Reboot Ahoy : 340watt not enough?
 

I'm having the strangest experience ,
a couple weeks back I changed the mobo & cpu of my Multimedia PC

currently it houses

ASUS P4PE
P4 2.26Ghz
256Mb DDR
R8500 AIW DV
SB Audigy
PCI SCSI card

2x 7200rpm HD's (ata66&ata100)
1x 16speed DVD
1x disk drive

I can boot the machine just fine a make all the adjustments I want in my BIOS.

But whenever I try to boot into Windows , it starts cold booting @ random

Using these numbers & the 56Watt specs for a P4 2.26

I end up with ~251Watt used.

the PSU is a Chieftec 340Watt, but It "seems" it can't cope with the power requirements of the P4 :(


ps: 2.8+Ghz folding station of course down 24/24 :/
I hope that the problem will be fixed saturday when I will buy biCker's 450Watt PSU

strange...

you've tried em on another computer?

"em" ?

what "em"? :-)

anywayz
very strange things
It might be the CPU who is screwed up :-/

I removed the SB, SCSI, the DVD and 1 HD.
started back up, same things keeps happening

but now!
I up the vcore of the cpu to 1.77v
and it is stable.
folding away at 100% usage
CPU temp @ 56°C
and running @ 150x17

anything below that voltage = random reboots at no matter what speed (also at default 2.26)

:(

CPU ran at 2.760Ghz for some time now @ 1.70v vcore.. never went above that

now it doesn't work at the same voltage/speed

ARGHL

u've tried the PSU on an other computer?
5v rail ok?

otherwise-->cpu fvx0red

The easiest thing to do (10 min work) would be to put another PSU in it and see what happens.

I'm sure you have a 250W Aopen lying around ....

CPU not even stable @ 2.25ghz now

not even when pushing 1.85v :(

argh

the general replaces em for only 15€ :o

he's also supplying me ram,
512mb DDR pc 2100 cl2.5 Twinmoss for only 135€ :o

(borrowed some cash from my 'bro until the beginning of next month ;))

huh? what ? where how ?

el general = in close contact with intel :grr:

with his function, he can E.G. replace a dead cpu with a new one, as long as it isn't broken in two, totally scorched or so

don't ask me how he does this!

contact him @ the SG forum
it's even possible that he gives you a replacement cpu while he's getting a new one!

I guess the psu is to blame here.

I have the same mobo but with a P4 2.53, 512 DDR, gf4 ti4200, 7200 rpm hd, dvdrom + writer (+sb live!, but i doubt this requires a lot of power ;) )
My psu is an enermax 350W, which should be enough. For some unknown reason, my 12V line does never reach 12V tho, it's more like 11.4-11.6V when under full load... Other V lines are quite right tho.

My guess it's either the psu that can't cope or the mobo that returns faulty stats readings.
In a review ( http://www.3dxtreme.org/Soltek_sl-85DR3p1.shtml ) they claim the asus P4PE returns a CPU temperature that is 9 to 10 degrees over the real value (compared with other mobo's), maybe the V lines are not correct either ?

To test this (and because a needed a stronger PSU for my server anyway), I bought a antec true power 480W PSU, which I'll go and get shortly. I'll replace the enermax with it and replace the server psu (a mere 250W) with the enermax.
I'll keep you posted ;)