Is this waterblock compatible with my RTX 4090?

This Astralcooler waterblock is designed for the RTX 4090. Please check the product title for specific card brand compatibility (ASUS, MSI, Gigabyte, etc.) as non-reference PCB designs require model-specific blocks. If you are unsure of your card's PCB variant, contact FormulaMod support at customermanager@formulamod.net before ordering.

Will this reduce noise on my RTX 4090 during AI workloads?

Yes. Stock RTX 4090 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.

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Astralcooler GPU Water Block for NVIDIA RTX 6000 Ada

Name: Astralcooler GPU Water Block for NVIDIA RTX 6000 Ada
Brand: Astralcooler
SKU: AC-GB-NV6000-Ada
Price: 230.52 USD
Availability: InStock

$230.52 USD

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SKU:AC-GB-NV6000-Ada

Astralcooler GPU Water Block for NVIDIA RTX 6000 Ada

Compatible Platforms

NVIDIA RTX 6000 Ada

NVIDIA RTX 5880 Ada

Cooling Location

High-heat components, such as GPU core, memory, power MOSFETs, inductors, and tantalum capacitors.

Cooling Principle

The high-purity oxygen-free copper baseplate of the graphics card water block covers key high-heat components, including the GPU core, memory, power MOSFETs, and tantalum capacitors. The heat absorbed by the water block is then carried away by the flowing coolant.

Water Block Features

High Thermal Conductivity:

The baseplate is made of T2 oxygen-free copper with a thermal conductivity of up to 401 W/m·K, improving cooling efficiency and increasing the heat dissipation area.

High-Density Microchannel Jet Design:

The water channel area is enlarged, with up to 176 microchannels, each with a groove at the bottom. The asymmetrical 5+3 channel configuration (0.5 mm slot width + 0.01 mm pitch) increases the contact area between the coolant and the base plate, thereby improving the cooling efficiency of the water block.

Full Metal Coverage:

The copper plate extends to 157 mm in length, maximizing coolant coverage.

Lightweight Design:

Reduces the weight of the water block and prevents PCB deformation. A more reliable passivation process ensures faster heat conduction while effectively resisting corrosion and wear.

Why Water Cool the RTX 4090?

450W TDP under AI load

24GB VRAM (throttles at 92°C)

<30dB With water cooling

- 450W sustained AI load = 50-60 dBA from the massive triple-fan coolers — unbearable in bedroom/home office
- 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.