Granzon GBN-RTX4080FE Full Armor Water Block for NVIDIA RTX 4080 Founders Edition, 0.3mm Jet Microchannel, 227x125x27mm

Granzon GBN-RTX4080FE Full Armor Water Block for NVIDIA RTX 4080 Founders Edition, 0.3mm Jet Microchannel, 227x125x27mm

TL;DR: The GBN-RTX4080FE is a full-coverage water block built specifically for the NVIDIA GeForce RTX 4080 Founders Edition reference PCB. The cold plate is nickel-electroplated high-purity copper with a 0.3 mm jet microchannel whose fin area is roughly three times the GPU die footprint, sitting over the...

Common Applications

The GBN-RTX4080FE is a full-coverage water block built specifically for the NVIDIA GeForce RTX 4080 Founders Edition reference PCB. The cold plate is nickel-electroplated high-purity copper with a 0.3 mm jet microchannel whose fin area is roughly three times the GPU die footprint, sitting over the GPU, GDDR6X memory and the VRM stage. The top is POM and the front armor and backplate are aluminum alloy outside the wetted path. Overall dimensions are 227.2 x 125.7 x 27.1 mm at approximately 1.4 kg, with G1/4 ports configurable for parallel or serial multi-GPU loops.

Frequently Asked Questions

Q: Will this block fit AIB RTX 4080 cards?

A: No. The cold plate, hole pattern and armor are cut for the RTX 4080 Founders Edition reference PCB only. AIB cards have different PCBs.

Q: What are the block dimensions and weight?

A: 227.2 x 125.7 x 27.1 mm and roughly 1.4 kg net weight.

Q: What is the cold-plate construction?

A: Nickel-electroplated high-purity copper with a 0.3 mm jet microchannel; the fin area is about 3x the GPU die surface for better heat absorption.

Q: What ships in the box?

A: Full-coverage GPU water block, front armor, aluminum backplate, two stop fittings, thermal grease, thermal pads and mounting hardware.

Q: Are aluminum radiators safe with this block?

A: No. The block is copper with nickel plating; mixing aluminum cooling parts in the same loop will cause galvanic corrosion.