Aloha, electricity gurus. I recently decided that my case was too cramped, hot, noisy and ugly and so I moved my system lock, stock, and barrel into a new case with a new power supply.
Those figures:
Lexa NZXT case (mm, nice)
Enermax 480W EG485AX-VHB(G) SFMA V2.0
Plugged into a slightly ageing ASRock K8 Combo-Z with an Athlon 64 2800
Well, I want to futureproof a bit.
All goes well until I plug into the wall and flick the switch. Then, the internal fans spark into life for a moment, but otherwise everything seems to be in order. I can power up and get into Windows and everything. Internal temperatures are nice and chilly at 25-30*C idle. I apparently suffer from no ill effects re random restarts, hardware failures, or sudden bouts of leprosy.
If I leave the system off but plugged in for any length of time, though, the whole thing sometimes spontaneously starts up, fans, HDD and all. Then just a second later, it shuts off and cannot be turned back on with the power button. I have to unplug it for a minute or two and wait for it to calm down.
I've used MBM5 and the BIOS setup to have a look at the voltage readings and get the following on idle and after half an hour of high 3D use:
1) (core) 1.55 apparently stable
2) 2.05-2.10
3) (3.3v) 3.34 apparently stable
4) (5v) 5.19 apparently stable
5) (12v) 12.28-12.34
6) 2.86-3.02
7) 3.70-3.85
These are pretty stable and appear to be within the usual 5% tolerance, but the BIOS reports the 12V to be 12.5 which is on the cusp.
Any ideas what's going on here? Is my PSU a bit overactive, silently hoarding the leccy until it actually powers itself up? Can that even happen?
Those figures:
Lexa NZXT case (mm, nice)
Enermax 480W EG485AX-VHB(G) SFMA V2.0
Plugged into a slightly ageing ASRock K8 Combo-Z with an Athlon 64 2800
Well, I want to futureproof a bit.
All goes well until I plug into the wall and flick the switch. Then, the internal fans spark into life for a moment, but otherwise everything seems to be in order. I can power up and get into Windows and everything. Internal temperatures are nice and chilly at 25-30*C idle. I apparently suffer from no ill effects re random restarts, hardware failures, or sudden bouts of leprosy.
If I leave the system off but plugged in for any length of time, though, the whole thing sometimes spontaneously starts up, fans, HDD and all. Then just a second later, it shuts off and cannot be turned back on with the power button. I have to unplug it for a minute or two and wait for it to calm down.
I've used MBM5 and the BIOS setup to have a look at the voltage readings and get the following on idle and after half an hour of high 3D use:
1) (core) 1.55 apparently stable
2) 2.05-2.10
3) (3.3v) 3.34 apparently stable
4) (5v) 5.19 apparently stable
5) (12v) 12.28-12.34
6) 2.86-3.02
7) 3.70-3.85
These are pretty stable and appear to be within the usual 5% tolerance, but the BIOS reports the 12V to be 12.5 which is on the cusp.
Any ideas what's going on here? Is my PSU a bit overactive, silently hoarding the leccy until it actually powers itself up? Can that even happen?