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Q9650 & Super Pi = 28 seconds!!!!? WTF

Chaapa'ai

Chaapa'ai

Chaapa'ai

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Joined
28 May 2004
Posts
531
Location
The US of A
I've got some problems here. I have successfully overclocked from 3.0ghz to 3.6 ghz stable w/ prime95 for 24 hours (away on trip) but for some reason Super PI at 1M calc completes in a massive 28 seconds?! When it was at 3.0ghz stock it completed pi 1m in 19 seconds. Ram is at 800 mhz 1:1. Stock core voltage @ 1.2750.... Am I missing something?

Untitled_8.jpg

everest.jpg
 
Temps never go above 55c as it's at stock vcore. While running super pi , none of the cores ever hits above 80%.... not sure why. I have disabled EIST, and THERMAL monitoring so even at idle it doesnt down-clock or reduce the multi.

Very baffling.
Goksly said:
Overheating / throttle?
Click to expand...
 
Very odd indeed. For a 28s Pi 1M with a 45nm 6mb L2 core, it must running south of 2.0GHz!

Have you got the latest BIOS for your P35 board? If you were to increase the clockspeed of the CPU gradually, what's the trend in Pi 1M scores? Do any other apps suffer a performance hit at 3.6GHz?
 
Is it possible that despite what core temp and cpu-z are telling me that my multiplier is dropping from 400 X 9 to 400 X 6 or 2.4 ghz? This is such a strange chip.... perhaps if I upped the vcore to 1.4 in the bios it will help. With vdroop that should be below the 1.36 that intel says is the recommended max. Any other ideas?
 
Now you know how AMD owners feel when they run SuperPI :D

More seriously you need to reset the CMOS and run stock to get a baseline.
Then slowly increase your FSB, check with SP to make sure scores are getting quicker not slower.
 
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Your mem bench looks really terrible, but I still don't think that could account for a 28sec run.....
 
I'm really at a loss here. I've tried everything I can think of... going back to stock speeds, resetting bios, upgrading the bios to latest ver... nothing helps. Only thing that seems steady is the higher the cpu speed and fsb the worse the benchmarks. I can only surmise this must be a mobo issue not able to handle the Yorkshire. Sigh.
 
Guys, new question related to my problem. Is it possible that switching out a Q6600 for the Q9650 without reinstalling windows or upgrading any system drivers is to blame? I know for a mobo swap you need to reinstall windows but for a cpu swap I didnt think it was necessary.
 
Clutching at straws here but have you got any other memory to try, or could you try swapping yours into the other slots.

Maybe try looking at your advanced memory timings (Ctrl+F1). As Gurusan said earlier your eversest benchmark looks poor esp. Memory read, copy and latency.

Static tRead Value (tRD set to 8)

Set memory to +.01 volts
 
Just seen your new reply, read thread again can't see that you have cleared cmos, if you havent try that.

Check in MSCONFIG (type in Windows search box) Boot Tab Advanced options that number of processors is 4.
 
hairydave said:
Clutching at straws here but have you got any other memory to try, or could you try swapping yours into the other slots.

Maybe try looking at your advanced memory timings (Ctrl+F1). As Gurusan said earlier your eversest benchmark looks poor esp. Memory read, copy and latency.

Static tRead Value (tRD set to 8)

Set memory to +.01 volts
Click to expand...

Thanks for the ideas. I will set that tRead value later when I get home. I am also going to try reinstalling my old Q6600 and see how that goes. Stay tuned. ;)
 
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