Asus Maximus XI Extreme maximum VSA & VCCIO for 24h/7d use

[Fraizer]

hello

With this motherboard Asus Maximus XI Extreme (chipset Z390) last bios 805

can you tell me if it is bad for the motherboard and the memory to have an VSA set to 1,4000 or 1.4500volts ? or to an maximum of 1.5000volts ? it stay safe for 24h/7d ?
i dont speak here about the dimm voltage who is on this 4x 8gb gskill 4600mhz memory at 1.45v. (but will oc to 1.50v).
is not to go to 4600mh but to be the more close possible like 4400 4500... but again for an 24h/7d.

same question about the VCCIO ?

an good oc friend told me it is without problem for VSA up to 1.500volts. i trust him on that but in case he miss an information part (is human... i miss personaly many things lol) like for exemple at VSA =1.4500 or 1.5000 is an special situation, or need a air cooling on memory or... etc...

just to be in peace in my head to not burn my motherboard or the memory lol

[Enderwiggin03]

mdzcpa wrote:
I would settle for whatever speeds can be achieved with IO/SA at 1.4v or lower. I would never recommend 1.5v for 24/7.

I was just the impression to stay below 1.3v to prevent damage to the CPU, this change with newer generation CPUs? I guess I'm worried about degrading the IMC in 6+ months.

[mdzcpa]

Enderwiggin03 wrote:
I was just the impression to stay below 1.3v to prevent damage to the CPU, this change with newer generation CPUs? I guess I'm worried about degrading the IMC in 6+ months.

I agree with you with you that lower is better. 1.4v would be the absolute limit let alone 1.5v the OP was referencing. This thread motivated me to take SA/IO off Auto (1.3v) and adjust all the way down to 1.215/1.20v while keeping my speed at 4000mhz Q17.

[Enderwiggin03]

mdzcpa wrote:
I agree with you with you that lower is better. 1.4v would be the absolute limit let alone 1.5v the OP was referencing. This thread motivated me to take SA/IO off Auto (1.3v) and adjust all the way down to 1.215/1.20v while keeping my speed at 4000mhz Q17.

Currently at 1.280/1.232v with my 3900mhz CL16 (4266Mhz CL19 just won't work).

[Silent_Scone]

Personally, I consider more than 1.35v on SA/IO to be bad tuning (when doing things manually) for 24/7 regardless of safe limits. In terms of performance, a good CPU should be able to run 3600-4000 at or near the minimum timing spacing required when paired with the right modules. If doing things manually this is where I would aim.

Tuning on these rails comes down to an alignment issue, so sometimes less voltage is better than more. My sample does 4000Mhz with 1.15 VCCSA and 1.1 VCCIO, so simply experiment once you know what the modules can do.

[Enderwiggin03]

Silent Scone@ASUS wrote:
Personally, I consider more than 1.35v on SA/IO to be bad tuning (when doing things manually) for 24/7 regardless of safe limits. In terms of performance, a good CPU should be able to run 3600-4000 at or near the minimum timing spacing required when paired with the right modules. If doing things manually this is where I would aim.

Tuning on these rails comes down to an alignment issue, so sometimes less voltage is better than more. My sample does 4000Mhz with 1.15 VCCSA and 1.1 VCCIO, so simply experiment once you know what the modules can do.

I assume memtest86 it's a good place to start for doing memory reliability testing? With the newer than 0602 bios, BSODs are random, but all memory related, and looking for a good way to check stability.

[Silent_Scone]

Enderwiggin03 wrote:
I assume memtest86 it's a good place to start for doing memory reliability testing? With the newer than 0602 bios, BSODs are random, but all memory related, and looking for a good way to check stability.

Memtest86 isn’t capable of finding errors beyond faulty modules or extreme instability. Use HCI Memtest or Ramtest.

[Fraizer]

thank you guys for all your messages !!

you probably save my cpu 🙂