I recently upgraded my GPU from a GTX 1080 Ti to an RX 9070 (non-XT), thinking it would reduce heat since the TDP is lower. Before the upgrade, my i9-9900K CPU ran around 61°C while the GPU was at 83°C during high usage in a game, but now the new GPU runs in the 60s while my CPU is spiking to 95°C. I haven't made any other changes aside from the GPU. The old GPU was blower-style, so I didn't realize it was effectively removing heat from the case. My CPU is cooled by a Corsair water cooler with the radiator set behind the front fans in my case. Is the CPU overheating due to a bottlenecking issue, or is there a problem with the cooling? Can I limit CPU performance to manage this heat?
5 Answers
Sounds like it might be time for some maintenance. Reapply thermal paste and clean out your cooler. Also, make sure your case has good airflow since the new GPU is likely pushing hot air around.
I think your case airflow might be restricted now. Upgrade paths like this can inadvertently cause cooling issues. Maybe try a different fan configuration or reconsider your radiator placement.
Your CPU is likely running hotter now because with the new GPU, it's no longer being bottlenecked. The RX 9070 can render more frames, pushing your CPU to work harder, which explains the higher temps. Consider checking if there are any overclocking settings enabled that are making the CPU run at max performance constantly. You might want to tweak some BIOS settings to dial it back a bit or monitor your voltages. It's also a good idea to check that your cooling system is functioning well, especially if it's getting old.
Yeah, definitely keep an eye on the pump and fan speeds too. If they're not working correctly, it could lead to the high temps you're seeing.
You might just need to reduce the CPU's performance through BIOS settings. An undervolt or power limit can significantly decrease temperatures, especially under load.
Check if the AIO cooler is still working properly. After a few years, the pump can wear out, and you'll want to ensure it’s operating optimally. Consider doing a repaste as well; it could help with those temp spikes. Also, undervolting your CPU can be an effective way to manage heat without sacrificing much performance.
Totally agree! Keeping everything clean can make a big difference in cooling efficiency.