How does the Phanteks Glacier EZ-Fit G40 GPU block enhance cooling performance for the RTX 4090?

It features a 10mm pure copper block that directly cools all memory and power delivery components, with a fine 0.6mm fin array and a clear jetplate positioned over the GPU die for optimal heat transfer.

What materials are used in the construction of the Phanteks Glacier EZ-Fit G40 GPU block?

The GPU block is made of a copper base that is nickel plated, with an acrylic cover and aluminum covers in matte white.

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Alt view image 2 of 4 - Phanteks Glacier EZ-Fit G40 ASUS GPU Block for ASUS ROG STRIX / TUF gaming RTX 4090, Full Cover Nickel-Plated copper block, Cast Acrylic, Aluminum Cover plates, Digital-RGB, Black

Alt view image 3 of 4 - Phanteks Glacier EZ-Fit G40 ASUS GPU Block for ASUS ROG STRIX / TUF gaming RTX 4090, Full Cover Nickel-Plated copper block, Cast Acrylic, Aluminum Cover plates, Digital-RGB, Black

Alt view image 4 of 4 - Phanteks Glacier EZ-Fit G40 ASUS GPU Block for ASUS ROG STRIX / TUF gaming RTX 4090, Full Cover Nickel-Plated copper block, Cast Acrylic, Aluminum Cover plates, Digital-RGB, Black

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Phanteks Glacier EZ-Fit G40 ASUS GPU Block for ASUS ROG STRIX / TUF gaming RTX 4090, Full Cover Nickel-Plated copper block, Cast Acrylic, Aluminum Cover plates, Digital-RGB, Black

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Custom-designed for the ASUS ROG STRIX / TUF gaming RTX 4090 graphic cards
Unlock the full potential of the RTX 4090 with high performance water cooling
Milled from a 10mm pure copper block to directly cool all memory and power delivery components
Fine 0.6mm fin array combined with a clear jetplate positioned directly over the GPU die ensures optimal heat transfer
Viton Rubber Washer for retaining seal force and prevent leaks
Low-profile fitting location for better chassis clearance and GPU Support Bracket to prevent sag
Integrated Digital-RGB Lighting with standard JST connectors to allow for expansion and synchronization with all Phanteks D-RGB products and compatible motherboards with Addressable-RGB lighting

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Learn more about the Phanteks PH-GEF_GPU4090AS_DBK01

Model
Brand	Phanteks
Model	PH-GEF_GPU4090AS_DBK01
Type	GPU Water Block

Block
Block Compatibility	ASUS ROG Strix GeForce RTX® 4090 24GB ASUS ROG Strix GeForce RTX® 4090 OC Edition 24GB ASUS TUF-RTX4090-O24G-GAMING ASUS TUF-RTX4090-24G-GAMING
Block Dim.	11.34 x 5.17 x 1 in (288.15 x 131.244 x 26 mm)
Block Material	Copper Base, Nickel plated Acrylic Cover Aluminum Covers (Matte White) Stop Fitting: Acrylic O-ring: EPDM Fitting: Nickel Plated Brass Fitting Insert: ABS

Fan
Color	Black

Additional Information
First Listed on Newegg	August 31, 2025

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Return for refund within: 30 days
Return for replacement within: non-replaceable
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Item#: 9SIBJUTKK68582