CPU coolers / Compare

be quiet! Dark Rock 6 vs DeepCool AK400 G2

A

Product A: be quiet!

Dark Rock 6

30 of 54 known

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B

Product B: DeepCool

AK400 G2

29 of 54 known

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Only differences

Abe quiet! Dark Rock 6

BDeepCool AK400 G2

General

8 of 12 differ

Series

Dark Rock5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Review text: the standard Dark Rock 6 next to the Dark Rock Pro 6.

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.

BK0465Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table: article number BK046.11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026Model BK046.

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

42600521931435Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table: EAN code 4260052193143.

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.

5 May 20264Press articlegeektopia.es/es/technology/2026/05/05/noticias/be-quiet-presenta-las-refrigeraciones-dark-rock-6-y-dark-rock-pro-6.htmlRead 15 October 2026Launch news of 5 May 2026 for the Dark Rock 6 and Dark Rock Pro 6. The CES 2026 showing was a preview.

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

Available5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Published 26 May 2026 as a review of the product on sale.11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026On sale at LDLC at EUR 89.95 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.

$109.93Press releasecdrinfo.com/d7/content/be-quiet-dark-rock-pro-6Read 15 October 2026Recommended retail prices EUR 89.90 / $109.90 / GBP 64.99 for the Dark Rock 6. US recommended prices exclude tax.5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table MSRP $109.90.9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026Price line: $109.90.10Reviewenostech.com/be-quiet-dark-rock-6-air-cpu-cooler-reviewRead 15 October 2026MSRP US $109.90.

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.

€89.92Press articlepcgameshardware.de/CPU-Kuehler-Hardware-255512/News/Dark-Rock-Pro-6-Be-Quiet-Release-Preis-kaufen-1530283Read 15 October 2026Recommended price 89.90 euro for the Dark Rock 6 (German article, VAT included).3Press releasecdrinfo.com/d7/content/be-quiet-dark-rock-pro-6Read 15 October 2026EUR 89.90.5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table MSRP EUR 89.90.9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026Price line: EUR 89.90.10Reviewenostech.com/be-quiet-dark-rock-6-air-cpu-cooler-reviewRead 15 October 2026MSRP EUR 89.90.

€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

Black11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026Spec table: Black.

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.

Air5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 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 tower5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table: single-tower air cooler.7Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6/2Read 15 October 2026Single stack of fins on a single-tower heatsink with one 135 mm fan.9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026Review text: no dual-tower design, a single stack of heatsink fins.11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026Spec table: Dual tower No, Top Flow No, cooling type ventirad.

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.

220W2Press articlepcgameshardware.de/CPU-Kuehler-Hardware-255512/News/Dark-Rock-Pro-6-Be-Quiet-Release-Preis-kaufen-1530283Read 15 October 2026Maximum cooling capacity 220 W TDP.5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table: 220 W TDP.6Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 202610Reviewenostech.com/be-quiet-dark-rock-6-air-cpu-cooler-reviewRead 15 October 2026Rated for 220 W thermal power dissipation.11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026Max CPU TDP 220 W.

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.

Nickel-plated copper5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table: liquid metal compatibility, nickel-plated base. Review text: nickel-plated copper base.6Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 2026Maker's table: base material copper / nickel plating.7Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6/2Read 15 October 2026The base and heat pipes are copper and the copper base is covered with electroplated nickel.9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026The contact plate is nickel-coated so liquid metal paste can be used.10Reviewenostech.com/be-quiet-dark-rock-6-air-cpu-cooler-reviewRead 15 October 2026Nickel-plated copper base, safe with liquid metal.11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026Feature text copied from the maker: nickel-plated base, compatible with liquid metal thermal pastes. Six copper heat pipes and aluminium fins.

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.

Included6Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 2026Maker's table: thermal grease included. The review shows a small tube of thermal grease.9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026A small tube of thermal compound is in the box. The cooler has no pre-printed paste on the contact plate.

