Issues with overheating CPU custom loops
Issues with overheating CPU custom loops
About three months back I upgraded my system (CPU, graphics card, motherboard) but didn’t replace the cooling setup at all. My old 2700k was running around 60°C, whereas with the new 7700k I’m hitting 80°C+ when using Prime95. I have a 360mm radiator and just purchased three new TT Riing 12 fans, which didn’t make much difference. I only changed the coolant once and didn’t fully drain it. It idles between 35–40°C, but jumps to the 60s under any load. I suspect the issue might be with the pump or possibly bacteria/algae in the system.
Photos don't reveal much about the loop, can you elaborate on the loop? Are there any pump issues, radiator concerns, or block problems? Is the CPU running at overclocked speeds or its default settings? Which Prime95 version are you using, and is it identical to the one used with the 2700k?
Intel sandy bridge (2xxx series) soldered the IHS directly onto the CPU core, whereas newer models use Intel's inferior thermal paste. This causes it to overheat more than necessary; the main solution is to remove the lid, which can reduce temperatures by about 15-20°C. The videos you mentioned aren't very helpful, so try using a flash camera to capture clearer images due to the lighting conditions.
I would advise warning everyone to stop using their CPU completely. This action is dangerous, likely cancels the warranty, and could damage the device permanently. Be more careful sharing this advice unless it's coming from the original poster. This approach isn't suitable for all users just because they think temperatures are too high... there are better alternatives to explore first. If someone lacks knowledge about BIOS overclocking or manual adjustments, delidding shouldn't be their immediate choice.
I don't believe the problem lies with the thermal paste on CPU's IHS. It seems Prime95 isn't suitable for newer Intel CPUs because it might lead to dangerously high temperatures. Try using the Intel Burn Test instead and check if your temperatures are more normal.
Yes, accurate. Varying versions of Prime95 and configurations may lead to significant heat generation beyond typical 100% CPU use. More information can be found here: