B450 Tomahawk shutting down during gameplay after updating BIOS and CPU

Alan J T

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Got to think that it is a overheat problem but just what is getting hot causing the shutdown, Could be the VRM on the board overheating, Depending on what type they are once they hit 60c or so they can lose up to half the power delivery they are capable off, I know they are rated to 105c but what is the power drop off rate when they start to get hot over 55c, Ones on my board never get over 50c as I made sure they got a lot of air flow, before I did the fan swap to what I have now they was getting up to 60c and the Ryzen 9 cpu range are power hogs I know mine can hit 186 watts in power draw.
 

general77155402dc

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Got to think that it is a overheat problem but just what is getting hot causing the shutdown, Could be the VRM on the board overheating, Depending on what type they are once they hit 60c or so they can lose up to half the power delivery they are capable off, I know they are rated to 105c but what is the power drop off rate when they start to get hot over 55c, Ones on my board never get over 50c as I made sure they got a lot of air flow, before I did the fan swap to what I have now they was getting up to 60c and the Ryzen 9 cpu range are power hogs I know mine can hit 186 watts in power draw.
If that is the case then I'd expect the board to shut off while doing stress testing with the CPU and GPU at 100% load but it seems to be crashing only during light-medium gaming where only one component is under load.

I'm wondering if I should just go ahead and RMA the CPU.
 

general77155402dc

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I've discovered that if I change the loadline calibration value on the motherboard to L5 I can force the crash to occur right away with 100% frequency just by loading up a game. The behavior of the crash is identical to the the issue I am having with stock, "auto", motherboard values. It seems like the issue may be related to voltage fluctuations? Is this indicative of a motherboard issue or CPU issue?

I've taken a quick video of the issue I've been experiencing. As you can see the shutdown is immediate and the CPU failure light on the motherboard is lit.

Here is a screenshot a second before the crash - though I doubt HWInfo will show any voltage spikes.
 
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Alan J T

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I've discovered that if I change the loadline calibration value on the motherboard to L5 I can force the crash to occur right away with 100% frequency just by loading up a game. The behavior of the crash is identical to the the issue I am having with stock, "auto", motherboard values. It seems like the issue may be related to voltage fluctuations? Is this indicative of a motherboard issue or CPU issue?

I've taken a quick video of the issue I've been experiencing. As you can see the shutdown is immediate and the CPU failure light on the motherboard is lit.
Ok set load line calibration to number 3 or 4 And it could be then board or the CPU without testing it is hard to say but Looks like I was in close with it being a power deliver problem just not a Overheating one. Load line 3 and 4 should give you a more constant steady load
 

general77155402dc

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Ok set load line calibration to number 3 or 4 And it could be then board or the CPU without testing it is hard to say but Looks like I was in close with it being a power deliver problem just not a Overheating one. Load line 3 and 4 should give you a more constant steady load
I've tried L1, L3, L4, L5 and they all crash. It seems like any setting other than "auto" crashes immediately. Actually, scrap that. Even with default motherboard settings now it crashes instantly so either the issue is getting worse or there is some other issue being triggered when I try and load my save game.
 

Alan J T

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I've tried L1, L3, L4, L5 and they all crash. It seems like any setting other than "auto" crashes immediately.
That sucks as three and four are the more constant power setting, But without a way to test is hard to pin it down to Motherboard or CPU. Guess you could try setting the CPU voltage manually between 1.2500V and 1.3750 that may be enough to stop the problem. as it will keep the voltage constant.
 

general77155402dc

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That sucks as three and four are the more constant power setting, But without a way to test is hard to pin it down to Motherboard or CPU. Guess you could try setting the CPU voltage manually between 1.2500V and 1.3750 that may be enough to stop the problem. as it will keep the voltage constant.
I just set the voltage to 1.25v which limits core frequency to 3700mhz but the game did launch this time without crashing. Trying 1.375v dumps the frequency down to 500mhz with load so it's unusable. Both cases seem untenable long term as I'm missing out on the performance I paid for.

Also, not sure if you noticed my edit above but it seems even stock mobo settings crash now so this static voltage is the only way to launch the game now.
 

Alan J T

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I just set the voltage to 1.25v which limits core frequency to 3700mhz but the game did launch this time without crashing. Trying 1.375v dumps the frequency down to 500mhz with load so it's unusable. Both cases seem untenable long term as I'm missing out on the performance I paid for.

