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Thermalright Peerless Assassin 140 SE

ThermalrightCPU cooler

Peerless Assassin 140 SE

Released June 2026.4Press articleguru3d.com/story/thermalright-expands-peerless-assassin-series-with-v3-twintower-air-coolersRead 15 October 2026Article of 2026-06-10: the Peerless Assassin 140 SE and the 120 SE V3 are scheduled to become available on June 26, 2026. The article gives a price of about $35 at least in Asia, which is an estimate and is not stored. The maker page record is dated 2025-10-10 and Computer Orbit's feed lists the cooler from 2026-01-29, but neither is availability evidence, so the press month is used. Last checked 16 October 2026.

Cooler type
Air
Fans
2
Rated TDP
Not available
CPU sockets
AM5, AM4, LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151, LGA1150

22 of 54 fields known.

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All specs

SourceCalculated

General

Series
Peerless Assassin1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Category: Peerless Assassin.
Model numbers
Not available
GTIN / EAN
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.
Announced
Not available
Status
Available1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026The page is live and retailers list the cooler.
Predecessor
Not available
Successor
Not available
Launch price (US)
Not available
Launch price (EU)
Not available
Markets
Not available
Colours
Not available
Cooler type
Air1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026
Air cooler layout
Dual tower1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Listed under Dual Towers in the Peerless Assassin series.
Rated TDP (claimed)
Not available
Base material
Nickel-plated copper1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Copper Base: C1100 Pure copper nickel plated.
Thermal paste
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

CPU sockets
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 clearance
Not available
Offset mounting
Not available

Heatsink

Heat pipes
61Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Heat pipes: 6mm heatpipe x 6 units.
Heat pipe diameter
6mm1Maker product pagethermalright.com/product/peerless-assassin-140-seRead 15 October 2026Heat pipes: 6mm heatpipe x 6 units.
Direct-contact heat pipes
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

We could not find any of these 7 fields. Show them
Radiator size
Not available
Radiator dimensions
Not available
Radiator material
Not available
Tube length
Not available
Max pump speed
Not available
Pump power connector
Not available
VRM fan
Not available

Fans

Included fans
ModelSize (mm)FansMax speed (rpm)Airflow (CFM)Static pressure (mmH₂O)Noise (claimed) (dB(A))BearingConnector
TL-C12C-X28 V212011,85088.892.2129.5Fluid dynamic (FDB)4-pin PWM
TL-D14CB14011,50077.82.0925.6Fluid 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.
Fans
2

Display and lighting

RGB lighting
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 standard
Not available
Built-in 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 size
Not available
Screen resolution
Not available
Software
Not available
Needs a USB header
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

We could not find any of these 6 fields. Show them
Cybenetics THETA, AMD AM5
Not available
Cybenetics THETA, Intel LGA1851
Not available
Overall performance at 30 dB(A), AM5 (measured)
Not available
Overall performance at 30 dB(A), LGA1851 (measured)
Not available
Noise at 100% fan setting (Cybenetics)
Not available
Thermal tests (measured)
Not available

Dimensions and weight

Front and side, drawn to scale.

Dimensions
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 dimensions
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.
Weight
Not available
Heatsink weight
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

In the box
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.

Warranty

We could not find any of these 1 fields. Show them
Manufacturer warranty (source market)
Not available

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Variants

Each variant lists only what differs from the specs above.

GTINRGB lightingLighting standard
0814256022088NoNot available
0814256022095YesARGB 5 V

Sources

We read 8 sources for this CPU cooler. The numbers match the markers in the sheet.

  1. Read 15 October 2026Backs 14 fields
  2. Read 15 October 2026Backs 6 fields
  3. Read 15 October 2026Backs 1 field
  4. Read 15 October 2026Backs 2 fields
  5. Read 15 October 2026Backs 1 field
  6. Read 15 October 2026Backs 3 fields
  7. Read 15 October 2026Backs 1 field
  8. Read 15 October 2026Backs 2 fields

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