01-01-2023 11:20 AM
01-02-2023 08:44 AM
01-02-2023 09:08 AM
If you'd read a bit about DDR5 you'd know it's quite a bit more complicated as that. Ã‚*Not only did the frequency increased, the whole bus is faster, and the power management has been moved from the motherboard to the DIMMs themselves. Ã‚*It really isn't that easy.Ã‚*
Tried a bunch of different voltages for VDD, VDDQ, Ã‚*Tuning CPU System Agent and the Memory Controller Voltage. Ã‚*Tried to run the last one's DRAM freq ratio on 1:2 too, only a few errors in memtest86, but still. Ã‚*Rig doesn't boot with 1:4.
Pretty strange, I'm beginning to think only a BIOS update with added compatibility for high frequency will help, bummer. Ã‚*
01-02-2023 09:45 AM
01-02-2023 11:01 AM
I'm going to throw in a silly idea, but I think I read this suggestion somewhere else on these forums. It fixed something, but as I can't find the post I can't sure if it helped with memory stability... it was claimed that the CMOS sometimes holds onto old settings..
Kill the power completely, turn off the PSU and pull the CMOS battery. Wait for a couple of minutes and then press the CMOS clear button. Hold for 10 seconds or so. Then pop the battery back in and try again. I'm not expecting this to work to be honest, but it won't take long and you never know....
01-02-2023 04:19 PM
01-03-2023 09:18 AM
01-03-2023 09:39 AM
where did you get 0805? its not on the official web page?
I have g.skill F5-7200J3445G. I didnt have any issue using it in Z790 Maximus Hero. I have set to AI overclock. Unlimited Power, XMPII or I both works.
01-03-2023 11:00 AM
What CPU? *
I even used 0806. Links are just above your post.
But unfortunately, still some (very few) errors in Memtest86.
I guess I'll need a 0807...
Set System Agent to 1.25V VDD and VDDQ to 1.420V Per PMIC ME turned off "'enforce all limits". https://imgur.com/64eCugV
Down from hundreds of errors in seconds, to only 2 for a complete loop.
The rig boots just fine, can finish benchmark runs: https://www.3dmark.com/spy/34281414 Should I try to up those voltages even more?
01-03-2023 11:45 AM
01-03-2023 12:13 PM