O'clocking & SETI

[Cleanoldman]

P4e @ 3.2 ghz Prescott Socket 478
o'clocked to 4.08 ghz(255 mhz clock), 1:1 ratio
mobo has 865pe NorthBridge
Video is ATI 9000 Pro
1 gig ram(2x512)
Processor temp at 100% load is 57c with home made water cooler.

I use Super Pi to test speed. Using 2 million, it shows 82 seconds starting at 220 mhz clock speed. Increasing to 255, it's still 82 seconds.
What's going on here?? Am I limited by the chip set?? Or something else??
I'm not interested in gaming. Only interested in doing SETI & protein folding in shortest possible time.

 

[sandorski]

Since you're doing SETI/Protein folding(Predictor?), bench those instead.

 

[Leper Messiah]

Originally posted by: Cleanoldman
P4e @ 3.2 ghz Prescott Socket 478
o'clocked to 4.08 ghz(255 mhz clock), 1:1 ratio
mobo has 865pe NorthBridge
Video is ATI 9000 Pro
1 gig ram(2x512)
Processor temp at 100% load is 57c with home made water cooler.

I use Super Pi to test speed. Using 2 million, it shows 82 seconds starting at 220 mhz clock speed. Increasing to 255, it's still 82 seconds.
What's going on here?? Am I limited by the chip set?? Or something else??
I'm not interested in gaming. Only interested in doing SETI & protein folding in shortest possible time.

It throttling, I'll about bet you.

 

[Cleanoldman]

I have throttling turned off in BIOS.
Also, at slower speeds (220 & 225 mhz) temp is only 51c.

 

[GuitarDaddy]

You are leaving out an important variable (Ram speed), SuperPI unlike most everything else loves fast Ram bandwidth. So if you running a divider to reach 255 or loose timings that would explain your results

 

[Cleanoldman]

Ratio is 1:1
Ram is Corsair TwinX1024-4400C25
CAS is 3-4-4-8 It won't boot with any faster CAS settings, even at 220 mhz clock.
PSU is OCZ Power Stream 520 Watts