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Help from experienced oc'ers please

D13

D13

D13

Associate
Joined
4 Oct 2008
Posts
989
Hi all

I am very new to oc'ing, basically I am using an e8500 combined with Foxconn P45a

What I need to know is how do you diagnose errors in prime 95, ok so the vcore is at 1.23 I think and the fsb at 400 and ram about 800.

Prime 95 ran for about 10 mins and reported hardware failure something something, do i need to up the voltage? Is the ram holding me back?

What should I do next other then reduce the clock (it's only at 3.8 I really hope I can at least manage that, for about six months it's been at 3.6 at stock voltages before I decided to give it another go).

thanks
 
you'll need to post your full system specs, and more bios info, incl RAM freq, also what is the Vid of your chip, use coretemp to check
that being said it prob is your CPU voltage, knock it up a bit, you should be able to get 4 without too much trouble
 
Not sure on that motherboard but I use 1.325v for 4GHz. I have to use about 1.38GHz for 4.2 which is stable but much hotter. So I leave it at 4Ghz
 
thanks for the replies guys, I further increased the voltage this morning to about 1.3, ran prime for about an hour and no errors reported, when i get home I will run prime some more.

I will try and get that information you requested, the board I am using is very very simplistic, I never see the options that appear in e.g asus bios guides.
 
need to specify what test you running in prime as well before we can tell you which volts to bump as well
 
If you're running the small FFT test, chances are it will be the CPU volts that need increasing.

If it's the large FFT test (blend), chances are it will be the RAM/Northbridge volts that need increasing.
 
If you go much higher than 400MHz fsb your RAM may become unstable with the higher clocks (yours is only rated as 800MHz). You'll probably have to loosen the timings or increase the voltage to get it to run at higher frequencies, or maybe just alter the divider in the BIOS to get it to run at a lower frequency again
 
mrthingyx said:
If you're running the small FFT test, chances are it will be the CPU volts that need increasing.

If it's the large FFT test (blend), chances are it will be the RAM/Northbridge volts that need increasing.
Click to expand...

Ducky Spud said:
If you go much higher than 400MHz fsb your RAM may become unstable with the higher clocks (yours is only rated as 800MHz). You'll probably have to loosen the timings or increase the voltage to get it to run at higher frequencies, or maybe just alter the divider in the BIOS to get it to run at a lower frequency again
Click to expand...

thanks guys, these comments are really helping me get a bigger picture of what I should do next and how to diagnose what is holding me back
 
ok i was running the blend test when the errors were reported.
I just upped the vcore slightly and i'll leave prime on while im out.

One other thing I notcied is that from a cold boot, the fans will spin up, die down and then the pc will boot normally. Is this a well known symptom? what might be causing that?
 
donw worry about it, that seems to happen on quite a few of the newer builds, mine included at times, not entirely sure why (charging capacitors or something maybe) but no harm
 
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