The Bykski N-RTX5090FE-SR is a continuous-duty GPU water block and backplate for the NVIDIA GeForce RTX 5090 Founders Edition. The full-coverage block cools the GPU chip, memory, and power stages in one pass.

Built for continuous operation, it features a 9.5 mm T2 copper base with a 0.35 mm floor beneath the GPU chip, 56 microchannels, and a nickel-plated copper top. Electroless nickel plating from 0.001 mm to 0.002 mm prevents corrosion at pressures up to 2 bar. An aluminum backplate reinforces the board against flexing.

Specifications

• Block Material: Nickel-plated T2 copper, nickel-plated copper top
• Backplate Material: Anodized aluminum (not in contact with coolant)
• Dimensions: 234.35 x 121.82 x 22.70 mm (width includes ports)
• Port Thread: G1/4

Compatibility

ONLY Compatible with:

• NVIDIA NVIDIA 5090 - GEFORCE RTX 5090 FOUNDERS EDITION

Parts Included

• GPU water block with backplate: 1
• Thermal paste: 1
• 1.5 mm thermal pads: 5
• 0.5 mm washers: 4
• Spring screws: 4
• Backplate screws: 4
• M2 x 5 mm cross flat head screws: 8
• M1.5 x 4 mm cross flat head screws: 2
• Backplate brackets: 2
• M2 x 3 mm flat head screws: 8
• PCI-E bracket: 1
• M3 x 5 mm flat head screws: 3

Warnings

Warranty is repair or replacement. Returns are accepted within 30 days, no questions asked. A restocking fee applies to every return, with a higher fee for items that have been installed or used.

Installation removes the card's stock heatsink, after which it can no longer be cooled by chassis air. Never power the card without the loop installed and the pump running. Thermal pads go where the block has corresponding raised contact points; the die itself uses thermal paste.

No instructions are included, the installation illustration is in the gallery images. The manufacturer may modify the design, so the delivered product may differ from the images. Qualified users must install it themselves. The manufacturer isn't liable for damage caused by misuse, improper installation, noncompliant operation, or incompatible hardware or fluids. Use constitutes acceptance of these risks.

To view our comprehensive and detailed return policy, please kindly use the link provided below. This link will direct you to all the necessary information regarding our procedures, guidelines, and requirements for returns. You will find everything you need to know about the return process, including eligibility criteria, timelines, and any specific conditions that may apply. Thank you for your understanding and cooperation in this matter. We appreciate your attention to this important information.

Return/Refunds and Restock Fees

To view the full details of our shipping policy, please follow the link below. It includes important information regarding delivery times, available shipping options, and order specifics. If you have any additional questions or require help, feel free to reach out to us. Thank you for taking the time to review our policies.

Shipping and Delivery Policies