Will this reduce noise on my RX 7900 XTX during AI workloads?

Yes. Stock RX 7900 XTX air coolers run at 45-65 dBA under sustained AI inference loads (Ollama, Stable Diffusion, ComfyUI). A full-cover waterblock like this mounted to a 360mm radiator typically reduces noise to under 30 dBA while also lowering VRAM temperatures from 90°C+ to 60-70°C, preventing throttling during long generation runs.

What else do I need for a complete water cooling loop?

A complete custom loop requires: this GPU waterblock, a radiator (360mm recommended for single GPU, 480mm for GPU+CPU), a D5 or DDC pump with reservoir combo, G1/4 fittings, tubing, and premixed coolant. FormulaMod sells complete kits starting at $249 USD including pump, radiator, and fittings.

Does this waterblock cover the VRAM and VRM chips?

Full-cover waterblocks cool the GPU die, VRAM modules, and VRM components simultaneously via a single block with an integrated cold plate. This is essential for AI workloads where sustained 100% VRAM utilization can cause memory junction temperatures to exceed 110°C on air cooling. The full-cover design distributes coolant flow across the entire PCB thermal zone.

1 7

Bykski GPU Water Block For XFX RX 7900 XTX Speedster Merc 310 / 7900 XT Pro 24G / Vastarmor RX 7900 XTX, Full Cover With Backplate PC Water Cooling Cooler, A-XF7900XTX-X

$158.33 USD

Sale Sold out

Taxes included. Shipping calculated at checkout.

Lighting system RBW(5v 3pin)

GPU block option With backplane

Extra option None Additional light controller (optional for without light sync)

SKU:A-XF7900XTX-X_RBW

The Bykski A-XF7900XTX-X full-cover water block fits XFX RX 7900 XTX Speedster Merc 310, 7900 XT Pro 24G, and Vastarmor RX 7900 XTX variants. With 24GB VRAM and 355W TDP, AMD's flagship enables 70B parameter local LLMs via ROCm—making silence and sustained thermal headroom essential, not optional.

Silence for Home AI Rigs: Stock AIB coolers and the reference blower push 45-55 dBA under sustained 355W inference loads. This water block drops operating noise below 30 dBA, transforming bedroom or home office AI workstations into actually livable spaces.

VRAM Protection & 24/7 Reliability: GDDR6 modules throttle when junction temperatures climb during hours-long inference sessions. Full-coverage cooling presses directly on VRAM, VRM, and GPU die—eliminating thermal throttling and ensuring continuous stability for multi-day training or batch generation tasks.

Multi-GPU Necessity: Dual RX 7900 XTX configurations (700W+) exceed practical air cooling limits in standard cases. Water cooling is the only viable path to dense, local AI compute without rack infrastructure. Nickel-plated copper construction, G1/4 threading, integrated aluminum backplate. Ships worldwide.

Frequently Asked Questions

Is this waterblock compatible with my RX 7900 XTX?

This Bykski waterblock is designed for the RX 7900 XTX. 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 RX 7900 XTX be with water cooling?

Stock RX 7900 XTX 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 355W 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 RX 7900 XTX?

355W TDP under AI load

24GB VRAM (throttles at 92°C)

<30dB With water cooling

- 355W sustained = reference blower + dual-fan AIBs all noisy
- 24GB VRAM enables 70B LLMs for ROCm users; waterblock extends thermal headroom
- Reference-PCB AIB cards compatible with full-cover blocks

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

View full details

Country/region

Language

Bykski GPU Water Block For XFX RX 7900 XTX Speedster Merc 310 / 7900 XT Pro 24G / Vastarmor RX 7900 XTX, Full Cover With Backplate PC Water Cooling Cooler, A-XF7900XTX-X