 Small FFTs, full CPU load, Intel default mode	297.3	30 dB(A)	30	93.3
Intel Core Ultra 9 285K	Prime95 Small FFTs, full CPU load, Intel default mode	297.3	100%	29.9	93.3
AMD Ryzen 9 9950X3D	PBO enabled, closed case, average CPU power when the CPU reaches its 95 C limit	237	100%	38.9	Not available

Source4Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026Cybenetics Cooling Solutions Test Protocol. Ambient held at 25 C plus or minus 0.5 C and 30% humidity in a climate chamber, open test bench (Cooler Master Test Bench for AM5, DimasTech Bench for LGA1851), Prime95 Small FFTs (as the protocol page states), values averaged over the last 4 minutes. Fans were set to reach each normalized noise level at 1 m, or 100%. CPU power is measured at the EPS connectors. The protocol states Arctic MX-4 paste for all tests. Mount: Default. The report does not publish a temperature above ambient. The AM5 rows use the AM5 platform and the LGA1851 rows the LGA1851 platform. The last row of each platform is the full fan speed result.8Reviewtomshardware.com/pc-components/air-cooling/cooler-master-v4-and-v8-3dhp-review/2Read 14 October 2026Tom's Hardware, Albert Thomas, review of 8 July 2026. Ryzen 9 9950X3D on an MSI X870E Carbon WiFi in a closed Tryx FLOVA F50 with one Noctua NF-A12 G2 intake fan, PBO enabled. With the CPU at its 95 C limit, the spec table gives the average cooled power as 237 W for the V4 Alpha, both at full speed fans and in the noise-normalized test at 38.9 dBA, which is the V4 Alpha's maximum noise in this setup. The review gives no temperature for this test. All other results are in charts. The ambient temperature, noise distance and paste are not stated in this review.

BDeepCool AK400 G2

Test CPU	Load	CPU power (W)	Fan setting	Noise (dB(A))	Above ambient (°C)
AMD Ryzen 9 9950X3D	Cinebench R23 multi-core, PBO enabled, closed case, average CPU power the cooler held	244.2	maximum	41.9	Not available
AMD Ryzen 9 9950X3D	Cinebench R23 multi-core, 200 W stock power limit, closed case	200	Not available	Not available	55.9
AMD Ryzen 9 9950X3D	Cinebench R23 multi-core with a 150 W power limit and Furmark on a GPU at 295 W, closed case	150	default motherboard fan curve	38.9	45.9
AMD Ryzen 9 9950X3D	Cinebench R23 multi-core, PBO enabled, closed case, noise-normalized test, average CPU power the cooler held	233.2	38.9 dB(A)	38.9	Not available
AMD Ryzen 9 9950X3D	Karhu RAM stress test, about 153 W on the CPU, 30-minute run, closed case	153	Not available	Not available	39.5

Source10Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-display/2Read 15 October 2026Tom's Hardware, Albert Thomas, review of 11 August 2026, values read from the bar charts. Ryzen 9 9950X3D on an MSI X870E Carbon WiFi in a closed Tryx Flova F50 case with one Noctua NF-A12 G2 intake fan and an RTX 4070 Ti Super, ambient 22 C. Paste is not stated. The temperature limit is 95 C, which every PBO air cooler reached in the maximum test, and the review gives no temperature for it. Row 1: average power with PBO, 244.2 W, with 41.9 dBA from the maximum noise chart (Pyle PSPL25 meter, distance not stated, the chart shows AK620 G2 at 42.4). Row 2: the 200 W stock limit, 55.9 C above ambient, no noise chart. Row 3: 150 W CPU with Furmark on the GPU at 295 W, 45.9 C above ambient, noise 38.9 dBA at the default fan curve of the motherboard. Row 4: noise normalized to 38.9 dBA, 233.2 W cooled. Row 5: Karhu test, 39.5 C above ambient for the CPU, no noise chart.

Dimensions and weight

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DimensionsiAir coolers only. The cooler with its included fans in the standard position, without the mounting kit. Height runs from the bottom of the base to the top. Depth runs along the airflow, fans included. Width runs across the fins. Map by direction, not by letter. Width runs across the fins, depth runs along the airflow. DeepCool's 129 x 138 x 160 mm (L x W x H) is width 129, depth 138, height 160.

Width133Height161Depth114mm(5.2 × 6.3 × 4.5 in)1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Dimension 133 x 114 x 161 mm. The press text gives the order as W x D x H. The size includes both fans, as the Hyper 212 3DHP with one fan is 86 mm deep and this one is 114 mm.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/kvkDKG7vf3yCRead 14 October 2026Dimensions (L x W x H) 133 x 114 x 161 mm. Packaging 155 x 155 x 215 mm.4Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026Technical specifications: Length 133 mm, Width 114 mm, Height 161 mm, the maker's figures.5Reviewhwbusters.com/cooling/cooler-master-v4-alpha-3dhp-black-hyper-212-3dhp-black-argb-review-less-is-moreRead 14 October 2026Technical specifications: Dimensions with fans (L x W x H) 133mm x 114mm x 161mm.7Reviewtomshardware.com/pc-components/air-cooling/cooler-master-v4-and-v8-3dhp-reviewRead 14 October 2026Spec table for the V4 Alpha 3DHP: 133 (W) x 114 (D) x 161 mm (H).9Press articleswemod.com/article/20251024_cooler-master-v4-alpha-black-3dhp/1Read 14 October 2026The cooler measures 133 mm x 114 mm x 161 mm (WxDxH).