Also, not sure if you noticed my edit above but it seems even stock mobo settings crash now so this static voltage is the only way to launch the game now.
I would say you will need to RMA or replace the Motherboard as looks like it can not supply the correct amount of power needed for that CPU That CPU can pull up to 200 watts at a voltage of 1.375 on a full core load.
 

general77155402dc

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I would say you will need to RMA or replace the Motherboard as looks like it can not supply the correct amount of power needed for that CPU That CPU can pull up to 200 watts at a voltage of 1.375 on a full core load.
I've owned the motherboard for a few years so I'd be surprised it I could RMA it. I'm pretty disappointed the board isn't capable of supporting the CPU as they've released a firmware enabling the CPU.
 

Alan J T

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I've owned the motherboard for a few years so I'd be surprised it I could RMA it. I'm pretty disappointed the board isn't capable of supporting the CPU as they've released a firmware enabling the CPU.
Perhaps but it is a older board and AMD never intended for the 5000 series CPU to run on them. And it is still a Beta bios and a beta Bios with reduced functionality due to the size of the Bios chip
 

general77155402dc

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Perhaps but it is a older board and AMD never intended for the 5000 series CPU to run on them. And it is still a Beta bios and a beta Bios with reduced functionality due to the size of the Bios chip
in any case I appreciate your (and everyone else's help) on this. I've ordered a new motherboard that should solve the issue if the problem is board related.
 

joshg300zx

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I am not trying to jack the thread, since I have my own open.. But this is EXACTLY the same issue I am having with my board but its the Gaming Pro Carbon. 100% identical.. But I am still running the 2700x not the newer CPU's and I see a few mentioning of check the PSU but here is the difference I am running a 1200W PSU so, for the OP to be having identical problems on a lower wattage PSU this has to be a board or Bios problem at this point
 

general77155402dc

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I am not trying to jack the thread, since I have my own open.. But this is EXACTLY the same issue I am having with my board but its the Gaming Pro Carbon. 100% identical.. But I am still running the 2700x not the newer CPU's and I see a few mentioning of check the PSU but here is the difference I am running a 1200W PSU so, for the OP to be having identical problems on a lower wattage PSU this has to be a board or Bios problem at this point
Feel free to jack it. I ended up buying a new motherboard yesterday and was able to load games that previously crashed right away the moment it was installed. It's too early to say my problem is solved but so far so good.
 

joshg300zx

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Feel free to jack it. I ended up buying a new motherboard yesterday and was able to load games that previously crashed right away the moment it was installed. It's too early to say my problem is solved but so far so good.
So it is a possible board issue? My issues are with games like Warzone and Warhammer Vermintide 2.. Also did you have a issue getting it to turn back on? Thats what I am having a issue with now..
 

general77155402dc

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So it is a possible board issue? My issues are with games like Warzone and Warhammer Vermintide 2.. Also did you have a issue getting it to turn back on? Thats what I am having a issue with now..
in my case the best guess was a VRM issue. For you I'm not sure. I did not have issues with my board turning back on - though I did have to toggle the PSU switch to do it.
 

joshg300zx

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in my case the best guess was a VRM issue. For you I'm not sure. I did not have issues with my board turning back on - though I did have to toggle the PSU switch to do it.
Well thats what another guy here is telling me, apparently my VRMs are spiking to 91c... And yes thats what i have to do as well but been doing it for about a year now.. And now it got to a point where I had to flip that switch multiple times to get it powered back on... Also it started when I did a shutdown..
 

general77155402dc

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Well thats what another guy here is telling me, apparently my VRMs are spiking to 91c... And yes thats what i have to do as well but been doing it for about a year now.. And now it got to a point where I had to flip that switch multiple times to get it powered back on... Also it started when I did a shutdown..
well it's possible. If the symptoms are identical then it's very possible it's a VRM issue with yours as well. if you can test the heat theory but somehow keeping your motherboard cool with a fan or something and if the crashes stop while doing so then it might prove one way or another. I think it's unlikely to be a CPU issue so that just leaves the other components. Run memtest on your ram to be sure - though this should cause a BSOD in windows if RAM is the issue - and test another PSU (if able) just in case but other than that I'd say it's the motherboard.
 

Alan J T

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Well thats what another guy here is telling me, apparently my VRMs are spiking to 91c... And yes thats what i have to do as well but been doing it for about a year now.. And now it got to a point where I had to flip that switch multiple times to get it powered back on... Also it started when I did a shutdown..
VRM at 90c is quite high I have mine set to shut down at that temp in the bios. Hotter the VRM get the less power they can supply at about 60c they can be reduced to 50% power delivery depending on type and model. You want to get some air flow over them to keep cooler, Mine never get over 50c and I can push over 186 watts through them to the CPU in a full core Overclock of 4.400MHz @ 1.325v on the V core, And constant overheating may well have damaged the VRM.
 
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