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Square copper CPU water block with LED-lit logo and four colour inserts

Thermaltake

Thermaltake CL-W027-CU00BL-A Pacific W2 Copper CPU Water Block diy cooling

SKU CH-89VZ-19TEC MPN CL-W027-CU00BL-A

Copper CPU water block with .25mm microfin structure, G 1/4 ports, LED logo and four colour inserts for Intel and AMD sockets

  • Compatible socketsIntel LGA: 2011/1366/1155/1156/1150 AMD: FM2/FM1/AM3+/AM3/AM
  • Block dimensions1.11 in x 3.5 in x 3.57 in
  • Cooling block materialCopper
  • Product typeCPU Block
  • Key featuresOptimized .25 mm microfin internal structure Copper Base pla
  • In the boxPacific W2 CPU Waterblock Universal Mounting Brackets & Hard
  • Optimised .25 mm microfins increase heat transfer surface area
  • Copper base plate conducts heat efficiently from the CPU
  • LED back-lit logo with four colour inserts adds customisable lighting
  • G 1/4 thread ports accept standard and rotary fittings easily
  • Universal mounting brackets cover Intel LGA 2011/1366/1155/1156/1150 and AMD FM2/FM1/AM3+/AM3/AM2+/AM2 sockets

Pacific W2 Copper CPU Water Block

The Thermaltake Pacific W2 is a copper CPU water block built for custom liquid-cooling loops. It fits a wide range of older Intel and AMD sockets including LGA 2011, 1366, 1155, 1156 and 1150 plus AMD FM2, FM1, AM3+, AM3, AM2+ and AM2. The block measures 1.11" x 3.50" x 3.57" and uses G 1/4 thread ports for standard or rotary fittings.

Who this suits and who it does not

This block suits enthusiasts maintaining or building a custom loop on the listed legacy platforms. It includes universal mounting hardware for both Intel and AMD brackets, four interchangeable colour inserts for the back-lit logo and a tube of thermal paste. Builders working with newer socket generations cannot use this block and should select a water block that explicitly lists their socket.

Deciding specification

The decisive specification is the socket compatibility list: Intel LGA 2011, 1366, 1155, 1156, 1150 and AMD FM2, FM1, AM3+, AM3, AM2+, AM2. If your motherboard uses any of these sockets, the Pacific W2 will mount directly; if it uses a different socket, the block will not fit.

How it compares

Measured against everything we stock in Heatsinks & Water Blocks, at today’s prices. Recalculated every night.

Price $66.99
Pricier than about 82% of the 609 comparable items (median $15.99).

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Specifications

Product
Brand nameThermaltake
Product linePacific
Model nameCL-W027-CU00BL-A
Product typeCPU Block
Size & build
Block dimensions1.11 in x 3.5 in x 3.57 in
Cooling block materialCopper
Shipping weight0.41 kg
Package size119 × 114 × 48 mm
Compatibility
Compatible socketsIntel LGA: 2011/1366/1155/1156/1150 AMD: FM2/FM1/AM3+/AM3/AM2+/AM2
In the box
In the boxPacific W2 CPU Waterblock
Universal Mounting Brackets & Hardware (Intel/AMD)
(4) Color Plates (Orange/Green/White/Blue)
(1) Thermal Paste
User Guide

Questions about this item

How often should I replace the thermal paste on the copper base plate?

The included thermal paste should be reapplied whenever the block is removed or if temperatures rise after extended use, typically every one to two years.

What flow restriction appears first when running the 0.25 mm microfin channels continuously?

The fine microfin structure creates the primary flow restriction, so a pump with adequate head pressure is needed to maintain flow through the narrow channels.

How much heat does the LED back-lit logo add during all-day operation?

The LED logo draws minimal power and adds negligible heat compared with the CPU load, so it does not affect loop temperatures in any measurable way.

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