Bykski N-ST4090TQ-X-V4 GPU Water Block for ZOTAC Gaming RTX 4090 Trinity / Trinity OC / AMP Extreme AIRO, Nickel-Plated Copper + PMMA, Continuous Usage

Bykski N-ST4090TQ-X-V4 GPU Water Block for ZOTAC Gaming RTX 4090 Trinity / Trinity OC / AMP Extreme AIRO, Nickel-Plated Copper + PMMA, Continuous Usage

TL;DR: The N-ST4090TQ-X-V4 is the V4 Continuous Usage full-cover GPU water block for the ZOTAC RTX 4090 family and several PCB-equivalent partner cards. Verified fitments include the ZOTAC Gaming GeForce RTX 4090, RTX 4090 Trinity, Trinity OC, AMP Extreme AIRO, ZOTAC RTX 4090D and RTX 4090D Trinity, plus...

Common Applications

The N-ST4090TQ-X-V4 is the V4 Continuous Usage full-cover GPU water block for the ZOTAC RTX 4090 family and several PCB-equivalent partner cards. Verified fitments include the ZOTAC Gaming GeForce RTX 4090, RTX 4090 Trinity, Trinity OC, AMP Extreme AIRO, ZOTAC RTX 4090D and RTX 4090D Trinity, plus reference-PCB Manli RTX 4090 and the NVIDIA GeForce RTX 4090 Gallardo. The cold plate is nickel-electroplated high-purity copper, the top is PMMA acrylic for visible flow, and the backplate is black anodized aluminum that never contacts coolant. G1/4 inch ports support series or parallel multi-GPU loops, and the channel design covers GPU core, GDDR6X memory and VRM in one piece.

Frequently Asked Questions

Q: Which ZOTAC RTX 4090 cards fit this block?

A: ZOTAC Gaming GeForce RTX 4090, RTX 4090 Trinity, RTX 4090 Trinity OC, RTX 4090 AMP Extreme AIRO, ZOTAC RTX 4090D and RTX 4090D Trinity, plus reference-PCB Manli RTX 4090 and the NVIDIA RTX 4090 Gallardo. Heavily redesigned non-reference variants may not fit.

Q: What materials are used?

A: Cold plate is nickel-electroplated high-purity copper, top is PMMA acrylic, and the backplate is black anodized aluminum that does not contact coolant.

Q: What is the difference vs older V2 / V3 blocks?

A: V4 is part of Bykski's Continuous Usage line, with material and seal refinements for sustained 24/7 use while retaining the same ZOTAC-family PCB footprint.

Q: Is the lighting 5V A-RGB or 12V RGB?

A: Lighting is 5V 3-pin addressable RGB (RBW). Mixing it with a 12V 4-pin RGB header will damage the LEDs.

Q: Does it support multi-GPU loops?

A: Yes. G1/4 inch ports and a high-flow channel design allow several blocks to be plumbed in series or parallel within a single loop.