What does this mean? (Prime95)

davedudes · 13 Mar 2010 at 19:19

I picked the second option in prime within a matter of mins this error came up
FATAL ERROR: Rounding was 0.5, expected less than 0.4

Hit the first option ran for 1hr 30mins no error. Im at 4.2 on a E8400, not had a bsod, restart or shut down all I get is the above error with the second option :confused:

You think I should ramp my vcore up a tad?

Here is the cpu-z reading :

Any more info needed ill get.

Cheers

Frozennova · 13 Mar 2010 at 19:40

Thats due to your cpu being unstable on calculations a slight vcore increase should resolve the issue

davedudes · 13 Mar 2010 at 19:43

frozennova said:
Thats due to your cpu being unstable on calculations a slight vcore increase should resolve the issue

Thanks, ive been racking my brain all day, trying different things, will try to up the voltage tomorrow

davedudes · 14 Mar 2010 at 10:56

Tried Blend in prime 95 fails straight away, then tried small FFTs option it ran for a couple of hours no problem

Jokester · 14 Mar 2010 at 10:59

It's more likely to be a FSB/NB/RAM issue in that case.

davedudes · 14 Mar 2010 at 11:17

Jokester said:
It's more likely to be a FSB/NB/RAM issue in that case.

Ok ill look into that, cheers.

Jokester · 14 Mar 2010 at 11:57

davedudes said:
Ok ill look into that, cheers.

Try running Memtest, should show up if it's a RAM/NB issue.

setter · 14 Mar 2010 at 12:08

What voltages are you running through the NB and FSB TERM (vtt)? I found with my q9550 at 3.8ghz, i could pass hour after hour of small fft with minimal adjustments on NB and VTT, with blend i had to raise both of theese to 1.26, (you may need more with 8gb of ram), also switching "cpu margin enhancement" from optimized to performance helped as well, board used was also a p5q deluxe.

davedudes · 14 Mar 2010 at 12:48

Im stable at 4Ghz, voltage Dram 2.12, NB 1.28, cpu voltage 1.33

davedudes · 14 Mar 2010 at 14:01

Im not getting any crashes or restarts in windows seems to be running fine at 4.2, its just when I use p95, I keep getting this error : FATAL ERROR: Rounding was 0.5, expected less than 0.4

miniyazz · 14 Mar 2010 at 14:09

So: supposing you were doing something that wasn't checking for errors. For example, encoding a video. That means every now and again, you'll be happily encoding, and then you'll insert an error into the video because your CPU just made a mistake and didn't realise. The only reason you haven't had a BSOD is because thus far, the error hasn't been significant enough to crash your system.

davedudes · 14 Mar 2010 at 17:17

Just tested for about 3 hours @ 4.05GHz no problems, got a headache so im giving up for today

.

scooby555t · 14 Mar 2010 at 22:16

setter said:
What voltages are you running through the NB and FSB TERM (vtt)? I found with my q9550 at 3.8ghz, i could pass hour after hour of small fft with minimal adjustments on NB and VTT, with blend i had to raise both of theese to 1.26, (you may need more with 8gb of ram), also switching "cpu margin enhancement" from optimized to performance helped as well, board used was also a p5q deluxe.

can you give me your settings for your mobo am having problems getting my q9550 stable on prime at 3.60
thanks