R6EO Instability

[Hopper64]

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.

[Hopper64]

Seems the more I alter the VDIMM the more instability is induced. Still farting with tuning the memory. Fewer crash codes this afternoon with the following:

[jsarver]

Did you have this running on the rampage extreme vi before you “upgraded” motherboards?

[Hopper64]

No, I had Corsair dominator 3600 memory on that machine.

[Hopper64]

Still tuning the VCCSA and VCCIO voltages. Seems to be more unstable as the VCCSA voltage is reduced below 1.12V. Interesting to watch the interaction between these 2 parameters. I have the two at 1.15V now with VDIMM at 1.35V as recommended for the latter. Had a BD code with 1.15V SAV and 1.17V for the VCCIO. Still testing.

[jsarver]

Surprised you’re still at it. I would have downclocked a long time
Ago. *

[LiveOrDie]

jsarver wrote:
Surprised you’re still at it. I would have downclocked a long time
Ago. *

Yeah I know, the memory controller is only rated to 2666MHZ just because Asus says the board can do 4000+ Mhz doesn't mean your memory controller can.

[Hopper64]

LiveOrDie wrote:
Yeah I know, the memory controller is only rated to 2666MHZ just because Asus says the board can do 4000+ Mhz doesn't mean your memory controller can.

I’m obstinate. It worked for weeks on 0218 with no issue. That’s why I’m putting in the extra time. *

[LiveOrDie]

Hopper64 wrote:
I’m obstinate. It worked for weeks on 0218 with no issue. That’s why I’m putting in the extra time. *

Mite of just been luck there are more factors than just the bios to think about also time is money as they say lol.

[Hopper64]

LiveOrDie wrote:
Mite of just been luck there are more factors than just the bios to think about also time is money as they say lol.

Perhaps that's true of course. It's a hobby for me for the most part. I'm just miffed I didn't record all the values with 0218. It was so stable.

[Silent_Scone]

As mentioned previously, with that density the margins will always be tight at those speeds. You need to look at the sub timings, too.