Granzon Full Armor GPU Block For INNO3D GeForce RTX 4090 Ice Dragon Super Version, Full Coverage Full Wrap Cooling Armor, GBN-ICH4090
Granzon Full Armor GPU Block For INNO3D GeForce RTX 4090 Ice Dragon Super Version, Full Coverage Full Wrap Cooling Armor, GBN-ICH4090
SKU:GBN-ICH4090
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The Granzon GBN-ICH4090 is a full-coverage water block purpose-built for the INNO3D GeForce RTX 4090 Ice Dragon Super, engineered specifically for local AI workloads—Stable Diffusion, LLM inference, and multi-GPU training rigs that run for hours or days, not minutes.
Stock triple-fan coolers scream at 50–60 dBA under 450W sustained AI load—untenable for bedroom or home office setups. This full-wrap armor drops noise below 30 dBA while pressing liquid-cooled copper directly onto every GDDR6X module, eliminating the 90°C+ VRAM junction throttling that cripples 24/7 inference performance.
For builders running dual RTX 4090s (900W+) in a single case, air cooling is physically impossible—this block enables true multi-GPU AI workstations. It also serves as a thermal reset for aging cards with degraded factory pads, restoring sustained boost clocks under continuous load.
Nickel-plated copper construction, G1/4 standard threading, integrated aluminum backplate for VRAM cooling. Ships worldwide.
Frequently Asked Questions
Is this waterblock compatible with my RTX 4090?
This Granzon 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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