Same.

A number of people are having stability issues with XMP on Z690 motherboards.

I have an Apex Z690 w/ Corsair Dominator DDR5 2x16GB and I can't run XMP I or II stable. I can run at DDR5200 speeds with timings/voltages set to Auto though. I've tried just about every BIOS released for this motherboard (beta and official). I've come to the conclusion that it's just the price you pay for jumping to the latest technology before they work out all of the kinks. In hindsight, I regret upgrading to this platform.

Also, you may want to try clearing your CMOS after updating your BIOS as well just to clean up any old configuration.

I am on 0803 on a Z690 Hero/12900k with Corsair Vengeance @ 5200 on XMP 1 and it seems stable .
I do however get a Windows Error Event , WHEA-Logger Event 1, which is hardware failure. I have decoded the hex to text and I think it may be related to memory.
Not sure, but as for stability my system seems stable.

I'm also having problems with BIOS 803 on the Strix Z690-E Gaming motherboard. I have 4 sticks of Kingston Fury Beast (5200mhz).

The proble is 100% the motherboard/BIOS fault.

If I leave all RAM settings on auto when 4 DIMMS are populated, the system boots fine but the motherboard automatically downclocks the RAM to run at 4000mhz.

If I leave all RAM settings on auto while only 2 DIMMS are populated (sockets A2 and B2) the system boots fine and the motherboard automatically clocks the RAM to run at 4800mhz (JEDEC timings).

I have tried RAM stick 1 with RAM stick 2 in sockets A2 and B2.
I have tried RAM stick 3 with RAM stick 4 in sockets A2 and B2.
I have tried RAM stick 1 with RAM stick 3 in sockets A2 and B2.
I have tried RAM stick 2 with RAM stick 4 in sockets A2 and B2.

(You get the picture - testing two sticks at a time until each stick has been paired with the others)

All those combinations above managed to run at 4800mhz (JEDEC) with zero issues whatsoever so I know for a fact those RAM sticks are working perfectly.

But the moment I populate all 4 DIMMS... the motherboard automatically downlocks the RAM to 4000mhz. I can manually set all 4 sticks to run at 4400mhz and the system runs without any issues whatsoever. But as soon as I try to get all 4 sticks to run at 4800mhz together, the system becomes unstable. It crashes during games and benchmarks and even on the desktop while idle.

Take a look at the CPU-Z timings in the picture below. With 4 DIMMs populated you see the motherboard automatically set them at 4000mhz with more aggressive timings. And in the other CPU-Z pic, you can see with only 2 DIMMs populated it runs at 4800mhz.

I'm not sure if this is a software issue within the BIOS or if DIMM sockets A1 and B1 are simply faulty on a hardware level.

well, I am still on BIOS 0802, perfectly stable (now) with 2 x 16 GB @ 6000 MHz using AEMP 1. It seems better to stay with this BIOS version until things are sorted out.

darth_meh wrote:
A number of people are having stability issues with XMP on Z690 motherboards.

I have an Apex Z690 w/ Corsair Dominator DDR5 2x16GB and I can't run XMP I or II stable. I can run at DDR5200 speeds with timings/voltages set to Auto though. I've tried just about every BIOS released for this motherboard (beta and official). I've come to the conclusion that it's just the price you pay for jumping to the latest technology before they work out all of the kinks. In hindsight, I regret upgrading to this platform.

Also, you may want to try clearing your CMOS after updating your BIOS as well just to clean up any old configuration.

Correction - I can't run at DDR5200. I tried running Prime95 and it froze almost immediately. I switched it back to DDR4800 and I've been running Prime95 for 9 hours without an issue so far.

I'm running BIOS 0803.

Seems like the only people who are ok with these BIOS are people who are using just 2 sticks of RAM. Anybody trying to run 4 sticks of RAM can't do so at JEDEC value (4800mhz) or above without running into instability issues.