Granzon
Granzon GBN-IG4090ZF Full-Armor GPU Water Block + Backplate for Colorful Tomahawk GeForce RTX 4090 NB EX-V, G1/4
Granzon GBN-IG4090ZF Full-Armor GPU Water Block + Backplate for Colorful Tomahawk GeForce RTX 4090 NB EX-V, G1/4
TL;DR: The GBN-IG4090ZF is Granzon's full-armor solution for the Colorful Tomahawk GeForce RTX 4090 NB EX-V. Granzon is the premium sub-brand within the Bykski portfolio, distinguished by a base and top fully wrapped in black anodized aluminum armor over a nickel-electroplated high-purity copper cold...
Common Applications
The GBN-IG4090ZF is Granzon's full-armor solution for the Colorful Tomahawk GeForce RTX 4090 NB EX-V. Granzon is the premium sub-brand within the Bykski portfolio, distinguished by a base and top fully wrapped in black anodized aluminum armor over a nickel-electroplated high-purity copper cold plate. The cold plate covers the AD102 GPU die, GDDR6X memory and VRM stage in a single assembly. G1/4 threaded inlet and outlet ports allow serial or parallel chaining in multi-block loops. The block ships without an RGB light strip; the focus is on the armored aesthetic and long-term build quality.
Frequently Asked Questions
Q: What is Granzon and how does it differ from standard Bykski blocks?
A: Granzon is Bykski's premium sub-brand. The GBN-IG4090ZF uses the same nickel-plated copper cold plate technology but adds a full black anodized aluminum armor shell on both sides for a cleaner aesthetic and added stiffness.
Q: Which RTX 4090 card does this block actually fit?
A: Colorful Tomahawk GeForce RTX 4090 NB EX-V exclusively. The PCB layout is specific to that SKU; do not install on iGame Vulcan, Neptune, Advanced OC, or Battle Axe variants.
Q: What materials contact the coolant?
A: Nickel-electroplated high-purity copper cold plate. The aluminum armor is dry-side only and never touches coolant, so the loop itself remains copper-compatible.
Q: What port size does it use?
A: G1/4 threaded inlet and outlet. The high-flow internal geometry supports chaining multiple GPU blocks in series or parallel.
Q: What is in the box and is RGB included?
A: Full-cover water block, front and back armor plates, two stop fittings, mounting hardware, and thermal grease. No RGB strip is included, and English instructions are not provided.
