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Memory Training R6EO-Don't throw stones

Hopper64
Level 15
Well, I'm sure you guys are sick of me posting about this. I could not get this 4000MHz memory stable in my signature. Tweaked the VCCIO and VCCSA voltages, but no go so I just stayed with XMP and decreased the frequency to 3733. Worked well for a while, but then had a CPU 22 code that hung for a few minutes a few days ago. The machine then booted in windows with no error. I thought it's still unstable and looked over everything again.

I kept my CPU OC as it was and then checked the VCCSA Voltage only. Baseline was 0.81V with memory frequency changed back to 4000. I figured I would try again to tune these settings. I bumped the VCCSA only to 0.82V and had an EC code on reboot. The machine only has an issue with memory training. All the stress tests I have thrown at it have passed with no problem. It's just cold boot memory training only. I was shooting between 0.95 and 1.00V previously with the VCCSA.

I then added 10mV more. I have not had one boot failure/error in 3 days. I have cold rebooted numerous times without issue. The VCCSA is at 0.83V now with the VCCIO at baseline. Just an update. Hope it stays this way.

79530

79531

79532
MZ790A Bios 2002, GSkill F5-8000J3848H16GX2-TZRK, 13900KS, EKWB D5 TBE 300, Seasonic Prime TX-1600 ATX 3.0, Asus Strix 4090 w/ Optimus block, Phanteks Enthoo Elite, Asus Claymore 2, Asus Gladius 3, Asus XG349C, Samsung 990, Windows 11 Pro
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5 REPLIES 5

Spoons
Level 7
Hopper64 wrote:
Well, I'm sure you guys are sick of me posting about this. I could not get this 4000MHz memory stable in my signature. Tweaked the VCCIO and VCCSA voltages, but no go so I just stayed with XMP and decreased the frequency to 3733. Worked well for a while, but then had a CPU 22 code that hung for a few minutes a few days ago. The machine then booted in windows with no error. I thought it's still unstable and looked over everything again.

I kept my CPU OC as it was and then checked the VCCSA Voltage only. Baseline was 0.81V with memory frequency changed back to 4000. I figured I would try again to tune these settings. I bumped the VCCSA only to 0.82V and had an EC code on reboot. The machine only has an issue with memory training. All the stress tests I have thrown at it have passed with no problem. It's just cold boot memory training only. I was shooting between 0.95 and 1.00V previously with the VCCSA.

I then added 10mV more. I have not had one boot failure/error in 3 days. I have cold rebooted numerous times without issue. The VCCSA is at 0.83V now with the VCCIO at baseline. Just an update. Hope it stays this way.

79530

79531

79532


More voltage 1.35v try 1.40v first b4 any other changes

Spoons wrote:
More voltage 1.35v try 1.40v first b4 any other changes


It's working great. Very stable now. No need for any changes at this point.
MZ790A Bios 2002, GSkill F5-8000J3848H16GX2-TZRK, 13900KS, EKWB D5 TBE 300, Seasonic Prime TX-1600 ATX 3.0, Asus Strix 4090 w/ Optimus block, Phanteks Enthoo Elite, Asus Claymore 2, Asus Gladius 3, Asus XG349C, Samsung 990, Windows 11 Pro

Silent_Scone
Super Moderator
Glad to see you stuck with it. These are non-linear rails that require a systematic approach to tuning, more so when dealing with larger densities like this.
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Silent Scone@ASUS wrote:
Glad to see you stuck with it. These are non-linear rails that require a systematic approach to tuning, more so when dealing with larger densities like this.


And just a mere 20mV in the VCCSA did the trick. Thanks for the help.*
MZ790A Bios 2002, GSkill F5-8000J3848H16GX2-TZRK, 13900KS, EKWB D5 TBE 300, Seasonic Prime TX-1600 ATX 3.0, Asus Strix 4090 w/ Optimus block, Phanteks Enthoo Elite, Asus Claymore 2, Asus Gladius 3, Asus XG349C, Samsung 990, Windows 11 Pro

Hopper64
Level 15
My conclusions were wrong. I have had more memory instability. Gradually increasing the VCCSA over the past week. Increased the VCCIO to 1.05. Still tuning when work allows.
MZ790A Bios 2002, GSkill F5-8000J3848H16GX2-TZRK, 13900KS, EKWB D5 TBE 300, Seasonic Prime TX-1600 ATX 3.0, Asus Strix 4090 w/ Optimus block, Phanteks Enthoo Elite, Asus Claymore 2, Asus Gladius 3, Asus XG349C, Samsung 990, Windows 11 Pro