[Official] Zen 4 X3D Owner's Club (7800x3D / 7900x3D / 7950x3D)

Pietro · Apr 25, 2023

Asus just posted new beta 1412 bioses for some boards that have this information: "SoC voltage for Ryzen 7000X3D series limited to a maximum of 1.30V to protect the CPU and motherboard."

Tactix · Apr 25, 2023

The voltage in question is the CPU VDDCR_SOC as listed in HWinfo correct, and 1.30v is whats considered safe for now?

Veii · Apr 25, 2023

Tactix said:
The voltage in question is the CPU VDDCR_SOC as listed in HWinfo correct, and 1.30v is whats considered safe for now?

VDDCR is what the CPU requests
SOC voltage itself is what the VRM/PWM-Controller gives

Tactix · Apr 25, 2023

Veii said:
VDDCR is what the CPU requests
SOC voltage itself is what the VRM/PWM-Controller gives

Ok, so which one do I need to pay attention to?
Not sure why this is so confusing but just want to be clear

hsn · Apr 25, 2023

Veii said:
VDDCR is what the CPU requests
SOC voltage itself is what the VRM/PWM-Controller gives

is burning proc with mobo only happen on ryzen x3d?
or defect hardware from start launching?

donnieyeen · Apr 25, 2023

hsn said:
is burning proc with mobo only happen on ryzen x3d?
or defect hardware from start launching?

Not only on x3d chips, all of the new zencan be affected.

hsn · Apr 25, 2023

donnieyeen said:
Not only on x3d chips, all of the new zencan be affected.

so, max soc 1.3v for all ryzen 7000 or only for x3d?

Tactix · Apr 25, 2023

What I mean was which SoC voltage?
there are a few

HappySheep · Apr 25, 2023

desiprofessor1983 said:
Thermal limit, should be in PBO settings.

its on the enhanced PBO but i thought the limit for X3D was 89c and on there theres only 70-80-90c limits, probably 1c more wont hurt but just wondering why they didn't add a X3D PBO temp limit

Pietro · Apr 25, 2023

hsn said:
so, max soc 1.3v for all ryzen 7000 or only for x3d?

It should be for both since 7000 and 7000X3D have the same I/O die.

simonabamber · Apr 25, 2023

HappySheep said:
its on the enhanced PBO but i thought the limit for X3D was 89c and on there theres only 70-80-90c limits, probably 1c more wont hurt but just wondering why they didn't add a X3D PBO temp limit

This was covered a while ago while you were on your break, even though it says 90 it's actually 89. Also heard the whole thing is broken as it sets CO too low but I don't know for sure.

@Veii how are you getting on curve optimising your chip? is it still minimal CO offsets or can we go a lot more whilst avoiding stretch/gating etc?

dansi · Apr 25, 2023

At 1.3v VDDCR_SOC , it is pretty much good bye to >2000 fclk and >6000 ram.

donnieyeen · Apr 25, 2023

dansi said:
At 1.3v VDDCR_SOC , it is pretty much good bye to >2000 fclk and >6000 ram.

Why would you say that? Seem 2100-2167 runs just fine on 1.3V VDDCR_SOC. Some even run 2200.

RaimoTorbouc · Apr 25, 2023

Someone knows if LLC can affect VDDCR_SOC? Considering high LLC can often overshoot a few, it could explain the conservative 1.3V from Asus.

rv8000 · Apr 25, 2023

donnieyeen said:
Why would you say that? Seem 2100-2167 runs just fine on 1.3V VDDCR_SOC. Some even run 2200.

6200 sure, 6400+ probably not so much. Similar for fclk, likely to be limited to 2100-2133 for most unless you have an absolutely golden of golden chips.

dansi · Apr 25, 2023

donnieyeen said:
Why would you say that? Seem 2100-2167 runs just fine on 1.3V VDDCR_SOC. Some even run 2200.

I doubt so. Also consider 1.3v is the max safety determined, when you add in LLC and overshoot, you want to lower to 1.25v to 1.28v conservatively.

I just tried and i got a PFN_LIST_CORRUPT bsod, almost killed my c: drive! Speaking from 64GB pov

Killboywes · Apr 25, 2023

dansi said:
At 1.3v VDDCR_SOC , it is pretty much good bye to >2000 fclk and >6000 ram.

I can run my 6000 mhz tuned ram with 2200 flck at 1.250 soc voltage stable. And 6400 mhz 2200mhz flck at 1.3 soc voltage?

Veii · Apr 25, 2023

nvm, wrong thread

Tactix · Apr 25, 2023

dansi said:
At 1.3v VDDCR_SOC , it is pretty much good bye to >2000 fclk and >6000 ram.

My 7800X3D is doing 1.24v VDDCR_SOC and 2000 fclk with 6000 CL 30 no issues.

donnieyeen · Apr 25, 2023

dansi said:
I doubt so. Also consider 1.3v is the max safety determined, when you add in LLC and overshoot, you want to lower to 1.25v to 1.28v conservatively.

I just tried and i got a PFN_LIST_CORRUPT bsod, almost killed my c: drive! Speaking from 64GB pov

Which SoC readout do I need to watch in hwinfo?
The vddcr_soc stays locked at 1.3v after manually setting it. The 'cpu soc' readout from Hero sensor shows max 1.296v and avg of 1.291v. I am currently running 2100fclk at 6000/cl28 tuned on 64gb. No issues. Probably soc could go lower.

Also it looks like Asus might already set it bit conservatively to 1.3v, pretty sure 1.35v is still fine as well.

Model	Cores/Threads	Boost/ Base Frequency2	Total Cache	TDP
AMD Ryzen 9 7950X3D	16C/32T	Up to 5.7 GHz / 4.2 GHz	144MB	120W
AMD Ryzen 9 7900X3D	12C/24T	Up to 5.6 GHz / 4.4 GHz	140MB	120W
AMD Ryzen 7 7800X3D	8C/16T	Up to 5.0 GHz / TBD*	104MB	120W

[Official] Zen 4 X3D Owner's Club (7800x3D / 7900x3D / 7950x3D)

Pietro

Tactix

Veii

Tactix

hsn

donnieyeen

hsn

Tactix

HappySheep

Pietro

simonabamber

dansi

donnieyeen

RaimoTorbouc

rv8000

dansi

Killboywes

Veii

Tactix

donnieyeen

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