First WC Build - 15% GPU OC

[GWTechTalk]

While not typical for most builds, the AMD Radeon RX 7900 XTX is both power-hungry and thermally demanding. I had been considering a custom water-cooling solution for some time, but the cost barrier had always held me back. After finally moving forward with the build, I can confidently say the results justified the investment.

Components​

• Alphacool AIO Quick Disconnect (QD) Hoses – 90° (x2)
• Alphacool AIO Quick Disconnect (QD) Hoses – Straight (x1)
• Alphacool Core 100 Aurora Pump
• G1/4 Temperature Sensor
• Open Air Temperature Sensors (x2)
• Molex PSU Cable
• Aquacomputer Quadro Controller
• RGB Splitters (Generic)
• Cooler Master Vertical GPU Mount
• Corsair Hydro XR5 420mm Radiator
• Bykski Full-Coverage GPU Water Block (Sapphire Pulse 24GB IC flashed to Nitro+)
• Mayhems XT-1 Coolant (1000ml)

This loop was designed exclusively for the GPU. The CPU is cooled separately using an Arctic Liquid Freezer III, which I recently serviced by draining, purging, and refilling.

Performance Results​

The system exceeded expectations, achieving:

• GPU Core Clock: ~3300 MHz
• GPU Memory Clock: ~2700 MHz
• Total Board Power: ~580W

This translated to roughly a 15% performance improvement under load.

Design Approach​

Rather than pursuing a highly aesthetic hardline or clear tubing build, I prioritized simplicity, modularity, and reliability. The Alphacool QD hose system significantly streamlined assembly and maintenance. Each section of the loop can be independently removed, purged, or flushed, which adds a level of flexibility that traditional custom loops typically lack.

The loop was prefilled and air-purged outside the system before installation, reducing the risk of trapped air and simplifying initial startup. Additionally, the layout keeps the cooling components physically separated from most primary electronics. In the unlikely event of a leak, exposure would be limited primarily to the GPU.

While Alphacool’s QD ecosystem is somewhat limited in terms of length and connector customization, the build quality is excellent. If expanded with more sizing options and a smaller connector footprint, it could appeal strongly to users seeking functional, low-visibility water-cooling solutions.

Aesthetic Notes​

The system is intentionally understated, with all components sitting cleanly behind a dark tinted panel. The result is a subtle, refined appearance rather than a showcase-style build.

Software & Monitoring​

The monitoring dashboard was custom-built using Aquacomputer’s software suite, with a tailored XAML layout to display system metrics in a clean and functional format.