Watercooling Temps to high?
Watercooling Temps to high?
Hello Guys,
I have an i9 7900x that I pretested at 4.6Ghz with 1.2V. I also purchased a custom water cooling from EKWB. I assembled it, filled it, and have been running it for about two months now. I'm not sure if the temperatures are within acceptable ranges. I measured the CPU using Prime95 Custom test with 1344 FFTs after an hour, and the average temperature was around 85°C. When playing Battlefield 1, the CPU stays at about 70°C, while the GPU runs at roughly 1080 TiF from an ASUS monitor. In the loop, everything stays between 60-65°C on an ultra display at 3440x1440@100Hz. The system is set to push mode, with Corsair LL Series fans running at about 35%. The ambient temperature is around 22-24°C. When it gets to 28-30°C, the CPU rises from 85°C to about 90-95°C.
What do you all think about these temperatures?
PS: The pump is a DDC 3.2 PWM Elite at 30% speed.
Greetings Steven
The temperatures seem acceptable. Prime95 with AVX leads to more than 100% CPU usage, potentially overheating the processor compared to other settings. At 85°C it's still manageable, though your gaming temperatures appear normal. You might achieve better performance with an older Prime95 version that doesn't use AVX. Setting AVX options can limit boosts to around 4GHz when they are available.
What's the reason behind keeping the pump and fans at those specific speeds? Wouldn't it be better to adjust the pump to higher speeds and let it handle the workload, while using the fans only when necessary? PWM control on the motherboard would allow them to operate quietly during low demand and increase airflow when needed.
Why are the pump and fans set at 30% and 35% speed? Shouldn't I set the pump to 80-100% and let it run quietly? Fans should be controlled via PWM curves on the motherboard, allowing them to adjust automatically when needed. I want a quiet PC. I fixed the CPU temperature by following BIOS standards and used an overclocking guide from der8auer. He mentioned that similar settings work for others, though some power adjustments caused my temp to spike to 95°C on average. Now with only 1.2V and 4.6Ghz across all cores, I get a max of 82°C in ambient 28°C. Just need to reseat the GPU block since the full water block is too hot. Thanks for the help!
If your pump is producing significant noise at 100%, it indicates an issue or a lack of sound isolation. DDC pumps operate nearly silently at maximum speed. Using fans in pull mode improves airflow at reduced fan speeds while minimizing noise.
You're essentially reducing the performance of a high-end cooling system and questioning why temperatures remain elevated.
Have you checked with fans and pump running at full capacity during identical conditions to determine if spindle speeds can be optimized for improved cooling?
The pump operates at full capacity continuously, making it impossible to detect any sound with the EVGA CLC 280.