I built my first desktop about two years ago and recently replaced my motherboard. This got me thinking about my system temperatures again. I'm using the Montech AIR 903 MAX case, equipped with three 140mm front intake fans (Noctua NF-P14s redux-1500 PWM), two top fans (intake at the front and exhaust at the back), plus one rear exhaust fan (Noctua NF-P14r redux-1500 PWM). My CPU is a Ryzen 7900X with a D15 cooler and dual NF-A15 HS-PWM fans. On the graphics side, I have a Radeon 7800XT. Lately, my idle temps hover around 47°C, normal usage sits at about 60°C, and gaming temps reach between 80-88°C. Is it unreasonable to expect idle temps below 40°C without any fans running? If not, what should I be aiming for? I'd prefer a setup where no fans run during light usage and kick in only for gaming. Is that feasible?
3 Answers
Honestly, your temps aren't bad at all. An idle around mid-40s is typical for a hotter CPU like the 7900X. Most of us consider that pretty normal. Expecting it to go below 40°C without any fans is a bit of a stretch, especially since your CPU is designed to boost based on its thermal limits. However, if you're really worried, maybe look at tweaking your fan curves or undervolting options to balance performance and temps.
I think idle temps are less important to worry about compared to those gaming numbers. Hitting 88°C while gaming is definitely on the higher side. Check what thermal paste you’re using; that can make a difference too! Implementing some fans is better than no cooling at all during idle, as it will help extend the lifespan of your components.
For sure, cooling is key. I mean, it's good to be aware of dust and noise, but you don't want to risk overheating in the long run.
If you want to manage temps better, consider undervolting using a curve optimizer. Also, remember that PBO (Precision Boost Overdrive) is usually enabled by default, and turning it off can cool things down but at the cost of some performance. Adjusting your fan settings can definitely help keep them quieter until things heat up.
What’s the max temp that’s okay for the 7000 series? I’m aware they can handle high temps, but I’d prefer not to be running it that hot if I can avoid it.
Yeah, I get why you're aiming for less fan noise, but having zero fans at idle might not be practical. You could adjust your fan curves to be quieter during light use without completely shutting them off.