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Barrow BS-GIG4090-PA Full-Cover GPU Water Block with Backplate for Gigabyte RTX 4090 Gaming OC 24G / Aorus RTX 4090 Master 24G, 5V A-RGB
Barrow BS-GIG4090-PA Full-Cover GPU Water Block with Backplate for Gigabyte RTX 4090 Gaming OC 24G / Aorus RTX 4090 Master 24G, 5V A-RGB
TL;DR: The BS-GIG4090-PA is built against two specific Gigabyte 4090 PCB layouts: the RTX 4090 Gaming OC 24G and the Aorus RTX 4090 Master 24G. The cold plate is a 10mm thick block of pure copper, CNC machined and then nickel plated to resist oxidation, with internal channels sized to the AD102 die and to...
Common Applications
The BS-GIG4090-PA is built against two specific Gigabyte 4090 PCB layouts: the RTX 4090 Gaming OC 24G and the Aorus RTX 4090 Master 24G. The cold plate is a 10mm thick block of pure copper, CNC machined and then nickel plated to resist oxidation, with internal channels sized to the AD102 die and to the surrounding GDDR6X and VRM contact points. A three-layer cold-finger structure increases the wetted fin area around the GPU core so coolant absorbs heat across a larger surface before exiting the block. The block uses G1/4 threaded inlet and outlet ports, ships with a black metal backplate that adds rigidity to the long PCB, and includes a 5V 3-pin A-RGB cable that can be daisy-chained into a motherboard ARGB header for sync.
Frequently Asked Questions
Q: Which Gigabyte RTX 4090 cards does this block fit?
A: Gigabyte RTX 4090 Gaming OC 24G and Aorus RTX 4090 Master 24G. It is not compatible with Windforce, Master Box, or any reference PCB variant.
Q: How thick is the copper cold plate?
A: 10mm thick pure copper, CNC machined with a nickel-plated surface to prevent oxidation in coolant contact.
Q: What is the RGB power requirement?
A: 5V 3-pin addressable RGB, connected via the supplied sync cable. Do not connect to a 12V RGB header.
Q: What components does the block cool directly?
A: GPU core, GDDR6X memory modules, and VRM stages, through the copper cold plate and the included thermal pad set.
Q: What ports are used for inlet and outlet?
A: Standard G1/4 thread on both inlet and outlet. Top and bottom port options allow parallel or serial multi-block configuration.
