+3.3v / +5v / +12v => which is most important in an O/C system ?

[BEIF]

Hi

Am wondering which of the voltage lines +3.3v / +5v / +12v is most important to a stable / high overclock.

Reason I ask is that my rig [ A8V / 3200+939 / 1gig Corsair ] is fully P95, CPUBurn etc ... stable for over 24 hours at 9.5 x 274 @ 1.55v = 2.602gig.

Problem is that my rig suffers from [regular ] cold-boot-failures - every 3rd or 4th cold-boot, the system refuses to boot up.

Upon checking, my P/S [ 3 yr old 420w Topower unit ] it only has 18A on the 12v line.

Apparenlty 18A on a 12v line is very low for such a high o/c and I have been told that this is almost certainly the reason for my cold-boot problem.

So, is it likley to be my P/S or do I have a *dud* motherboard.

My other components are:-

- DVD Rom
- CD-RW
- 1 x 80 hdd
- 64meg GForce MX basic video card
- 1 x 1.44floppy
- 3200+ A64 @ 2.602gig
- 2 x 512 Corsiar 512 XL
- Zalman 7000
- 1 x 120mm Antec Fan
- PS2 Kb & PS2 mouse
- a couple of USB items conneted to the USB
- Printer - not running power off USB

Thx,
Ben

 

[zakee00]

your psu should be fine, the processor is really the only power hog in your system. your gf4 dosnt take crap. not sure what to tell you, except try lowering your clock speed and see what happens.

 

[BEIF]

......... bump .........

[ sorry to bump but I need to decide in the next day or so if I am going to spend my money on a new P/S like a OCZ Powerstream 520 or try a different mb like a MSI ]


Beif

 

[ntrights]

I think its you'r psu that can't deliver sustainend current to the system. Easiest way to find out is ofcourse if you can borrow one from a friend or computer shop...I had similar problem with my system initially when i hit 4gig, my friend borrowed me his brand new ocz510w and Voila! i was suddenly stable at 4

 

[BEIF]

Hi ntrights

What sort of instability problems were you getting ?

Were you also getting regular cold-boot-up failures even though your O/C was fully stable when it *did* boot up properly ?

Thx,
Beif

 

[ntrights]

no cold boot failure but i did get reboots evry 3-4 hours AND this was not load dependent i could get the reboots at idle as well. Eg. I could run stable for 4hours without rebooting with heavy load. and then next moment when the computer is idling it rebooted ..lol..but testing ocz510 solved the matter for me! I'm running my 2 year ol psu again but with moded sense rails :evil: