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X670 resource


ill use this thread to collect some new test bioses for the boards, maybe also to explain some less understood options

to disable cores ccd go here and choose ccd xx bit map down core.
each ones stand for an enabled core
best to disable from the back, ie:
instead of 0011000
after selection press downcore apply changes or discard if made mistake


7950x not boosting pass 5.5G -> check that CStates is not disabled
Detailed Explanation on CState Boot Limiter

Test BIOSes:

X3D OC Preset for those MB with asynch BCLK Support: (for simple slight perf boost for X3D)

DOCP/EXPO Tweaked: (for simple timings tightening)

strixe-e 1515 

strixe-f 1515 

strix e a 1515 

crosshair hero 1515 

crosshair gene 1515 

crosshair extreme 1515 

creator 670 1515

creator b650 1515

strix 650E I

strix 670 itx



for crosshair and strix e-e:

explanation of segment2 Loadline:


customize a heterogenous loadline for a dual segment workload range.

example above shows loadline=L6 when current is in range of 0~40A, and Level4 when current is above 40A.




Adds for x3d

dynamic ccd priority switch with core flex, os / driver agnostic so win10 win11 ok



Algo as follows:
If condition reached and ccd0 specified, then check current mem/cache activity > threshold and hysteresis reached, if fulfilled then switch
If condition reached and ccd1 specified, then check current mem/cache activity <=threshold and hysteresis reached,, if fulfilled then switch
Default hysteresis =4

Can combine multiple algos for ccd priority so combinations are wide

works on non x3d too but of course senseless on it. detailed explanation here.

2,395 REPLIES 2,395

Level 8

I'm having a strange problem with 1101 and 7800x3d. If I enable PBO after selecting x3D Preload OC. It doesn't boost. It's stuck at 4998mhz. I changed ABCLK to 104, 105, 106 etc. Nothing changed. Still stuck at 4998mhz. It only works if I choose PBO Enhanced. It's running at 5200mhz with PBO Enhanced.

Level 8


Yeah i run into the same Problem, which Mainboard you on?

How did you get to solve it, whats your Bios Options?

Strix 670E-F. I left it in PBO Enhanced mode for now.

My settings are ABCLK set to 103Mhz and Pbo Enhanced Enable. Thats all.

If I Enable Curve. Stucks at 4998mhz... Nothing else working except Pbo Enhanced.

If i change the ABCLK im getting worse MHz Numbers in Game, except in HWInfo i see the Cores are reaching higher Clocks.

For Example in Fortnite if i go only PBO Enabled + CO i archieve the 5050Mhz. If i try to for example ABCLK 103 it wont even reach 5000Mhz its hilarious.

Same problem. For now, you can try the Pbo Enhanced. It's running at 5200mhz. Leave other settings auto.

Im on a x670e Extreme, i got 3 Options for PBO Enhanced Lvl1/2/3. When im setting my ABCLK to 103 and activate any Lvl of PBO Enhanced my PC is restarting....

Im not even seeing 5200Mhz in Game, most Mhz in Game i saw is 5050Mhz.

Must be doing something wrong.

Forget something i activate PBO Enhanced Lvl 3 and CO, should i leave CO on Auto ?

I set lvl 1 and PBO CO auto.

So no ABCLK, only Lvl1.

ABCLK 103 and Lvl1.