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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

octool port to linux

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.

1,551 REPLIES 1,551

Level 7

Hi shamino and cant get you OC tools to works, after is run tool.exe it pops ups a message "not supported"  using x670e and 7800x3D

Level 7

On my X670E Creator the bottom PCIe slot rarely detects a card. The M.2 slot that shares bandwidth with it does so too. Is this a BIOS bug, or is there a setting I'm missing? I need these two slots to work or my computer is useless.

wll i think there is the issue. bandwith sharing is not really a thing. on my 670e-e i have to chose between pcie slot or m2. both not possible

Well, even if I only plug one device in, it isn't being detected, on every boot. For example: I have a Blackmagic Decklink Card, which I put in the 3rd PCIe slot. Sometimes it gets detected and runs at PCIe 2x (which is fine for me), but most of the time, it doesn't get detected. If I put it in the second PCIe slot (and therefore halving the bandwidth for my GPU) it gets detected everytime and runs at 4x.

I want it to run at 2x in the 3rd PCIe slot.... I wonder if this is a bug or what the issue is? 


Have you gone into the BIOS to enable the configuration 2 for last pcie slot? Sounds like otherwise it is auto to default. 
Setting should be under ADVANCED tab, ONBOARD DEVICES CONFIGURATION section. There you should have to the option to select the bifurcation mode you need for each PCIE slot. 

Hope this helps!


(Bifurcation configuration table from your x670 ProArt manual) 



I don't have anything in the M.2 slot and my Elgato card is only detected from the cold reboot. Not critical for me - I got an external hmdi to usb card, but it's annoying - you pretty much lose the PCI-E 4.0 slot there after a sleep or hibernate.

Level 8

My CPU temperature goes up and down to 90º instantaneously. Before the 1003 BIOS update there was no such problem. How can I fix it?

My system
CPU: AMD Ryzen 7950X3D
RAM: GSKILL 64GB (2x32GB) Trident Z5 Neo RGB 6000MHz CL30 DDR5 1.4V AMD EXPO (F5-6000J3040G32GX2-TZ5NR)
PSU: ASUS ROG Thor 1000W Platinum II
GPU : MSI Suprim X 4090
Arctic Liquid Freezer II - 360 A-RGB



Level 7

I'm still on 1004 BIOS with custom 1.25 VSoc. It's been super stable with external blck overclock applied, I won't be upgrading for a long time, seeing how these new bioses seem to be rushed out trash.

Level 8

Any feedback from anyone using 1415 BIOS? I have been on it for a few weeks by now, and I can say my simple BIOS config has been quite stable. Been running OCCT, Cinebench and a few other synthetic stability tests with no issues. I still get GPU driver crashes on CSGO but that is nothing new in that game, otherwise everything else runs pretty fine for me.

I am not affected by the LAN disconnect issue or other recent issues reported on X670-E.

Very stable with combination of Process Lasso. 

One thing I am unable to do is to set thermal limit for my 7950X3D to 90 degrees in bios. System does not post with QCode A9. 

Either than that I’m quite happy.