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R6EO Instability

Hopper64
Level 15
Still having stability issues with bios 0504. I had installed windows with 0218 with no problems at all. CPU is by SL. I keep getting problems on cold boot. I had BD memory error 2 days ago and changed the Uncore voltage from auto to 0.200 and it crashed without getting to windows. Decreased Uncore to 0.100 and it went through Memtest 400% with no errors and, more importantly, it did not crash. I had already tested the memory outside windows with no errors. On cold boot this morning, I had another crash with Uncore at 0.100V. Machine came back up with "memory is OK, press F1 to save memory settings." I decreased Uncore to 0.050V.

Where to go from here? As I said, I installed windows with 0218 bios version and no problems.

78956

78957

78958

78959
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
25,198 Views
96 REPLIES 96

Hopper64 wrote:
Wish I could. I tried that first and I got the "Don't shutdown or reboot to avoid system bootup failure" message.

Frankly, I like learning to tweak these voltages anyway. 🙂



Yeah. Always worth noting these things before you update. I kept a note of all applied voltages, measured voltages (good practice), and all associated timings and variables.

Raja@ASUS wrote:
Yeah. Always worth noting these things before you update. I kept a note of all applied voltages, measured voltages (good practice), and all associated timings and variables.


Wish I had done that. 😮
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

LiveOrDie
Level 11
Weak IMC which isn't handling 4000Mhz on the your memory, pretty sure increasing system agent voltage helped or drop you memory down to 3900mhz and see if the problem is still there.

LiveOrDie wrote:
Weak IMC which isn't handling 4000Mhz on the your memory, pretty sure increasing system agent voltage helped or drop you memory down to 3900mhz and see if the problem is still there.


I don't think the IMC on this chip is weak as it was working great with 0218. I think some adjustments were needed, especially under 0504. Thanks.
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
This is the first day in several that I haven't had a cold boot BD code with "Memory OK. Press F1 to save memory settings." I bumped the VDIMM again and tested but then went ahead and bumped the SAV and VCCIO. "Try in the region of 0.950-1v VCCSA and 1.05-1.1v VCCIO," per Silent Scone. Baseline:

79000

Now with this only this morning. I think bumping the VCCSA and VCCIO did the trick. It is not so much general stability but, more specifically, boot stability that is the issue:

79001
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

Raja
Level 13
There's no going back once you start doing this stuff. Saves a lot of time and hassle.

Hopper64
Level 15
Still had a crash yesterday so I bumped the SAV and VCCIO a bit. Cold booted now 4 times no issues. I wonder if I could bump the VDIMM to 1.39 again and test? Seems to output 1.394V with 1.38V in HWInfo64.

79026

79027
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

ThrashZone
Level 10
Hi,
Yeah I use 1.39 to get just above 1.4v readings.

I already posted my voltages that were for a little 4.5 clock and 3600C16 memory 16-16-16 timings 1T

Yours voltages are of course a lot higher than mine were kind of why I said auto voltages were crazy 🙂
[SIGPIC][/SIGPIC]

ThrashZone wrote:
Hi,
Yeah I use 1.39 to get just above 1.4v readings.

I already posted my voltages that were for a little 4.5 clock and 3600C16 memory 16-16-16 timings 1T

Yours voltages are of course a lot higher than mine were kind of why I said auto voltages were crazy 🙂



He is running DDR4-4000 with 64GB of memory. Stands to reason that voltage requirements may be different to yours.

Raja@ASUS wrote:
He is running DDR4-4000 with 64GB of memory. Stands to reason that voltage requirements may be different to yours.


Hi,
Yes not sure I ever stated what my clocks were set at 🙂
[SIGPIC][/SIGPIC]