MSI X570 Tomahawk Bios Bug - Cant Change Cpu voltage or LLC setting

Thrawn

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Aug 8, 2020
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I've been waiting for MSI to post this as an official BIOS update on their webpage, but it still hasn't happened yet.
Not really sure of all changes but it has increased my bios boot time from 16 seconds to 21 seconds. It seems to get worse with every BIOS update.
Well to be honest, I don't really care about it, there are so many other things that are more important for a motherboard than boot time. Of course it shouldn't take minutes, but a few seconds here and there doesn't really matters.
 

ajweinert

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Well to be honest, I don't really care about it, there are so many other things that are more important for a motherboard than boot time. Of course it shouldn't take minutes, but a few seconds here and there doesn't really matters.
Yes there are plenty of other things more important than boot time, however I also think that when new BIOS is released it should be with improvements all around, not improving in one area and making other areas worse.
 
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Is this supposed to fix the blinking CPU issue? I'm going crazy with this bug.. All my components work.. buy i can't get it to boot.. if i do and when i do get to bios .. i only have a few minutes before it shuts down on me and I have to try the process all over
 

flyingv2815b702e7

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So many weird issues like this lately, and the one common thread is everyone has
a mega-power GPU card, generally just recently purchased. Hmmm. What could it be?
Power problems? My old GTX 950 could draw over 100W just by itself if vsync is off
and its running full out. I know there has been a push for GPUs to use less power
but there is a limit to that when it impacts competitive advantage. Selling product,
not saving power, is more important obviously and mfrs are likely to cheat if needed.

Well get to the bottom of it someday.
 

flyingv2815b702e7

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Sorry if this is inappropriate but we are just brainstorming here.

I have designed and implemented SMPS before. A switching power supply basically
monitors the voltage output and increases or decreases the duty cycle as needed.
You might think that these adjustments should occur as quickly as possible, yes,
but there is some settling time that is needed between adjustments, or you get
an endless cycle of overshoot/undershoot which results in terrible regulation and
unwanted ripple. I developed an algorithm with variable settling time based on
how far away the voltage out was from the desired output. Small differences
need to be adjusted more slowly.

So what happens if the adjustment is too slow? Voltage sag.

Let us also consider that the CPU and GPU are both drawing from whatever 12V rail or rails you have.
Chips can take a LOT of power when they first come up.
There seem to be more problems with no-name PSUs than brand name ones.

Sorry, I just keep reading posts with the debug LEDs doing crazy things.
All these CPUs can't be bad, could they?
 

fatedust

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