{"product_id":"barrow-gpu-water-block-for-galax-rtx-4090-metaltop-oc-gpu-card-full-cover-water-cooler-with-backplane-bs-gam4090-pa","title":"Barrow GPU Water Block For Galax RTX 4090 MetalTop OC GPU Card  Full Cover Water Cooler , With Backplane BS-GAM4090-PA","description":"\u003cp\u003eThe \u003cstrong\u003eBarrow BS-GAM4090-PA\u003c\/strong\u003e is a precision full-cover water block engineered for the \u003cstrong\u003eGalax RTX 4090 MetalTop OC\u003c\/strong\u003e and compatible Gainward variants, purpose-built for sustained AI inference workloads that push 450W continuously—not bursty gaming sessions.\u003c\/p\u003e\u003cp\u003eStock triple-fan coolers scream at \u003cstrong\u003e50–60 dBA\u003c\/strong\u003e under sustained LLM or Stable Diffusion loads, rendering home offices and bedrooms unusable. This water block drops operating noise below \u003cstrong\u003e30 dBA\u003c\/strong\u003e while delivering the thermal headroom essential for 24\/7 reliability. Direct copper contact with GDDR6X modules eliminates the \u003cstrong\u003e90°C+ VRAM junction throttling\u003c\/strong\u003e that cripples inference performance on air-cooled cards.\u003c\/p\u003e\u003cp\u003eFor multi-GPU AI rigs—dual RTX 4090 configurations drawing 900W+—water cooling becomes physically mandatory; no air solution exists that can dissipate this density. The included backplate provides structural reinforcement and secondary cooling for rear VRAM, critical when cards run inference for days uninterrupted. Nickel-plated copper construction, G1\/4 threading, full PCB coverage. Ships worldwide.\u003c\/p\u003e\n\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this waterblock compatible with my RTX 4090?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis Barrow 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.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow much quieter will my RTX 4090 be with water cooling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStock 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.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat else do I need for a complete loop?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBesides 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 \u003ca href=\"\/de\/collections\/ai-workstation-cooling\"\u003eAI Workstation Cooling\u003c\/a\u003e collection for complete setups.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I run this 24\/7 for AI inference?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. 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.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes FormulaMod ship to the USA and Europe?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. We ship worldwide from our Shenzhen warehouse. USA and EU orders typically arrive within 7 days. All products are covered by our return policy.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Barrow","offers":[{"title":"With black backplane \/ LRC 2.0 (A-RGB)","offer_id":42326597795976,"sku":"BS-GAM4090-PA_BK","price":143.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0335\/6554\/0488\/files\/2_302846c3-1b1e-4d05-b15c-c64a338c36b4.jpg?v=1780124230","url":"https:\/\/www.formulamod.net\/de\/products\/barrow-gpu-water-block-for-galax-rtx-4090-metaltop-oc-gpu-card-full-cover-water-cooler-with-backplane-bs-gam4090-pa","provider":"FormulaMod","version":"1.0","type":"link"}