PC Processors

[maximummerc]

• AMD 5700 XT Sapphire Nitro+ (with lastest AMD drivers v20.1)
  
• Operating System Windows 10 64bit
• Display Devices 1080p 60hz Samsung 40 inch TV led
  
• Motherboard: Gigabyte B450M Aurora + Bios (latest) F 50
• CPU: AMD ryzen 5 3600
  
• Power Supply Unit: Corsair SF600 Gold
• RAM: 16GB, 3200 ghz

I just bought and built it new. The issue started when the stock cooler was buzzing every 10 seconds or so.  But in general it was pretty loud. I had a look at the temperatures and fan speed using all available means, from the crappy gigabyte smart fan software, to the bios settings, to ryzen master to hwmonitor. It is 100% apparent that the fan rpm spikes up intermittently to 1800-2200rpm (which caused the whine noise) and that Core CO3 (ryzen master) or Core TMPIN02 (starts at 0 so 2 equates to 3rd core) is running 20 degrees hotter than all the other cores. It seems that this temperature anomally was the issue. I used the pre-thermal pasted stock cooler, so i thought perhaps something was up with the way pasted/contacted. So i removed it, scavanged my older 3rd party cooler and very carefully and thoroughly applied new thermal paste, and made sure the flat surfaces made good contact. It's a good cooler. All copper, big quiet fan. I can set the fan speed using a third party dial so that also sorted out any rpm fluctuations. My system is now quiet, thankfully, that buzzing was driving me crazy, BUT core number three is still 20 degrees hotter than the other 5 cores. The 3rd party cooler dropped ALL temperatures by about 5-8 degrees (it is a superior cooler over the stock) BUT the 20 degree difference between that one core vs the other five cores persists? And this is when idling. You will note, below, the other temperatures reach a  range of 40-50 degrees which is normal for my home office room (all my past cpus were similar with that cooler). Is this normal for the 3600 series cpu? Any of you with the 3600 have a single core that is significantly hotter (by 20 degrees) in idle, than the others?

the power draw/use across all cores seem consistent and steady. so its nothing do to do with power draw. I can only think that third core die itself was incorrectly sealed to the heatsink?

I intend to do games testing next. It's possible they drive that 3rd core to burnout temperatures.... which should definitely be grounds for warranty replacement.

• 

[black_zion]

Those aren't CPU core temperatures, each one is a different temperature. For example, on mine, using AIDA64 as a proper reference as it labels them properly, one is motherboard, one is CPU socket, and one is CPU die.

[hardcoregames_]

you should plug the chassis fans into the motherboard headers so they can be controlled and monitored etc

[maximummerc · Accepted solution]

Yes, thanks everyone.

i should have done more reading up. Noob mistake. obviously there won't be a temperature sensor for every core. That "third core" was actually the "main cpu temperature", which became apparent when stressing the cpu and also running ryzen master, as the "third core" and the ryzen master temp report were in sync.

And strangely after running a cpu stress test, which maxed that at 77 degrees, it never reached those heights in idle that i posted again. Now its a breezy 42 degrees on idle. And 50 to 60 degrees when gaming. So thanks everyone who commented, and I hope this noob mistake of mine helps someone else.

cheers

e