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Overclocking Pentium 4 540 - no change?!

post #1 of 3
Thread Starter 
Since my Super Pi 1M results on 3.2GHz Pentium 4 540 are somewhat disappointing 45.172 - 44.157sec:
Super_PI_Pentium_4_540_45_172sec.jpg ... Super_PI_Pentium_4_540_44_157sec.jpg

So then I tried to overclock it a little. It is 200x16 = 3200MHz by default. The only one CPU tweak the MSI PM8M3-V mobo offer is the - after I unclocked it in the bios - FSB. 210MHz FSB post, yet failed to boot into Windows 2000 SP4, claiming that ACPI fail. Lol. 208MHz worked, booted and run SuperPi and CPU-Z validations:
http://valid.canardpc.com/uv65p3
http://valid.canardpc.com/37epge

So, a 3328MHz compared to 3200MHz = I hoped to gain something. But the SuperPi result was disapointingly low - 44.078sec...!!!
Super_PI_Pentium_4_540_44_078sec.jpg

So, all the overclocking get me from 44.157sec to 44.078sec redface.gif
I know that this is just a little 104% overclock, but 4% from 44.157sec is 1,76628 sec - and that I hoped to gain. Instead I gained 0,079 sec.

1,76628
0,079

Hmmm. This is disproportional. Anyone can explain me this, or *** is going on?!
post #2 of 3
4% gains of mhz don't necessarily mean 4% better performance. Tons of other factors in play here.
Also 100mhz increase is almost nothing.
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AMD Phenom II X4 960T 870 Extreme3 R2.0 AMD 280x 12gb G..Skill 1333 mhz DDR3 
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120gb Intel 520 ssd + SAMSUNG 150 GB + Samsung... TSSTcorp CD/DVDW SH-S182M ATA D Xigmatek S1283 Windows 8 x64 
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post #3 of 3
Thread Starter 
True. This o/c is laughable at best. However I was under the impression that SuperPi results are driven by CPU-only power tongue.gif

I cool my chip well, so... what this could be? rolleyes.gif

MSI_PM8_M3_V_caps17.jpg
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