[SOLVED] High idle temps (75 degrees) 5800x

[L10YD357]

Good morning,

A friend of mine has a ryzen 5800x and he's saying that it's idling at 75 degrees constantly on desktop.

Any thoughts?
I'm thinking of reapplying thermal paste to be honest

 

[DuRoC2020]

What cpu cooler? What case? 75 is warm for sure. I hit low 80's on mine in Cibebench with a Noctua NH-d15s. Idles in the 30's.

 

[L10YD357]

nzxt z63. lian li dynamic mini (3 fans in, 3 fans out, 2 fans in from side, 1 side out on rear).

yeah, 75 degrees just idling on desktop. i found out now that the voltage is being pumped at 1.457v constantly. i've had him reset bios - still happening

 

[DuRoC2020]

Temps should be as good or better then mine. COD I'm only seeing 65-70 and have a fairly toasty GPU dumping air in the case. Hopefully his pump in the AIO isn't failing.

 

[L10YD357]

Have him running cinebench:

Temps should be as good or better then mine. COD I'm only seeing 65-70 and have a fairly toasty GPU dumping air in the case. Hopefully his pump in the AIO isn't failing.

We'll, it's 75 degrees just on the desktop let alone playing a game. His aio is less than a year old so :/

 

[Nighthawk117]

Good morning,

A friend of mine has a ryzen 5800x and he's saying that it's idling at 75 degrees constantly on desktop.

Any thoughts?
I'm thinking of reapplying thermal paste to be honest

Far too high for idle. Temps should be in the low 50's. Sounds like a cooling problem, what AIO is it? Has it always been like this or just started?

 

[L10YD357]

Reverted back to windows 10 and issue has gone away

 

[Nighthawk117]

Reverted back to windows 10 and issue has gone away

Ah it may not have been 75C in that instance then. What's perhaps more likely is the temp monitoring software isn't working properly with Windows 11 and reporting inaccurate temperatures. I've had this before with an older version of HWMonitor on Windows 10.

 

[L10YD357]

I had him run latest Ryzen master and nzxt cam as have I. Both showed 75 degrees. Bios showed 40

 

[drea.drechsler]

I had him run latest Ryzen master and nzxt cam as have I. Both showed 75 degrees. Bios showed 40

Get rid of Ryzenmaster...it's not really a good software for monitoring. Instead get HWInfo64, about the only monitoring software the properly reports both core clocks and CPU status (VCore and temperatures in particular).

A constantly high temperature is probably not really constant as it seems since the temp peaks really only happen as it boosts. HWInfo will make it obvious.

Another highly likely problem is some background software running that's making the cores boost constantly, hence the 'constant' high temperatures. The NZXT CAM software could be the culprit in addition to Ryzenmaster, even if it's not running. Or something running the system tray or in background...try to eliminate everything you can to see if it goes down.

 

[Karadjgne]

You have a Ryzen. Throw out anything you thought you knew about voltages and temps, as that was based around Intel, which doesn't work for Ryzen.

Single core readings at idle (stock) will always read 1.4v+, higher voltage waiting for the demand hit, but very low amperage. It's only when you engage multiple cores and heavier loads that voltages will drop to an operating level and that's when amperage skyrockets. W=V*A. With a 95w cpu, and 1.3v (ish) expect to see 70A± to make the wattage. Volts aren't everything.

Also gotta understand Ryzen idle. Intels drop speeds and voltages across all cores but all cores remain active, so any incoming workloads get split up over various cores. You move the mouse and 1 core deals with moving, 1 core with positioning, 1 core with graphical nature etc. With Ryzen at idle, all cores go to sleep, inactive, accept 1. That single core sees the entire workload, so runs hotter. It's not representative of the cpu as a whole. Just 1 core. That 1 core deals with graphics, positioning, movement of the mouse. So seeing a Ryzen idle at 70°C is not uncommon if there's a hefty background workload. It takes an active workload to wake the rest of the cores, and that idle temp will drop as the load is now shared.

HWInfo64 is good for that, as it sees what All the cores are doing, the temps they are running at, speeds, voltages etc whereas Ryzen Master averages all that into a single number every 3 seconds.