Theadripper 3970x 3rd Gen + Alphacool Eisbaer Pro Aurora 360 ( 95° - 105° )

[3D Interiors]

Hello everyone,

I’m looking for advice regarding the performance of my AMD Ryzen Threadripper 3970X during Corona rendering.

System specifications:

• AMD Ryzen Threadripper 3970X (completely stock, no overclock)
• ASUS ROG Strix TRX40-XE Gaming
• 64 GB DDR4-3200 CL16
• Windows 10 Pro
• Alphacool Eisbaer Pro Aurora 360 (brand new)

My main concern is the very high CPU temperature during Corona Renderer and Corona Benchmark.

During rendering:

• CPU temperature stays between 95 °C and 100°C, occasionally reaching 105 °C.
• CPU Package Power is around 214–220 W.
• Average Effective Clock is only around 3.3 GHz, even though the processor should normally boost much higher under full load.
• HWiNFO reports no Thermal Throttling.

The radiator is mounted at the top of the case in a push exhaust configuration. The pump is running at 100% (DC mode). The cooler was installed by a professional computer service using fresh thermal paste.

Before installing the Alphacool, I used another 360 mm AIO cooler. That cooler also reached around 95 °C, so I replaced it expecting significantly better cooling performance. Unfortunately, with the new Eisbaer Pro Aurora 360, temperatures are even higher.

My questions are:

1. Is it normal for a stock Threadripper 3970X to run at 95–100 °C (sometimes up to 105 °C) during Corona rendering?
2. Could these temperatures be the reason why my Average Effective Clock remains around only 3.3 GHz?
3. What temperatures and effective clock speeds are other Threadripper 3970X users seeing during Corona Renderer?
4. Does anything in these results suggest that my cooling system may not be performing as expected?

Thank you very much for your help!