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

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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, LGA1155, LGA1151, LGA11502Press articlepcgameshardware.de/CPU-Kuehler-Hardware-255512/News/Dark-Rock-Pro-6-Be-Quiet-Release-Preis-kaufen-1530283Read 15 October 2026Intel 1851 / 1700 / 1200 / 1150 / 1151 / 1155 and AMD AM5 / AM4. The maker lists no LGA1156.5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table: Intel 1851 / 1700 / 1200 / 1150 / 1151 / 1155, AMD AM5 / AM4.6Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 20269Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026Spec table: Intel LGA1851, LGA1700, LGA1200, LGA115x and AMD AM4, AM5. The maker's own list names LGA1150, LGA1151 and LGA1155.10Reviewenostech.com/be-quiet-dark-rock-6-air-cpu-cooler-reviewRead 15 October 2026Intel LGA1150/1151/1155/1200/1700 and AMD AM4 and AM5. The review does not mention LGA1851.

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.

Yes8Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6/3Read 15 October 2026Mounting bars have two positions marked 0 and 8. The user manual calls 0 the standard position and the offset 8 position the one for maximum cooling on AMD Ryzen 3000, 5000, 7000 and 9000. The reviewer found his Ryzen 7 9700X ran cooler in the standard position.10Reviewenostech.com/be-quiet-dark-rock-6-air-cpu-cooler-reviewRead 15 October 2026AM5 mounting brackets give an offset of 8 mm: each bracket has holes marked 0 and 8, and 8 covers the CPU hotspot best.

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

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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.

65Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table: 6 heat pipes of 6 mm.6Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 20267Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6/2Read 15 October 2026Six continuous U-shaped heat pipes lead away from the contact plate and split into two fin stacks. The reviewer counts twelve pipe ends, which is six pipes here.9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026Spec table: 6 x 6 mm heat pipes.10Reviewenostech.com/be-quiet-dark-rock-6-air-cpu-cooler-reviewRead 15 October 2026Six copper heat pipes of 6 mm, 51 fins.11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026Feature text: 6 copper heat pipes.

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.

6mm5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 20266Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 20269Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026

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.

No7Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6/2Read 15 October 2026All heat pipes are soldered to the base, so they do not touch the CPU directly.

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

1 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.

Abe quiet! Dark Rock 6

Model	Size (mm)	Fans	Max speed (rpm)	Airflow (CFM)	Static pressure (mmH₂O)	Noise (claimed) (dB(A))	Bearing	Connector
Silent Wings PWM 135 mm	135	1	2,000	79.48	2.48	31.1	Fluid dynamic (FDB)	4-pin PWM

Source2Press articlepcgameshardware.de/CPU-Kuehler-Hardware-255512/News/Dark-Rock-Pro-6-Be-Quiet-Release-Preis-kaufen-1530283Read 15 October 2026Fan 135 x 135 x 25 mm, 2,000 rpm at 100% PWM, 79.48 / 135.04 CFM / m3/h, 2.48 mmH2O, 4-pin PWM, overall noise 11.9 / 23.2 / 31.1 dB(A) at 50 / 75 / 100%.5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table: 1x 135 mm Silent Wings PWM, 135 x 135 x 25 mm, 2000 RPM, 79.48 CFM / 135.04 m3/h at 100% PWM, 2.48 mmH2O, 4-pin PWM, noise 11.9 / 23.2 / 31.1 dB(A) at 50 / 75 / 100%. EnosTech prints 74.98 CFM and 31.3 dB(A), which do not match the maker's 135.04 m3/h (79.49 CFM).6Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 2026Maker's table: Silent Wings PWM, 135 x 135 x 25 mm, 2000 rpm, 79.48 / 135.04 CFM / m3/h, 2.48 mmH2O, fluid dynamic bearing, 6-pole motor, 12 V, 4-pin PWM, overall noise 31.1 dB(A).9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026Custom 135 mm Silent Wings fan with a six-pole motor and fluid dynamic bearing, 0-2,000 rpm, 79.48 CFM, 2.48 mmH2O, max 31.1 dBA.11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026Retailer's airflow row reads 89.95 CFM, which is the Pro 6 figure in m3/h. It is not used. Fan 135 mm, 2000 rpm, 2.48 mmH2O, 31.1 dB, 4-pin PWM. Feature text: asymmetrical design and cut-outs give compatibility with memory modules and VRM coolers, without space constraints. This is why no RAM height limit is stored.

