Asus Surge Protection Shutdown - Questions

[RTopsy]

Hello!

First off, yes I've seen the

"The anti-surge feature correctly detects power surges but it detects them at a threshold which is far too low. Furthermore, these surges are a natural consequence of rapid changes in current and voltage levels that are characteristic of many powerful GPUs."

reply multiple times now.

I haven't got an external surge protector and do sometimes think the wiring in the house is a bit wonky.


I've been logging my voltages at 100ms lately with HWiNFO to see if I can detect a pattern.
The 12v seems to be a bit all over the place but I think in the acceptable window, min 11.136, max 12.288

3v and 5vs are very stable. I've only logged the voltages and not the clockspeeds etc, if that would help I can also log those. I'l add two logs of recent crashes incase anybody is interested.

What I've noticed though, it only happens when near idling (music running, browser open/typing a document. Very rarely in PS, never whilst gaming.

- Would HWiNFO never get to see voltage fluctuations before the mobo shuts it down?
- Would the fluctuations recorded not point to the mobo not being that sensitive after all?
- This has only started happening in mid December after being stable for two years

I've got no clue myself, I know extremely little about electronics sadly.



For the record, my system:
LEPA G850-MAS
Asus ROG Z87 Maximus VI Hero
Intel i5 4670k 3.4GHz
Crucial Ballistix Tactical Tracer 16gb DDr3 1866mhz
Asus DirectCUII GTX 580



Logs:
Both were in browser with music running & steam iirc, 14 was with me working in browser, steam and music. Nothing special.
https://www.dropbox.com/sh/26dynf7vfj1695x/AABOqRIYpqvXMI8CcJb7zfqWa?dl=0


I'm happy to provide more info if I can. I just thought I'd rather have a little discussion and gain some insight.

Thanks a lot
Topsy

 

[GhislainG]

11.136 volts is out of specs. There may be an issue with your PSU because in this review the +12V rail is stable: https://www.techpowerup.com/reviews/LEPA/G850-MAS/1.html

 

[RTopsy]

I had once read that fluctuations of 10% on a 12v rail are acceptable, but I guess that's 10% both ways and not 10% up and down from 12v.. (or the source simply was wrong!)

I've ordered a BeQuiet Straight Power 10 CM 600W and hope that will solve everything.

Cheers for your link and answer!

 

[turkey3_scratch]

It's 5% in both ways. 11.4V to 12.6V is within spec. Lepa makes very few quality PSUs.

Also, that's not a voltage fluctuation. Voltage fluctuations are ripple, which is impossible to be read without an oscilliscope.