Granzon
Granzon GBN-AS4090TUFOG Full Armor GPU Water Block for ASUS TUF Gaming RTX 4090 OG / ROG Strix LC RTX 4090, G1/4
Granzon GBN-AS4090TUFOG Full Armor GPU Water Block for ASUS TUF Gaming RTX 4090 OG / ROG Strix LC RTX 4090, G1/4
TL;DR: The Granzon GBN-AS4090TUFOG is machined for the ASUS TUF Gaming GeForce RTX 4090 OG PCB, which is also shared by the ROG Strix LC RTX 4090 24GB and 24GB OC Edition. The nickel-electroplated high-purity copper cold plate bonds to the AD102 die, GDDR6X memory, and VRM phases in a single full-cover...
Common Applications
The Granzon GBN-AS4090TUFOG is machined for the ASUS TUF Gaming GeForce RTX 4090 OG PCB, which is also shared by the ROG Strix LC RTX 4090 24GB and 24GB OC Edition. The nickel-electroplated high-purity copper cold plate bonds to the AD102 die, GDDR6X memory, and VRM phases in a single full-cover pass. A black-anodized aluminum frontplate and matching backplate dress the build and stiffen the long PCB without contacting coolant. G1/4 top and bottom ports support both parallel and serial flow in multi-block loops, and thermal grease is included for the die contact patch.
Frequently Asked Questions
Q: Which ASUS RTX 4090 SKUs does this block support?
A: ASUS TUF Gaming RTX 4090 OG, ROG Strix LC RTX 4090 24GB, and ROG Strix LC RTX 4090 24GB OC Edition. It does not fit the ROG Strix RTX 4090 air-cooled variants - use the GBN-AS4090STRIX for those.
Q: Is a backplate included?
A: Yes. The kit ships with both a frontplate armor and a backplate armor in black-anodized aluminum.
Q: What fittings and ports does it use?
A: G1/4 inch threaded ports on top and bottom, configurable for parallel or serial multi-block loops.
Q: What thermal interface is in the box?
A: Thermal grease is included for the GPU core. Thermal pads for memory and VRM are pre-applied or included with the mounting hardware.
Q: Are the loop materials safe to mix?
A: Yes - the aluminum armor never touches coolant. The wetted path is nickel-plated copper, so the block is safe in copper, brass, and nickel-block loops.
