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Author Topic: MSI B450 Gaming Pro Carbon high SoC power usage  (Read 564 times)

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alexmuffelTopic starter

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Hello,

HWInfo64 6.09.3855 reports a constant high power usage for the SoC on my AMD 3700x running on a MSI B450 Gaming Pro Carbon of around 20 Watt. Undervolting only the SoC to 1.000V in the BIOS helps a bit but I don't get the nice readouts like shown in https://forums.overclockers.co.uk/threads/3700x-idle-voltages.18860411/ . So when idle the CPU core Power is very low at around 5 Watts but the SoC still adds a constant 20 Watts.

I'm running a fresh install of Windows10 1903, AMD 19.10.16 chipset drivers, latest BIOS version on the B450 (zero issues with blindflashing the BIOS btw :) )
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alexmuffelTopic starter

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Re: MSI B450 Gaming Pro Carbon high SoC power usage
« Reply #1 on: 23-July-19, 11:09:11 »

Could this just be a bug in the UEFI of theB450 Gaming Pro Carbon AC ?
This MSI MEG x570 doesn't seem to have this high Soc Power usage



as compared to me:
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alexmuffelTopic starter

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Re: MSI B450 Gaming Pro Carbon high SoC power usage
« Reply #2 on: 24-July-19, 15:10:20 »

so while my SoC power use is around 19.5W/19.5A the other motherboard (MSI meg x570 Ace) is around 7.4W/6.7A. That's quite a difference don't you think?
Changing powerplans doesn't make a difference for me.

here is a better picture of the x570:
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Nichrome

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Re: MSI B450 Gaming Pro Carbon high SoC power usage
« Reply #3 on: 26-July-19, 05:12:26 »

Hi

HWinfo reports the values incorrectly.
MSI will report this to them to get things fixed.
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Errors are red, My screen is blue .I think I deleted, System32

alexmuffelTopic starter

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Re: MSI B450 Gaming Pro Carbon high SoC power usage
« Reply #4 on: 26-July-19, 09:43:19 »

Thanks for your reply :) 

CMOS clearing /loading defaults for the BIOS didn't help btw (somone at MSI suggested to try this). Aida64 6.00.5100 also gives "wrong" readouts (CPU VDD =29.10A, CPU VDD =29.10W, cpu package 23.47 Watt; CPU Core 0.968V, CPU VID (=Soc) 1.000V) cpu vddNB 2.45 Watt).

I also asked about this on AMD forum, so far at least 1 other person reports the same behaviour:
https://community.amd.com/thread/241604
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Nichrome

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Re: MSI B450 Gaming Pro Carbon high SoC power usage
« Reply #5 on: 26-July-19, 18:48:12 »

My contact from MSI tested this with other tools and told me that hwinfo reads it incorrectly.
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alexmuffelTopic starter

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Re: MSI B450 Gaming Pro Carbon high SoC power usage
« Reply #6 on: 29-July-19, 11:41:53 »

MSI support staff basicly advised to "try it on another motherboard". But I don't have another am4 motherboard over here. Do you know if I could try a beta bios found on your open FTP server in Germany ( http://msi-ftp.de:8080/main.html )? Do you know when the next non-beta bios for the B450 Gaming Pro Carbon AC will be released?
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Nichrome

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Re: MSI B450 Gaming Pro Carbon high SoC power usage
« Reply #7 on: 29-July-19, 14:06:48 »

1. It ain't my FTP server. I do not work for MSI. >>Please read and comply with the Forum Rules.<<
2.  Use BETA at your own risk. No ETAs provided, just not possible.
3. MSI confirmed it's HWInfo not reading things properly :rolleyes: Just said it third time.
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alexmuffelTopic starter

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Re: MSI B450 Gaming Pro Carbon high SoC power usage
« Reply #8 on: 13-September-19, 13:06:21 »

Updating from bios 1.80 to 1.90 resolved the high reported power usage for SoC for me. HWinfo + Adia64 now show around 8-10 Watts for SoC, I think about what you would have expected (IF set to 1800 MHZ, SoC voltage set to 1.000V). :)
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