CPU coolers / Compare

Cooler Master V4 Alpha 3DHP Black vs Thermalright Peerless Assassin 140 SE

A

Product A: Cooler Master

V4 Alpha 3DHP Black

33 of 54 known

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B

Product B: Thermalright

Peerless Assassin 140 SE

22 of 54 known

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Only differences

ACooler Master V4 Alpha 3DHP Black

BThermalright Peerless Assassin 140 SE

General

6 of 12 differ

Series

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

Peerless Assassin1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Category: Peerless Assassin.

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.

Not available

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.

0814256022088, 08142560220956Retailer pageregard.ru/product/777593/kuler-thermalright-peerless-assassin-140-seRead 15 October 2026Alternative name 814256022088, stored as the 13 digit 0814256022088. Komputronik gives the same EAN.7Retailer pagekomputronik.pl/product/1000573/thermalright-peerless-assassin-140-se.htmlRead 15 October 2026Plain edition: EAN 814256022088. Amazon US listings carry another code, 739538428641, for a PA140SE-D2 listing. It is not stored because it is not on a Thermalright-prefix code and its pairing is unclear.8Retailer pagekomputronik.pl/product/1000574/thermalright-peerless-assassin-140-se-argb.htmlRead 15 October 2026ARGB edition: EAN 814256022095, stored as 0814256022095. It follows the plain edition's number.

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.

Not available

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.

Available1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026The page is live and retailers list the cooler.

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

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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

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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

Not available

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

Not available

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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.

Not available

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 pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026

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.

Dual tower1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Listed under Dual Towers in the Peerless Assassin series.

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

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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.

Nickel-plated copper1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Copper Base: C1100 Pure copper nickel plated.

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.

Included2Owner's manualdownload.thermalright.com/manuals/PEERLESSASSASSIN140SE.pdfRead 15 October 2026Parts list item L: Thermal Grease x1 (printed Greasa). The steps say to apply thermal compound on the CPU and to remove the protective film from the copper base.

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, 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, LGA1156, LGA1155, LGA1151, LGA11501Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Intel LGA115X/1200/1700/1851 and AMD AM4/AM5. LGA115X is written as LGA1150, LGA1151, LGA1155 and LGA1156.2Owner's manualdownload.thermalright.com/manuals/PEERLESSASSASSIN140SE.pdfRead 15 October 2026Install sections for AM4/AM5, Intel LGA115X/1200 and Intel LGA1700/1851.

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

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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.

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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.

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.

61Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Heat pipes: 6mm heatpipe x 6 units.

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 pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Heat pipes: 6mm heatpipe x 6 units.

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.

No1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026The page lists a copper base. The blueprint shows the heat pipes entering a base block. No direct touch design is claimed.

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

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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

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Radiator material

Not available

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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

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

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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

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

Not available

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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.

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.

BThermalright Peerless Assassin 140 SE

Model	Size (mm)	Fans	Max speed (rpm)	Airflow (CFM)	Static pressure (mmH₂O)	Noise (claimed) (dB(A))	Bearing	Connector
TL-C12C-X28 V2	120	1	1,850	88.89	2.21	29.5	Fluid dynamic (FDB)	4-pin PWM
TL-D14CB	140	1	1,500	77.8	2.09	25.6	Fluid dynamic (FDB)	4-pin PWM

Source1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Two fan spec tables. TL-C12C-X28 V2: 120 x 120 x 28 mm, 1850 RPM +/-10% max, 29.5 dBA, 88.89 CFM max, 2.21 mm H2O max, 4 pin PWM, S-FDB bearing. TL-D14CB: 140 x 140 x 27 mm, 1500 RPM +/-10% max, 25.6 dBA, 77.8 CFM max, 2.09 mm H2O max, 4 pin PWM, S-FDB bearing. S-FDB is stored as fluid dynamic. No minimum speed is published. The manual shows one fan of each size.2Owner's manualdownload.thermalright.com/manuals/PEERLESSASSASSIN140SE.pdfRead 15 October 2026Parts list: 120mm FAN x1, 140mm FAN x1, 120mm FAN Clip x2, 140mm FAN Clip x2, FAN Y Cable x1.

FansiNumber of included heatsink or radiator fans.

2=CalculatedFrom Included fans

2=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.

No6Retailer pageregard.ru/product/777593/kuler-thermalright-peerless-assassin-140-seRead 15 October 2026Retailer spec table, Lighting: none. Thermalright's fan tables list no LED line for the plain edition.

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.

None1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026The page lists a heatsink and fans only. No screen is mentioned.

Screen sizeiDiagonal of the built-in screen.

Not available

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Screen resolution

Not available

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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.

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.

No2Owner's manualdownload.thermalright.com/manuals/PEERLESSASSASSIN140SE.pdfRead 15 October 2026The wiring note shows only the 4-pin PWM CPU FAN header and says to use the Y cable for two fans. No USB connection is shown.

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.

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).

Not available

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).

Not available

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.

Not available

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.

BThermalright Peerless Assassin 140 SE

Not available

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).

Width140Height158Depth160mm(5.5 × 6.2 × 6.3 in)1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026The blueprint on the page shows 140 mm across, 158 mm high and 160 mm deep with the fans fitted. Width 140 is the front view, depth 160 is the side view.5Retailer pageldlc.com/en/product/PB00744007.htmlRead 15 October 2026LDLC lists fan included: height 158, width 160 and depth 140 mm. Its width is the 160 mm along the airflow and its depth is the 140 mm across the fins, so it matches the maker blueprint. LDLC wrongly says both fans are 140 mm.6Retailer pageregard.ru/product/777593/kuler-thermalright-peerless-assassin-140-seRead 15 October 2026Size (W x H x D) 140 x 158 x 160 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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Width140Height158Depth132mm(5.5 × 6.2 × 5.2 in)1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Heatsink Specifications: L140 mm x W132 mm x H158 mm. L runs across the fins and W along the airflow of this dual-tower cooler, so width 140, depth 132 and height 158. The page does not say whether the fans are included. The blueprint is 160 mm deep with the 28 mm front fan, which is 132 plus 28, so this is the heatsink alone.

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.

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Heatsink weightiAir coolers only. The heatsink without fans.

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840g(1.9 lb)4Press articleguru3d.com/story/thermalright-expands-peerless-assassin-series-with-v3-twintower-air-coolersRead 15 October 2026Spec table: weight 840 g without fans, 132 x 140 x 158 mm. xcom-shop.ru lists 900 g, which is lower than 840 g plus two fans, so it is not a heatsink or total weight and is not stored. No source gives the weight with fans.

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.

Heatsink x1, 120mm FAN x1, 140mm FAN x1, Backplate x1, INTEL Bracket x2, AM4/AM5 Bracket x2, 120mm FAN Clip x2, 140mm FAN Clip x2, 1200 Standoffs x4, INTEL Screw x4, FAN Y Cable x1, AM4/AM5 Standoffs x4, AM4/AM5 Screw x4, Thermal Grease x1, 1700 Standoffs x42Owner's manualdownload.thermalright.com/manuals/PEERLESSASSASSIN140SE.pdfRead 15 October 2026Parts list items A to M, quantities as printed, with a missing space in the 140mm fan clip line restored. The printed AM4/AM5 standoff line has no item letter in the text layer. The Chinese list names item J as AM4 standoffs.

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.thermalright.com/product/peerless-assassin-140-se1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 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.

download.thermalright.com/manuals/PEERLESSASSASSIN140SE.pdf2Owner's manualdownload.thermalright.com/manuals/PEERLESSASSASSIN140SE.pdfRead 15 October 2026

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.

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