Bykski GPU Water Block For Colorful iGame RTX 4090 Vulcan OC / Neptune OC, Full Cover With Backplate PC Water Cooling Cooler, N-IG4090VXOC-X
Bykski GPU Water Block For Colorful iGame RTX 4090 Vulcan OC / Neptune OC, Full Cover With Backplate PC Water Cooling Cooler, N-IG4090VXOC-X
SKU:N-IG4090VXOC-X_RBW
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The Bykski N-IG4090VXOC-X is a full-coverage water block purpose-built for the Colorful iGame RTX 4090 Vulcan OC and Neptune OC — the 450W flagship powering local LLMs, Stable Diffusion, and Ollama deployments. Stock triple-fan coolers scream at 50-60 dBA under sustained AI inference; this block drops noise below 30 dBA, transforming bedroom and home-office rigs into silent workstations.
VRAM protection is non-negotiable for 24/7 workloads. The RTX 4090's 24GB GDDR6X junction temperatures spike past 90°C during hours-long model training or batch generation, triggering aggressive throttling. Bykski's precision-machined cold plate presses directly onto every memory module, VRM, and the AD102 core — eliminating thermal bottlenecks that cripple inference throughput.
Running dual 4090s for larger model parallelism? Two 450W GPUs in one case is physically impossible to air-cool. This block integrates into a unified loop, delivering the sustained thermal headroom that multi-GPU AI setups demand. For used cards, installation performs a complete thermal reset — replacing degraded factory pads with fresh, high-conductivity contact.
Nickel-plated copper construction. G1/4 standard threading. Integrated aluminum backplate for PCB rigidity. Ships worldwide.
Frequently Asked Questions
Is this waterblock compatible with my RTX 4090?
This Bykski waterblock is designed for the RTX 4090. Check the product title for specific card brand compatibility — non-reference PCB designs (ASUS Strix, MSI Suprim, etc.) require model-specific blocks. Reference/Founders Edition cards use a different block.
How much quieter will my RTX 4090 be with water cooling?
Stock RTX 4090 coolers run at 45-65 dBA under sustained AI workloads like Ollama or Stable Diffusion. A full-cover waterblock reduces noise to under 30 dBA — quieter than a refrigerator. VRAM temperatures also drop from 90°C+ to 60-70°C, preventing thermal throttling during long inference sessions.
What else do I need for a complete loop?
Besides this waterblock, a complete custom loop needs: a radiator (360mm minimum for 450W TDP), a D5 or DDC pump with reservoir, G1/4 fittings (8-12 pieces), tubing (soft or hard), and coolant. FormulaMod carries all components — browse our AI Workstation Cooling collection for complete setups.
Can I run this 24/7 for AI inference?
Yes. Water cooling is designed for sustained loads, unlike air coolers which rely on fan speeds that create noise. A properly maintained loop can run 24/7 indefinitely with coolant changes every 12-18 months.
Does FormulaMod ship to the USA and Europe?
Yes. We ship worldwide from our Shenzhen warehouse. USA and EU orders typically arrive within 7 days. All products are covered by our return policy.
Why Water Cool the RTX 4090?
- 24/7 Stable Diffusion inference pushes VRAM to 90°C+ junction; full-cover waterblocks eliminate throttling
- Dual-4090 builds (900W total GPU) are physically impossible in normal cases without water cooling — 3-slot air coolers block each other
- The #1 used-GPU-to-waterblock conversion target — buyers snagging secondhand 4090s want silent 24/7 AI rigs
Full-cover water blocks cool GPU die + VRAM + VRM simultaneously — unlike air coolers that only target the GPU die.
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