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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.

2,454 REPLIES 2,454

Look I am just trying to help. But I am not aware of any 4x16gb kits from Gskill at all.
And no matter which platform you are on, you should not mix RAM kits.
Just buy a 2x32gb kit.

I know and I feel you, BIOS situation has been a total mess since the beginning. Also AMD's fault to some degree for sure.
I still have the issue not having boot screens after a reboot. Just getting them on cold boot.
Only solution is to enable CSM support.

I know, sorry but there's a lot a frustration inside many many users.

It's two kits, each of 2x16GB (F5-6000J3238F16G) and I'd rather stay on 1802 and avoid having two unused slots looking like crap.

AMD Ryzen 9 7950X3D | ROG Crosshair X670E Extreme [1905] | Sapphire Nitro+ Radeon RX 7900 XTX Vapor-X | G.Skill F5-6000J3040G32GX2-TZ5NR | 2TB Samsung 990 PRO | 2TB Samsung 980 PRO | 2TB Samsung 970 EVO Plus | Samsung Odyssey Neo G9 | ROG RYUJIN III 360 ARGB | ROG Thor 1200P | ROG Chakram X | ROG Strix Flare II | ROG Theta 7.1 | ROG Cetra True Wireless | ROG Balteus Qi | ROG Carnyx | ROG Eye S | ROG Aura Terminal | ROG Throne | ROG Spotlight | ROG Strix Arion | Windows 11 Pro

If the older BIOS works without any issues, just leave it like that. No need to upgrade.
I know, having two empty slots doesn't look great. Corsair did some dummy sticks in the past.

I was actually quite suprised seing 4x16 kits at 6000 from Kingston popping up in the QVL...

RAM stability has plagued this platform since day 1

Hi, just a question: when you enable CSM support and you save this in the bios, the CSM remains activated once the PC restarts or you turn it off and on ?

In my case the option of enabling CSM doesn't remain saved in the bios memory...



I keep it on and it stays on. I will check again and report back.

Your issue is very strange. Do you have anything connected to the iGPU?
I know when you enable CSM support, the iGPU gets disabled automatically and the option to run it on disapears.

Hi, did you checked if the the option of enabling CSM remains saved in the bios 1807 memory ?


Sorry for not replying earlier. Yes I checked several times to be sure, CSM support remains enabled.

Hi, now I have removed my GPU Nvidia 4080 FE and when I try to enable the CSM support, the optinon is grayed...

Is it normal or not ?

Thanks in advance.


I don't know if its normal, but I know when you enable CSM support, the iGPU gets disabled automatically.
Why I don't know exactly.

But in your case, you can't enable it because you have no dedicated GPU installed.

Level 9

I still having issues with USB. It's very weird also. When I write to USB memory stick the transfer speed vary wildly (from 100MB/s to 0MB/s in ocassions, stoped and crash) and allways (just a few seconds from start, others in the middle, others near the end, but usually in a few moments after starting) in very large files (mainly big videos, about 200GB large video files) throws an error. The error is allways the same: Error 0x800703ee. Windows 11 installed from scratch is the same.
I use to work in this way to provide video files to clients, and now it is not possible. The point is if I conect to USBC front or rear conector, with an card reader this does not happens, so it seems is limited to USB3.1/3.2 ports (tested USB2.0 front pannel and works well but limited to about 30Mb) I already tested the back ports (3 not all of them) and the same issue is present.
Something in my board: ASUS Crosshair X670E Hero is definitevely wrong. I even today do a backup and install from scratch complete Windows 11 system, but the issue is still present (in case drivers or apps were implied in the issue).

Does anybody try (or willing to try) to copy large files (200GB) on a USB stick or memory card with an USB 3.0 adapter to test what happens please?

This issue is driving me crazy.