Bykski
Bykski N-AS4090TUFOG-X Full Cover GPU Water Block with Backplate for ASUS TUF Gaming RTX 4090 OG / ROG Strix LC RTX 4090 24G
Bykski N-AS4090TUFOG-X Full Cover GPU Water Block with Backplate for ASUS TUF Gaming RTX 4090 OG / ROG Strix LC RTX 4090 24G
TL;DR: The N-AS4090TUFOG-X is cut for the ASUS TUF Gaming GeForce RTX 4090 24GB OG, ROG Strix LC GeForce RTX 4090 24GB and ROG Strix LC RTX 4090 24GB OC, which share the same PCB layout. The cold plate is nickel-electroplated high-purity copper sealed under a PMMA top, with a black anodized aluminum...
Common Applications
The N-AS4090TUFOG-X is cut for the ASUS TUF Gaming GeForce RTX 4090 24GB OG, ROG Strix LC GeForce RTX 4090 24GB and ROG Strix LC RTX 4090 24GB OC, which share the same PCB layout. The cold plate is nickel-electroplated high-purity copper sealed under a PMMA top, with a black anodized aluminum backplate that handles mounting load without touching coolant. G1/4 inlet and outlet are present on both top and bottom edges so the block can be configured for serial or parallel routing in multi-GPU loops, and a 5V A-RGB (RBW) strip is pre-installed with a sync cable for motherboard A-RGB headers.
Frequently Asked Questions
Q: Which RTX 4090 cards is this block validated for?
A: ASUS TUF Gaming RTX 4090 24GB OG, ROG Strix LC RTX 4090 24GB, and ROG Strix LC RTX 4090 24GB OC. Note: this is the OG TUF, not the later TUF non-OG variant which uses a different PCB. ROG Strix (air) uses a separate Bykski block.
Q: What materials touch the coolant?
A: Nickel-electroplated high-purity copper cold plate and PMMA top only. The aluminum backplate is dry.
Q: What lighting voltage does the block use?
A: 5V 3-pin addressable RGB (RBW). Connecting it to a 12V 4-pin RGB header will destroy the LEDs.
Q: What is in the box?
A: One full-cover GPU block, one backplate, two plug fittings, an installation screwdriver, a lighting sync cable, and a Bykski thermal pad set.
Q: What thread size are the ports?
A: G1/4 inch, with ports on both top and bottom edges for serial or parallel routing.
