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Ryzen 5800x WHEA errors

Donnie Fisher said:
Sounds promising. I spent more time with mine last night as well. I’m beginning to lean towards it being a power delivery quirk when the processor is down stepping. Apparently the 5000 series can momentarily draw a high spike of current when they step down which can trip the vrm protection, leading to a hardware error being flagged. Older boards like mine were not aware the spike, so more likely to trip.

The solution possibly being to one of the increase the Pbo limits so that it doesn’t trip. I’m still messing about to find a happy medium.

this might explain why I see the crashes at lighter loads and not when running stress tests.
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I have my PBO settings set to 280, 200, 200. That's just to start, better more than not enough, I will fine tune them a bit further down the line as hwinfo shows you what it's using out of that lot, I'll run an extreme benchmark like IBT and then just add a tiny bit more to what hwinfo is reporting being used on the PPT, EDC, etc
 
In the interests of time ( which I don't have much of at the moment ), I've given up a wee bit on it. Turned off CPB and PBO and just set the multiplier to x44. For my setup, that seems to hold all cores around 4400 / 82°C under cinebench load with score around 14700. Apex seems to run fine without crashing, and other programs fly along, and the computer is quiet during normal working where it sleeps the cores and idles around 35°C.

To me, its good enough, more than fast enough, so I'll stick with that for now!
 
Donnie Fisher said:
In the interests of time ( which I don't have much of at the moment ), I've given up a wee bit on it. Turned off CPB and PBO and just set the multiplier to x44. For my setup, that seems to hold all cores around 4400 / 82°C under cinebench load with score around 14700. Apex seems to run fine without crashing, and other programs fly along, and the computer is quiet during normal working where it sleeps the cores and idles around 35°C.

To me, its good enough, more than fast enough, so I'll stick with that for now!
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To be honest, I was getting to that stage, and that's fair enough, I know the feeling, I work 16 hour days so only get an hour in the morning and in the evening, 2 days off a week so I'm very limited for time too, if it didn't behave itself last night, I'd of taken the same path as you and you're only losing out on about 300mhz single core speed, you won't even notice that in real world usage.
 
Yup - had one last mess around with CPB and PBO again, and I dont know where I'm going wrong following other examples and trying for myself, but it always seems to perform worse than just locking the multiplier to x44 ( i can sustain x44.5, but 44 seems the sweet spot sitting just back from the limit ).

With PBO on etc, it would max at 4200 on all cores, lower cinebench scores and crash in games etc. So thats it. Its locked in and it can stay that way. I certainly dont feel that I'm down on performance in any apps I use, so thats fine by me. Good luck with yours.
 
Wasn't this happening for everyone with nvme drives on launch? It was then fixed via a bios or driver update for me?
 
I finally cracked it in the end, 2 full days of testing, curve optimizer is a nightmare to do per core, but got there in the end, obviously core 0 is my best core, so it wont optimizer much more than it is already, RAM is on XMP with tweaked timings, and then I have an all core overclock of 4.7ghz above 50amps and +150mhz on the PBO side of things, so 5ghz max CPU on light loads.

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Cyber-Mav said:
If its not stable at stock then RMA it. Zen 3 has high failure rate so its expected to just rma for replacement
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+1 I wouldn't even bother trying to tweak it to save face for amd, a cpu should be 110% stable at stock - it's **** poor that so many are not
 
wasnt the fault of the cpu in the end, it was either the fabric or my RAM, anyway seems as all my ram sticks are the same, right down to the ICs used on each stick, I took 1, downloaded the SPD data and XMP data off it and flashed the other 3 with the same data, so now they are basically a quad matched kit.
 
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