First post, by pan069
- Rank
- Oldbie
I have this ASUS P5A-B (Ali Aladdin 5) Socket 7 board and when I hook it up without a fan I almost directly get an error message on POST (sorry, didn't capture the exact copy) indicating that I need to go into the BIOS and check the Power Management.
When I do I can see that the +12v is fluctuating around the 13v, like jumping from 12.8 to 13.1 to 13.0 to 13.3 to 12.9 etc. The system itself seems to run fine. I haven't had in on for an extended period of time so it difficult to tell what happens longer term. I guess it would shorten the life span of the CPU..? Anyhow, in this scenario the CPU temperature sits at around 74/75C (165F).
However, when I add a fan to the CPU (no thermal paste) the over-voltage still happens but it seems that the range is lower, like from 12.5 to 13.0, mostly below 13.0 but still erroring.
Besides this, I noticed that the -v12 sits around -11.5 or -11.6.
Of course it could be the PSU. I have tested with two different PSU's, both Startech 300W ATX (the board takes AT & ATX power). I have been using one the PSU for quite a while on a 286 build with no issue (can't measure CPU metrics there though). So, I think its either the board or maybe the CPU itself (Pentium MXX 233Mhz).
Assuming for the moment it's not the PSU, are there any other tests and or remedies or things I can tweak or fiddle with?
Thoughts appreciated.
