• Bykski GPU Water Cooling Block For RTX 3090/3080 Reference PCB, For GALAXY Palit KFA2 Maxsun Leadtek | Water Cooling Block
  • Bykski GPU Water Cooling Block For RTX 3090/3080 Reference PCB, For GALAXY Palit KFA2 Maxsun Leadtek | Water Cooling Block
  • Bykski GPU Water Cooling Block For RTX 3090/3080 Reference PCB, For GALAXY Palit KFA2 Maxsun Leadtek | Water Cooling Block
  • Bykski GPU Water Cooling Block For RTX 3090/3080 Reference PCB, For GALAXY Palit KFA2 Maxsun Leadtek | Water Cooling Block
  • Bykski GPU Water Cooling Block For RTX 3090/3080 Reference PCB, For GALAXY Palit KFA2 Maxsun Leadtek | Water Cooling Block
  • Bykski GPU Water Cooling Block For RTX 3090/3080 Reference PCB, For GALAXY Palit KFA2 Maxsun Leadtek | Water Cooling Block
  • Bykski GPU Water Cooling Block For RTX 3090/3080 Reference PCB, For GALAXY Palit KFA2 Maxsun Leadtek | Water Cooling Block
  • Bykski GPU Water Cooling Block For RTX 3090/3080 Reference PCB, For GALAXY Palit KFA2 Maxsun Leadtek | Water Cooling Block
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Bykski GPU Water Cooling Block For RTX 3090/3080 Reference PCB, For GALAXY Palit KFA2 Maxsun Leadtek Gainward, N-RTX3090H-X-V2

Bykski GPU Water Cooling Block For RTX 3090/3080 Reference PCB, For GALAXY Palit KFA2 Maxsun Leadtek Gainward, N-RTX3090H-X-V2

$131.94 USD
$131.94 USD
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N-RTX3090H-X-V2_RBW

The Bykski full-cover GPU water block for the RTX 3090 replaces the stock blower or open-air cooler with a direct-contact copper cold plate pressed against every major heat source on the card — GPU die, VRAM modules, and VRMs in a single pass.

Running local AI inference continuously pushes GDDR6X VRAM toward the 92°C throttle threshold within minutes on air. Water cooling keeps VRAM well below that ceiling, sustaining full memory bandwidth through long Ollama sessions, ComfyUI queues, and overnight batch jobs.

Drop the loop noise below 30 dBA — quiet enough for a bedroom or shared home office even under 24/7 AI load. Material: nickel-plated copper cold plate, acrylic/POM top. Fittings: G1/4 thread. Ships worldwide.

Why Water Cool the RTX 3090?

350W TDP under AI load
24GB VRAM (throttles at 92°C)
<30dB With water cooling
- CRITICAL: backside GDDR6X memory modules have no heatsink contact on reference PCB — junction temps hit 104-110°C under sustained load, the root cause of the infamous '3090 VRAM throttle at 92°C' — full-cover waterblocks directly resolve this
- Thermal pads on 2-4 year old used 3090s are degraded; installing a waterblock = complete thermal reset, revives ex-mining/ex-gaming cards for AI duty
- 350W sustained for 24/7 Ollama inference = 55 dBA fan noise from the triple-fan FE cooler — unacceptable for home office/bedroom
- Dual-3090 builds (700W total GPU) are the cheapest path to 48GB VRAM for 70B LLMs — water cooling is the only way to fit both in a normal case
- #1 target for FormulaMod — the largest used-GPU waterblock upgrade market in existence

Full-cover water blocks cool GPU die + VRAM + VRM simultaneously — unlike air coolers that only target the GPU die.

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