I built a loop.
Not because my temps were bad.
But because at some point I realized I was halfway to building a liquid‑cooled industrial accident, so I just committed fully.

🧊 Specs (clean, technical)

CPU
• AMD Threadripper 9970X
• Bykski CPU‑RAY‑ON‑M block

GPU
• Gigabyte AORUS RTX 5090 Extreme Waterblock (factory full‑cover block)

Motherboard
• TRX50 platform motherboard

Memory
• 128 GB ECC RDIMM

Pump / Reservoir
• Bykski DDC Pump + 220 mm Reservoir (CP‑DDC‑X‑TK220‑V2)
– Integrated temperature display
– DDC motor
– 220 mm acrylic reservoir

Radiators / Heat Exchangers
• VEVOR 20" x 20" Water‑to‑Air Heat Exchanger (3‑row, 242 fins)
• Bykski 360 mm radiators (additional)

Tubing & Fittings
• Bykski hardline tubing
• Bykski fittings

Coolant
• Ultra DP Coolant

Fans
• High static‑pressure PWM fans

🔥 Thermals

y‑cruncher 25B @ 33%:
• CPU Tctl/Tdie: ~89 °C max
• CCDs: 62–71 °C
• IOD hotspot: ~61 °C
• PPT peak: ~465 W
• Throttling: none
• Loop remains stable under long‑duration AVX load

PassMark CPU Mark:
• 20 000+

💦 General observations (updated correctly)

• The CPU block is not too small — it fully covers the TRX50 IHS
• The only difference vs. TR‑specific blocks is microfin layout, not physical size
• Real‑world performance shows no disadvantage
• The Gigabyte Extreme WB GPU block is a monster and performs flawlessly
• The VEVOR heat exchanger does serious heavy lifting in this loop
• The system stays stable even under extreme long‑duration AVX workloads (25B y‑cruncher)
• Ultra DP coolant keeps temps and flow consistent
• The build is absolutely overkill — exactly as intended
• Zero regrets

**“The chassis uses a two‑compartment layout. All components sit in the upper chamber, while the lower chamber contains a radiator dedicated to cooling the internal case air. Warm air from the top is pulled down through that radiator, cooled in the lower section, and then pushed back up into the component area. This creates a closed internal airflow loop that keeps the RDIMMs and VRM supplied with consistently cool air during demanding workloads like y‑cruncher 25B.

The component cooling is completely separate from this system: the CPU and GPU run on a full custom water loop that’s cooled by a 500×500 mm Vevor industrial heat exchanger. So the water loop handles the heavy thermal load from the 9970X and 5090, while the lower‑chamber radiator — driven by a small fishtank pump — keeps the case air itself cooled and stable.”**

Specs:
• CPU: AMD Threadripper 9970X
• Cooling: Full custom loop (large radiator capacity + high‑flow pump)
• CPU block: Bykski CPU‑RAY‑ON‑M
• GPU: RTX 5090 Extreme WB
• RAM: ECC RDIMM 6400 MT/s
• Motherboard: TRX50
• Storage: NVMe
• PSU: ATX 3.1 unit

Cooling notes:
Even though the CPU block isn’t designed for TRX50’s large IHS, the loop handles the 9970X extremely well. Temps stay stable under heavy loads like Cinebench and y‑cruncher. No throttling, no hotspot spikes — the loop’s capacity completely compensates for the block’s smaller coldplate.

Performance:
• Cinebench R23 MT: ~85K
• CPU‑Z MT: ~35K
• CPU‑Z ST: ~870
• y‑cruncher 25B: 229.846 s