I recently built my own PC and I've noticed that my CPU temperature spikes to around 100°C during heavy workloads. I've manually set the fan speeds to 100% using Fan Control, but it doesn't seem to help. Here's what I'm working with: my case is an NZXT H7 Flow, I have an Intel Core Ultra 265K processor, and I'm using an Arctic Freezer 36 cooler. For airflow, I've got three Arctic P12 Pro fans at the front and one at the back, though they do get pretty loud. Given that my CPU has a TDP of 125W (though it can draw closer to 250W under load), I feel like my setup should be sufficient to prevent overheating. What steps can I take to troubleshoot or readjust my cooling system?
5 Answers
You might want to verify the thermal interface as well. Good thermal paste coverage is key, and don’t forget to peel off the plastic from the CPU when installing!
First, you should double-check that your CPU cooler is installed correctly. Make sure there’s no protective plastic on the heatsink and that the thermal paste is evenly applied. That cooler, although rated for 125W, may struggle since the 265K can actually pull around 160W under load. If everything looks good, consider upgrading to a larger cooler, maybe a dual tower like the Thermalright Phantom Spirit for better cooling performance.
Also, make sure you're using the right amount of thermal paste. It could be that you're underdosing it, which would definitely affect the cooling efficiency.
Keep in mind that running a single tower cooler on a 250W CPU isn’t realistic. You might want to look into investing in a dual tower cooler for about $36, or a 360mm AIO for around $60 to really avoid thermal throttling. Also, consider adjusting your fan curve; lower speeds can sometimes be more effective.
I’d recommend reseating the cooler and reapplying thermal paste using the method suggested by Arctic. It can make a difference in performance!
Yeah, I've heard that cooler should handle up to 250W. Just make sure you’ve applied enough thermal paste; sometimes more is better if you think it was a thin layer.