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.

1=CalculatedFrom Included fans

1=CalculatedFrom Included fans

Display and lighting

0 of 7 differ

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

No11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026Spec table: Luminous No.

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.

None11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026Spec table: Integrated display No.

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.

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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.

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Measured

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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.

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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.

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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.

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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.

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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.

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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.

Abe quiet! Dark Rock 6

Test CPU	Load	CPU power (W)	Fan setting	Noise (dB(A))	CPU temperature (°C)	Above ambient (°C)
AMD Ryzen 9 9950X3D	Cinebench 26 multi-thread, CPU set to 170 W TDP, average core temperature over ambient	170	600 rpm	Not available	Not available	61.3
AMD Ryzen 9 9950X3D	Cinebench 26 multi-thread, CPU set to 170 W TDP, average core temperature over ambient	170	1,200 rpm	Not available	Not available	64.1
AMD Ryzen 9 9950X3D	Cinebench 26 multi-thread, CPU set to 170 W TDP, average core temperature over ambient	170	2,000 rpm (maximum)	42.9	Not available	54.6
AMD Ryzen 9 9950X3D	Cinebench 26 multi-thread, CPU set to 105 W TDP, average core temperature over ambient	105	600 rpm	Not available	Not available	53.1
AMD Ryzen 9 9950X3D	Cinebench 26 multi-thread, CPU set to 105 W TDP, average core temperature over ambient	105	1,200 rpm	Not available	Not available	42.8
AMD Ryzen 9 9950X3D	Cinebench 26 multi-thread, CPU set to 105 W TDP, average core temperature over ambient	105	2,000 rpm (maximum)	42.9	Not available	39.9
AMD Ryzen 9 9950X3D	Cinebench 26 multi-thread, CPU set to 65 W TDP, average core temperature over ambient	65	600 rpm	Not available	Not available	31.6
AMD Ryzen 9 9950X3D	Cinebench 26 multi-thread, CPU set to 65 W TDP, average core temperature over ambient	65	1,200 rpm	Not available	Not available	25.2
AMD Ryzen 9 9950X3D	Cinebench 26 multi-thread, CPU set to 65 W TDP, average core temperature over ambient	65	2,000 rpm (maximum)	42.9	Not available	21.3
AMD Ryzen 7 9700X	Prime95 Small FFTs, at least 10 minutes, maximum core temperature, stock paste, standard mounting position	Not available	100%	44.7	77.1	Not available

Source8Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6/3Read 15 October 2026APH Networks on a Ryzen 7 9700X, ASUS ProArt X870E-Creator WiFi in a TRYX FLOVA F50 case, room of about 23 C, the cooler's own stock paste, Prime95 Small FFTs for at least 10 minutes, maximum core temperature in HWiNFO, standard mounting position. Result 77.1 C with no throttling. The reviewer measured 44.7 dBA at 50 cm at maximum fan speed. The CPU power, paste name and ambient are not stated precisely, so no power is stored.9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026Club386 with a Ryzen 9 9950X3D on an MSI MEG X870E Ace Max in a closed be quiet! Light Base 900 FX case with the case fans at 30%, Cinebench 26 multi-thread. The CPU ran at 170, 105 and 65 W TDP settings. The power is the setting, not a measured value. Temperatures are the average core temperature minus the room temperature, which the review does not state. The peak-core delta T values are 73.3, 71.6 and 66.4 C at 170 W, 60.5, 49.4 and 45.3 C at 105 W and 43.5, 36.4 and 32.4 C at 65 W for 600, 1,200 and 2,000 rpm. At 170 W and 600 rpm the CPU throttled from about 200 W to 172 W during the run, so that row is not comparable with the others. Noise is a meter 10 in (25 cm) in front of the closed case, so it does not compare with Cybenetics' 1 m figures. 600 and 1,200 rpm were undetected and are not stored. The 42.9 dBA at 2,000 rpm is repeated in each power row. The paste is not named.

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.

