X670E-E BIOS 2806 messed up my system

[Wavepush]

Hello everyone,

So I have a X670E-E gaming WiFi motherboard that I was running CL26-36-36-48-84 for a few months with BIOS 2604. I updated to 2806 to see if I could solve a B SOD issue. However, I ran into serious issues after updating to 2806. I was running very tight timings on 2604, but it was very stable, passed OCCT stability tests. However, after updating to 2806, those settings no longer work. I've tried different voltages and stuff, it doesn't work

So all that is something I expected when changing BIOS. However, what I did not expect was that even downgrading back to 2604, the BIOS that I was previously fully stable in, worked. I noticed that after major BIOS changes(changing ram speeds, primary/secondary/tertiary timings/voltages all at once), my system didn't power cycle, turn off and then turn back on again. It just went straight into posting. 

This behavior was consistent no matter which BIOS I put: 2806, 2604, 2403, etc. My system no longer power cycled after major BIOS changes and I believe this is why 2604 is no longer working and also probably the reason why 2806 is also unstable. I tried every combination of trying to force a cycle: unplugging the power supply unit, turning pde/mcr on and then off, setting my ram speed to 7200 1:1(which should never post, but it did) in different BIOSes, it always went straight to Posting.

I'm not sure what version 2806 did to my motherboard to make this behavior permanent across older BIOSes, but is there any way to reverse it? I tried BIOS flashback and EZ Flash 3 with 2604, 2403 and it's always behaving the same

2604/2806 BIOS settings 

[Silent_Scone]

Hi @Wavepush 

The updates you're referring to contain new AGESA from AMD. It's not uncommon when changing firmware for stability to need to be addressed. However, often I find that the overclock is already conditional even on the "stable" BIOS. 

Are you using an old CMO file?

OCCT is not a particularly good memory stress tool. You can find some more stringent options here as well as some condensed explanations as to the differences between stability at POST and within the operating system.

https://rog-forum.asus.com/t5/technologies-explained/xmp-amp-expo-memory-stability-methodology-amp-t...

[Hpx]

Hi,

I'm experiencing a similar problem after updating my motherboard to bios version 2904. Previously my DRAM would run fine with EXPO 2 profile on bios version 2604 with MCR active.

After experiencing stability issues related to DRAM on version 2904 i backed the bios to 2604, now 2604 is no longer stable with MCR  active. However, it does work with EXPO profile active with MCR disabled on 2604.

From my understanding your system does not work at all, even with optimized settings in bios?

I have the following setup:

7800X3D/X670E-F/ASTRAL 5080

Did updating bios to version 2904 degrade my DRAM so it no longer works with MCR in any bios version?

[Wavepush]

So I actually did update to 2904 after I updated to 2806 and it wasn't stable either, but I was able to get all my stability back by tuning all my drive strength and termination values(Proc CA/CK/CS Drive strengths, ProcODT, DRAM data drive strength, RTT_PARK, RTT_NOM RD/WR, etc)

It took me more than 2 weeks and chatting with GPT, but I'm fully stable again

(Not really endorsing using AI for overclocking help, but it helped me stabilize my Cl26 again and even allowed me to tighten some values, so 🤷🏽‍♂️🤷🏽‍♂️)

[Hpx]

Hi,

In my case it's the EXPO 2 settings that is causing issues with MCR enabled. So for now i have to live with longer boot times no matter what bios version i'm running.

[Kingdramanyz]

My z890 extreme just bricked itself after running new beta bios 1602.  With a 285k and cudimms that never synced at the advertised speed.

Was looking at the asus x870 e boards as a replacement....but after reading these amd issues, I may just go with another brand altogether.

No support for these premium priced bricks leaves us in a unfortunate bind. 

Thanks for sharing you experience. I hope it helps others avoid this lack of Q.C.

[purecain]

I honestly cant believe how bad X670E $1400 Motherboards are.

This is the most expensive board ive ever boaught and is the worst. It doesnt work with the Asus settings in the latest bios versions.