Width132Height156Depth92mm(5.2 × 6.1 × 3.6 in)1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Product Dimensions 132 x 92 x 156 mm (L x W x H), read as width 132, depth 92, height 156 by the DeepCool rule in the dimensions help. Arvutitark and a Czech distributor print the same 156 mm and 92 mm figures.11Retailer pagearvutitark.ee/en/pc-components/coolers/protsessori-jahutid/k-cooler-deepcool-ak400-g2-1511621Read 15 October 2026Cooler height 156 mm and 151 mm.

Heatsink dimensionsiAir coolers only. The heatsink without fans, as the maker lists it. Map by direction, not by letter. Width runs across the fins, depth runs along the airflow. DeepCool's 129 x 138 x 160 mm (L x W x H) is width 129, depth 138, height 160. A heatsink depth that equals the depth with fans includes the fan, so that axis is not stored.

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Width130Height151mm(5.1 × 5.9 in)1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Heatsink Dimensions 130 x 92 x 151 mm (L x W x H). Width 130 and height 151 are stored. The depth of 92 mm equals the product depth with the fan, although the 25 mm fan sits in front of the fins, so the heatsink depth is not stored.

WeightiAn air cooler with its included fans. An AIO cooler as one unit with pump block, tubes, radiator and fans. Mounting hardware is left out when the maker states it separately. When one maker figure may include the mounting kit, such as a press release net weight above the product page figure, the product page figure is stored. An RGB edition can weigh a little more or less, so it is per variant.

917g(2 lb)4Measurementcybenetics.com/evaluations/coolers/100Read 14 October 2026Technical specifications: Weight 917g. Hardware Busters gives 917 g with fans. The maker lists the net weight as TBD.5Reviewhwbusters.com/cooling/cooler-master-v4-alpha-3dhp-black-hyper-212-3dhp-black-argb-review-less-is-moreRead 14 October 2026Technical specifications: Weight (with fans) 917g.

950g(2.1 lb)1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026Net Weight 950 g.2Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-WH-Wood-Grain-Top-Cover-CPU-Cooler/2025/21909.shtmlRead 15 October 2026Net Weight 950 g, same as the black page.

Heatsink weightiAir coolers only. The heatsink without fans.

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In the box

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In the boxiItems supplied with this exact model, verbatim.

Cooler with two 120 mm fans, Intel backplate x1, Intel mounting bar x2, AMD mounting bar x2, Screw x2, Cryofuze thermal paste x1, Fan PWM Y cable x1, Installation manual3Owner's manualcoolermaster.egnyte.com/dl/sMg7tw0XrPRead 14 October 2026Package content list on page 2 uses letters and drawings without names: cooler with fans (A) x1, Intel backplate marked LGA1700/1200/115X (B) x1, Intel bars (C) x2, AMD bars (D) x2, screws (E) x2, thermal paste syringe (F) x1 and a Y cable (G) x1. Names are read from the drawings and the installation pages. Tom's Hardware lists the installation manual in the box of the same range.

Mounting hardware for AMD and Intel platforms, Alternative top cover, 120 mm fan and fan clips, Installation manual4Owner's manualdeepcool.com/download/pdf/AK400_G2_Series.pdfRead 15 October 2026Parts pages: heatsink x1, fan x1, Intel backplate x1, bracket x1, fan clips x2 and the Intel and AMD standoffs and screws x4 each. The alternative top cover and manual come from the Tom's Hardware package list.9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026Package list: mounting hardware for AMD and Intel platforms, alternative top covers, 120 mm fans and fan clips and the installation manual. The screwdriver is for the AK620 G2 only. Wording is shortened from the list.

Links

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Product page

www.coolermaster.com/en-global/v4-alpha-3dhp-black.html1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026

www.deepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtml1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 2026

Spec sheet

coolermaster.egnyte.com/dl/kvkDKG7vf3yC1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Downloads section: Product Sheet link on the maker's Egnyte share.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/kvkDKG7vf3yCRead 14 October 2026Two page product sheet, 2025 edition. The public link downloads the PDF.

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Manual

coolermaster.egnyte.com/dl/sMg7tw0XrP1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Downloads section: Manual link on the maker's Egnyte share.3Owner's manualcoolermaster.egnyte.com/dl/sMg7tw0XrPRead 14 October 202614 page installation guide, version 2.0 of June 2025, mostly drawings.

www.deepcool.com/download/pdf/AK400_G2_Series.pdf4Owner's manualdeepcool.com/download/pdf/AK400_G2_Series.pdfRead 15 October 2026AK400 G2 Series wood grain top cover manual, 24 pages, mostly drawings (read with OCR and by eye).

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

5years1Maker product pagecoolermaster.com/en-global/v4-alpha-3dhp-black.htmlRead 14 October 2026Specification table: Warranty 5 years. The page names no market.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/kvkDKG7vf3yCRead 14 October 2026Warranty 5 years.7Reviewtomshardware.com/pc-components/air-cooling/cooler-master-v4-and-v8-3dhp-reviewRead 14 October 2026Spec table: five years for the V4 Alpha, six years for the V8 Ace.

3years1Maker product pagedeepcool.com/products/Cooling/cpuaircoolers/AK400-G2-Wood-Grain-Top-Cover-CPU-Cooler/2025/21908.shtmlRead 15 October 20263 Years Limited Warranty Coverage. The page names no market.5Press releaseglobal.deepcool.com/company/pressroom/newsrelease/2025/22352.shtmlRead 15 October 2026Three-year warranty.9Reviewtomshardware.com/pc-components/air-cooling/deepcool-ak620-and-ak400-g2-review-quiet-and-powerful-with-woodgrain-or-a-digital-displayRead 15 October 2026Spec table: 3 years.

Both are also in the API. Back to all CPU coolers.