Thermaltake Pacific W4 RGB CPU Water Block Review

Today we will be taking a quick look at the Thermaltake Pacific W4 RGB CPU water block. It’s aimed at the watercooling enthusiasts who wants a CPU water block that can offer RGB lighting. The RGB lighting is powered by a special engineered LED giving you 256 colors. It also features a 0.15mm internal fin construction, copper base design, anti-corrosive nickel plating, a high-quality PMMA cover, and comes ready with G1/4 ports.



RGB is now the latest trend and it’s every where. You just can’t get away from it. Some hate it … some love it, and I have to admit, I’m a sucker for anything that’s flashy … I just love it!

Aesthetics and looks is one thing, but one must also consider the cooling performance of any CPU water block. Last month we reviewed the Thermaltake’s Pacific W3 CPU water block. It was a nice-looking water block that feature a high-quality see-through PMMA cover. It compared very well against the king of CPU water blocks … the XSPC RayStorm Pro, but fell short in some areas. Let’s see how well the Thermaltake Pacific W4 RGB CPU water block can do in terms of cooling performance.


The Thermaltake Pacific W4 RGB CPU water block does not feature a clear PMMA cover like the Pacific W3, instead the entire top of the PMMA cover is covered. Only the edge of the PMMA is exposed, giving you a “ring effect” for the RGB lighting.  I see what Thermaltake’s doing … Riing Riing!!  It will match perfectly with any Thermaltake LCS products that uses their Riing fans 😉

I’ll be testing the Pacific W4 RGB CPU waterblock on our Project Core Arancio which is built around an ASRock Fatal1ty X99 Killer 3.1 motherboard with a Core i7-6800K processor.


Here’s a little more blurb taken from Thermaltake’s website.

Our Mission – Delivering the perfect user experience

Every myth starts out as a dream, and at the beginning of every legend is a desire. The challenging, creative and competitive features of the Thermaltake Group offer an exciting and fascinating user experience that can be shared by everyone, while allowing users to transcend themselves in terms of function and potential.

Thermaltake Group’s three main brands—Thermaltake, Tt eSPORTS and LUXA2—have been merchandising high-quality products throughout the world, successfully establishing firm footholds in six major markets, including Europe, America, Oceania, Japan and China, with 95 regional distributors and more than 4,000 premium retailers.



All product planning is governed by close observation of the global PC peripheral market, and by keen understanding of consumer demands. Thermaltake creates direct contact opportunities with resellers and consumers by participating in major global ICT exhibitions and trade shows every year, and by developing innovative marketing strategies for the promotion of new products. Meanwhile, Thermaltake has incorporated a composite marketing system by making branch offices and regional distributors both the distribution channel and the technical support or service center, thereby providing customers access to instant support. By maintaining close contact with end users, we have managed to strengthen our corporate competitiveness and create momentum for the kind of growth that generates major accomplishments.

Marked by outstanding technical depth and organizational strength, Thermaltake Group is currently recruiting creative talent to join us to build a world-class cultural brand for the enjoyment of entertainment, e-Sports, technology and enhanced lifestyle choices!


Let’s dive straight in and start with specifications and features of the Thermaltake Pacific W4 CPU waterblock.




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About Winston 3129 Articles
Winston has over 20 years of experience in the I.T. Industry. He launched Funky Kit with the aim to capture a wider audience worldwide. His knowledge in PC hardware is very distinguished, not only publishing enjoyable reviews but also writing great articles.