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Thermalright Peerless Assassin 120 SE V3

ThermalrightCPU cooler

Peerless Assassin 120 SE V3

Released June 2026.3Press articleguru3d.com/story/thermalright-expands-peerless-assassin-series-with-v3-twintower-air-coolersRead 14 October 2026Article of 2026-06-10: the 120 SE V3 and 140 SE V3 are scheduled to become available on June 26, 2026. PCGamesN of June 11, 2026 says the V3 is already available from Amazon. The Thermalright site page record is dated 2024-12-26 and one forum comment claims a European listing since 2025-08, but neither is confirmed, so the press month is used. Last checked 14 October 2026.

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

19 of 54 fields known.

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All specs

SourceCalculated

General

Series
Peerless Assassin1Maker product pagethermalright.com/product/peerless-assassin-120-se-v3Read 14 October 2026Category: Peerless Assassin.
Model numbers
Not available
GTIN / EAN
Not available
Announced
10 June 20263Press articleguru3d.com/story/thermalright-expands-peerless-assassin-series-with-v3-twintower-air-coolersRead 14 October 2026Guru3D article date. Thermalright issued no separate press release that could be read.
Status
Available4Press articlepcgamesn.com/thermalright/peerless-assassin-120-se-v3Read 14 October 2026Published June 11, 2026: the cooler is available now from the likes of Amazon at the same $37 as the V2.
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-120-se-v3Read 14 October 2026
Air cooler layout
Dual tower1Maker product pagethermalright.com/product/peerless-assassin-120-se-v3Read 14 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-120-se-v3Read 14 October 2026Copper Base: C1100 Pure copper nickel plated.
Thermal paste
Included2Owner's manualdownload.thermalright.com/manuals/PEERLESSASSASSIN120SEV3.pdfRead 14 October 2026Parts list item J: Thermal Grease x1. The steps say to apply thermal grease on the CPU and to remove the protective sticker from the copper base.

Compatibility

CPU sockets
AM5, AM4, LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151, LGA11501Maker product pagethermalright.com/product/peerless-assassin-120-se-v3Read 14 October 2026Intel LGA115X/1200/1700/1851 and AMD AM4/AM5. LGA115X is written as LGA1150, LGA1151, LGA1155 and LGA1156. Komputronik and Newegg style listings name the same four 115x sockets.2Owner's manualdownload.thermalright.com/manuals/PEERLESSASSASSIN120SEV3.pdfRead 14 October 2026Installation sections for AMD AM4/AM5, Intel 115X/1200 and Intel 1700/1851.
RAM height clearance
Not available
Offset mounting
Not available

Heatsink

Heat pipes
61Maker product pagethermalright.com/product/peerless-assassin-120-se-v3Read 14 October 2026Heat pipes: 6 mm heatpipe x 6 units.
Heat pipe diameter
6mm1Maker product pagethermalright.com/product/peerless-assassin-120-se-v3Read 14 October 2026
Direct-contact heat pipes
Not available

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-P1212022,00070.842.6329.8Fluid dynamic (FDB)4-pin PWM
Source1Maker product pagethermalright.com/product/peerless-assassin-120-se-v3Read 14 October 2026TL-P12 FAN Spec: 120 x 120 x 25 mm, rated speed 2000 RPM +/-10% (MAX), noise 29.8 dBA, air flow 70.84 CFM (MAX), air pressure 2.63 mm H2O (MAX), 4 pin PWM connector, S-FDB bearing. The page does not state the fan count or a minimum speed. S-FDB is stored as fluid dynamic, which is how 3DNews and PCGamesN describe it.2Owner's manualdownload.thermalright.com/manuals/PEERLESSASSASSIN120SEV3.pdfRead 14 October 2026Parts list item B: Fan x2. Fan Wiring page: a Y-cable joins the two fans to one 4-pin PWM header.
Fans
2

Display and lighting

RGB lighting
No5Retailer pageregard.ru/product/766959/kuler-thermalright-peerless-assassin-120-se-v3Read 14 October 2026Retailer spec table, Lighting: none. Thermalright's fan spec lists no LED line. The Regard sheet is a Russian retailer page, so it is a secondary source.
Lighting standard
Not available
Built-in screen
None1Maker product pagethermalright.com/product/peerless-assassin-120-se-v3Read 14 October 2026The page lists a heatsink and fan 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/PEERLESSASSASSIN120SEV3.pdfRead 14 October 2026The Fan Wiring page shows only the 4-pin PWM CPU_FAN header, plus an ARGB header for ARGB fan models. 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

Dimensions
Not available
Heatsink dimensions
Width125Height155Depth110mm(4.9 × 6.1 × 4.3 in)1Maker product pagethermalright.com/product/peerless-assassin-120-se-v3Read 14 October 2026Published as L125 x W110 x H155 mm (Without Fan). L runs across the fins and W along the airflow of this dual-tower cooler, so width 125, depth 110 and height 155.
Weight
Not available
Heatsink weight
Not available

In the box

In the box
Heatsink x1, Fan x2, Fan Y-cable x1, AM4/AM5 bracket x2, Intel bracket x2, LGA1700/115X back plate x1, Fan clip x4, 115X/1200 standoff x4, Intel screw x4, Thermal grease x1, AM4/AM5 standoff x4, AM4/AM5 screw x4, 1700 standoff x42Owner's manualdownload.thermalright.com/manuals/PEERLESSASSASSIN120SEV3.pdfRead 14 October 2026Parts list of the Installation Guide for the Peerless Assassin 120 SE V3 Series, items A to N, quantities as printed.

Warranty

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

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Sources

We read 5 sources for this CPU cooler. The numbers match the markers in the sheet.

  1. Read 14 October 2026Backs 11 fields
  2. Read 14 October 2026Backs 6 fields
  3. Read 14 October 2026Backs 2 fields
  4. Read 14 October 2026Backs 1 field
  5. Read 14 October 2026Backs 1 field

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