7800X3D SOC voltage

[4b33r]

After setting my memory to the EXPO profile, I manually set the SOC voltage in the BIOS to 1.05v fully expecting it not to boot. Planning on gradually increasing the voltage until the system was stable. But it booted into windows straight away, the memory running at EXPO speed. In HWinfo the motherboard sensors show the SOC voltage at 1.08v and so does the BIOS but the CPU sensors are showing the SOC voltage as 1.2v and so does the AMD Ryzen master software. 

So what is my actual SOC voltage?

[GuiltySpark_]

delete

[venomtail]

1 hour ago, GuiltySpark_ said:

delete

[GuiltySpark_]

7 minutes ago, venomtail said:

I said something, re-read the OP, it was wrong so I deleted it. Can't remove posts entirely so.. yeah.

[RONOTHAN##]

2 hours ago, 4b33r said:

After setting my memory to the EXPO profile, I manually set the SOC voltage in the BIOS to 1.05v fully expecting it not to boot. Planning on gradually increasing the voltage until the system was stable. But it booted into windows straight away, the memory running at EXPO speed. In HWinfo the motherboard sensors show the SOC voltage at 1.08v and so does the BIOS but the CPU sensors are showing the SOC voltage as 1.2v and so does the AMD Ryzen master software. 

So what is my actual SOC voltage?

It's probably 1.2V, though can you send screenshots of HWInfo just to make sure? It was a bug on early Gigabyte BIOSes especially where the SOC voltage setting was broken and you needed to use the one in the AMD Overclocking submenu in order to get it to work. 

[Bagzie]

It'll be 1.2v , in my experience 7000 series socs won't do expo at 1.05v.

 

There will be some offset for expo bumping it up.

[4b33r]

9 hours ago, RONOTHAN## said:

It's probably 1.2V, though can you send screenshots of HWInfo just to make sure? It was a bug on early Gigabyte BIOSes especially where the SOC voltage setting was broken and you needed to use the one in the AMD Overclocking submenu in order to get it to work. 

Should I try setting a negative offset for SOC voltage in the AMD Overclocking menu in the BIOS?

[GuiltySpark_]

For reference, Asrock board and manual SoC voltage set to 1.25.

 

[RONOTHAN##]

25 minutes ago, 4b33r said:

Should I try setting a negative offset for SOC voltage in the AMD Overclocking menu in the BIOS?

I wouldn't do an offset voltage, those are somewhat known to cause issues. It should just be possible to set a static voltage in that menu. 

 

Also just to confirm, are you on the latest BIOS? 

[4b33r]

9 minutes ago, RONOTHAN## said:

I wouldn't do an offset voltage, those are somewhat known to cause issues. It should just be possible to set a static voltage in that menu. 

 

Also just to confirm, are you on the latest BIOS? 

Got it, will try that now. I am on the latest BIOS.

[4b33r]

31 minutes ago, RONOTHAN## said:

I wouldn't do an offset voltage, those are somewhat known to cause issues. It should just be possible to set a static voltage in that menu. 

 

Also just to confirm, are you on the latest BIOS? 

I just set the SOC voltage as 1150 in the AMD overclocking menu but HWinfo is still showing it as 1.2v and so is Ryzen Master.

[4b33r]

12 hours ago, RONOTHAN## said:

It's probably 1.2V, though can you send screenshots of HWInfo just to make sure? It was a bug on early Gigabyte BIOSes especially where the SOC voltage setting was broken and you needed to use the one in the AMD Overclocking submenu in order to get it to work. 

 

3 hours ago, GuiltySpark_ said:

For reference, Asrock board and manual SoC voltage set to 1.25.

I finally managed to do it after trying a few things.
What worked was setting the SOC voltage on the main "tweaker" page to auto THEN going into the AMD overclock settings and changing the SOC voltage.
The cpu (SVI3 TFN) sensor on HWinfo and Ryzen Master both now show the correct SOC voltage and the motherboard sensors show about 30mv above that.
Also I may have won the silicon lottery as I managed to lower the SOC voltage to 1v flat, boot into windows, run OCCT memtest and get errors. Right now it seems stable at 1.05v.