AMD Ryzen 5 1600 Idle temps substantially higher after crash

Apr 3, 2018
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Hey everyone, use this forum all the time, first post as this is a pretty unique question. I have an AMD R5 1600 OC'd (and stable through 2 hours of AIDA64) to 3.95ghz at 1.375v. I was recently rendering about an hour long video and left the room for about 15 min, came back and found the system fully frozen. Did a hard reset, everything seemed to be fine, finished my work and moved on. Later the same day I noticed my idle temps via CAM had risen and were fluctuating a lot more. They used to be in the 30-37 deg C range, now they were fluctauting between 37-48 deg C. I haven't had any performance issues but the change is perplexing to me considering it happened after a crash where my machine was sitting there frozen for what could have been 15 min. I reapplied thermal paste and ensured my AIO (NZXT Kraken X52) was tightened appropriately, but the temps stayed high. I reset the OC to normal values and the temps went down slightly but still fluctuating from 30-40 deg C. I've run basic windows hardware diagnostics, couldn't find any issues, and stability tests were fine. Does anyone know what the issue might be or how I could better find the root cause of these different temperatures?
 
Please recheck that CPU/core voltage, there's no way it could reach 1.75v without obvious troubles !!!
At under 4GHz, core voltage should stay under 1.4v at most. Also check voltages at idle, some MBs can keep them too high on idle and also too high at loads.
Which MB do you have and is BIOS updated ?.
 
Apr 3, 2018
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Haha my b, I guess I didn’t press the “3” key hard enough. Fixed that. It’s at 1.375v and it’s an MSI B350 tomahawk plus, bios has been updated to the latest update.
 
Ah, OK I was just wondering. I'm getting same temps since the beginning and they don't get much lower even at idle. It's much more important at high loads, idle was never much of measure of cooling efficiency. See if pump is running at proper speed. When bios is restored it also changes fan and other speeds.
 
Apr 3, 2018
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Im aware, but the fact that they suddenly got higher after a crash like that is concerning to me