Width139Height162Depth102.4mm(5.5 × 6.4 × 4 in)2Press articlepcgameshardware.de/CPU-Kuehler-Hardware-255512/News/Dark-Rock-Pro-6-Be-Quiet-Release-Preis-kaufen-1530283Read 15 October 2026Table row 'Abmessungen, inkl. Luefter (L x B x H in mm)': 102.4 x 139 x 162. Stored as depth 102.4, width 139, height 162.5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table: 102.4 x 139 x 162 mm including fan.6Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 2026Reviewer copy of the maker's table: overall dimensions without mounting material 102.4 x 139 x 162 mm.9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026Spec table: 102 x 139 x 162 mm with fan, rounded.10Reviewenostech.com/be-quiet-dark-rock-6-air-cpu-cooler-reviewRead 15 October 2026102.4 x 139 x 162 mm (L x W x H). The review gives 1.05 kg, which is not used because the maker states 1005 g.11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 2026Retailer lists 162 mm height and swaps width and depth, so the maker's table is used.

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.

Width139Height162Depth77.4mm(5.5 × 6.4 × 3 in)6Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 2026Reviewer copy of the maker's table: heatsink 77.4 x 139 x 162 mm (L x W x H). Stored as depth 77.4, width 139, height 162. With the 25 mm fan this gives the 102.4 mm overall depth.

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.

1,005g(2.2 lb)2Press articlepcgameshardware.de/CPU-Kuehler-Hardware-255512/News/Dark-Rock-Pro-6-Be-Quiet-Release-Preis-kaufen-1530283Read 15 October 2026Table row 'Gesamtgewicht (g)': 1.005, the German thousands dot, so 1005 g.5Reviewguru3d.com/review/bequiet-dark-rock-6-cpu-cooler-reviewRead 15 October 2026Spec table: 1005 g including fan.6Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 2026The copy of the maker's table reads 1.01 kg, a rounding of the 1005 g stated by PCGH and Guru3D.9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026Spec table: 1,005 g with fan.11Retailer pageldlc.com/en/product/PB00741958.htmlRead 15 October 20261005 g.

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.

836g(1.8 lb)7Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6/2Read 15 October 2026APH Networks weighed 836 g for the heatsink alone and about 1012 g with the front fan attached. The maker states 1005 g with the fan.

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In the box

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In the boxiItems supplied with this exact model, verbatim.

2x AMD Mounting Brackets, 4x AMD Spacers, 4x AMD Screws, 1x Intel Backplate, 4x Intel Screws for backplate, 4x Intel Rubber washers for backplate, 2x Intel Mounting Brackets, 4x Standoff Screws, 1x Thermal Paste, 1x Long Neck Screwdriver, 1x User Guide, 1x Warranty Paper6Reviewaphnetworks.com/reviews/be-quiet-dark-rock-6Read 15 October 2026Maker's table accessories: thermal grease, Intel and AMD mounting set and screwdriver.10Reviewenostech.com/be-quiet-dark-rock-6-air-cpu-cooler-reviewRead 15 October 2026Packing and Unboxing list as printed. Guru3D also mentions fan clips in the box, which this list does not show.

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.bequiet.com/en/cpucooler/73251Maker product pagebequiet.com/en/cpucooler/7325Read 15 October 2026Product page of the BK046. bequiet.com blocks agents, so it was not opened. The maker's spec table was read in copies at PCGH, Guru3D and APH Networks, and the maker's feature text in the LDLC product description.

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

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Manual

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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.

3years2Press articlepcgameshardware.de/CPU-Kuehler-Hardware-255512/News/Dark-Rock-Pro-6-Be-Quiet-Release-Preis-kaufen-1530283Read 15 October 2026Text: three-year manufacturer warranty.3Press releasecdrinfo.com/d7/content/be-quiet-dark-rock-pro-6Read 15 October 2026Dark Rock 6 is covered by a 3-year manufacturer's warranty.9Reviewclub386.com/be-quiet-dark-rock-6-reviewRead 15 October 2026Spec table: 3 years.10Reviewenostech.com/be-quiet-dark-rock-6-air-cpu-cooler-reviewRead 15 October 20263-year warranty.

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.