Odd problem with MB/CPU

[genro]

Well i have a problem that seems a bit odd to me or some part is defective.
Here is the problem..... whenever I up the voltage in the BIOS it causes the system to become unstable.
Even at 2.6 ghz i can up it to 1.55 and it will make windows blue screen or the computer to lock up on boot.
Currently I have it running at 2925 mhz, 1.52 vcore, 5:4 divider running stable.
Temps idle are 30 C and when under prime95 for an hour 48C

Here are my specs

P4P800 ND
2.6c
Stock cooling with AS3
2x PC3000 Kinston HyperX
360 watt enlight PSU

Ask if you want to know anything else.

 

[genro]

Also what do u guys reccomend for a solid copper HSF or even a 100 to 150 dollar water cooling setup?

 

[myocardia]

The Thermalright 900u is very good, although it's pretty big, pretty heavy, and pretty expensive. That's what I would recommend. Although, quite a few people like the Zalman 7000a Al-Cu. Neither come with a fan at all, so you'll need to pick up either an 80mm or a 92mm fan to go with them. Oh, I almost forgot: your system becomes unstable whenever you up the voltage. Let me guess, you have the power supply that came with your box, right? A "350 watt" no-name power supply can't put out the kind of amperage that overclocking requires. Antec makes very good, powerful power supplies for the money. As a matter of fact, alot of the people here use Antec TruePower 430, which newegg is selling now for $70. You can't beat that. I paid $93 or $94 for my TruePower 480 not too long ago (although it will run the computer, underclocked, in Dos, and a 2x200 car audio amplifier, pushing subs!!) at the same time!)

 

[Zacmaniac]

Originally posted by: myocardia
The Thermalright 900u is very good, although it's pretty big, pretty heavy, and pretty expensive. That's what I would recommend. Although, quite a few people like the Zalman 7000a Al-Cu. Neither come with a fan at all, so you'll need to pick up either an 80mm or a 92mm fan to go with them. Oh, I almost forgot: your system becomes unstable whenever you up the voltage. Let me guess, you have the power supply that came with your box, right? A "350 watt" no-name power supply can't put out the kind of amperage that overclocking requires. Antec makes very good, powerful power supplies for the money. As a matter of fact, alot of the people here use Antec TruePower 430, which newegg is selling now for $70. You can't beat that. I paid $93 or $94 for my TruePower 480 not too long ago (although it will run the computer, underclocked, in Dos, and a 2x200 car audio amplifier, pushing subs!!) at the same time!)

Huh? Look again, it seems like the 7000A al-cu comes with a fan....

 

[genro]

Myocardia, I do mention that i have a 360 watt "heavy duty" Enlight PSU dual fan, been using Enlight PSUs for like 5 years now never had any trouble at all.

What makes no sense at all is why the system becomes unstable by upping the vcore at default speeds

 

[genro]

Any idea why this is happening anyone?

 

[myocardia]

Hmmm, it is a 2.6C, right? Assuming it is, it sounds like you got a "bad" board: fine for normal use, but no good for OCing. That happens sometimes. If 2.9Ghz isn't enough for you, see if you can sell it, and get another board. Although, I wouldn't do anything until I put that proc into a known-overclock-friendly motherboard, because you may just have ended up with one of the chips that is never gonna hit 3.5Ghz.

 

[genro]

see thats what i am wondering thinking about taking it to work and ploping it in another p4p800 , also forgot to mention i can get it to boot at 3.2 ghz with default vcore but is unstable in windows

 

[Duvie]

Not all POwer supplies are created equal...These p4c chips need IMHO a power supply that will deliver 20+ amps on the 12v rail...What does yours do???


Also list your +12v,+5v,+3.3v, and vcore at both idle and under load....

Also know this asus mobos overvolt so what you have set as 1.525v in the bios may already be 1.575 actual...

i think it could be a power supply that is weak on the 12v rail the most important rail to the p4 and very critical when it comes to overclocking...the vcore is set off of the 12v rail and if it is weak raising the vcore up a notch makes the 12v become unstable or too low....

 

[genro]

No Load:
12v = 12.281
5v = 5.241
3.3v = 3.5
vcore = 1.584

Load (prime95):
12v = 12.159 - 12.099
5v = 5.241
3.3v = 3.472
vcore = 1.52

Also, taken from sisoft sandra are there good for memory?
Float Buffered iSSE2 (Float STREAM) Results Breakdown
Assignment : 4878MB/s
Scaling : 4876MB/s
Addition : 4989MB/s
Triad : 4983MB/s
Data Item Size : 16-bytes / 128-bits
Buffering Used : Yes
Offset Displacement Used : Yes

 

[Duvie]

Numbers look good though worrisome how high some of them are....


Couple of other things to try...

1) Flash to latest bios if you haven't

2) raise the vagp to 1.6v

 

[genro]

bios is flashed to the latest , and tried agp to 1.6v and did no good

 

[Duvie]

Also go ahead and raise thevcore to 1.55 like you did and save it....when it restarts go into bios and then to pc health status or whatever it is called under the bios and watch the voltages there...see if it raised it accordingly...Since 1.525v means 1.58v actual a 1.55v should be in the 1.6-1.61 range....

 

[genro]

well the problem is when i raise the vcore windows locks, crashes and whatever.

Think i got a defective mobo?

Also i have been searching through forums from other sites and still can't find a question to my problem.

 

[Duvie]

Are you ocing through the bios or windows with some utility???

If you are doing bios then you should never make it into windows anyways before you hit del and go back in to view the voltages...

 

[genro]

no, doing it from the bios and yes the voltage does jump up, but i can have the cpu at 2.6 ghz and up the voltage to 1.55 and it causes windows to BSOD.

Also should i try the 1.7 ghz celery i have in it and try upiping the vcore a tad and see if it still BSODs?

 

[genro]

bump

 

[genro]

Figured out problem, the p4 2.6 hits the wall of 2925 mhz for me tried a 1.7 ghz celery and bump the voltage up a tad and it went to 2.22 ghz so the mb is fine.