Weird stuff happening w/ my new 2.4C M0...cpu temps aren't increasing in Prime???

ferrarifreak93

Senior member
Feb 21, 2003
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Well I'm at 12x295=3.54GHz, 1.65v and I'm running two instances of Prime (ver 23.2.1). When I run the torture test my cpu temp isn't increasing, it actually decreases sometimes. I'm using MBM5 and I know the sensor is set up correctly b/c it worked with my last 2.4C. Another thing I noticed is that my cpu usage meter in Windows Task Manager isn't showing near 100% cpu usage when both instances of Prime are running where with my last 2.4C the cpu usage was near 100% under Prime. What IS the deal? Maybe I should d/l a newer version of Prime?

EDIT: just downloaded the latest Prime, cpu usage is still at max 40% (for like a sec).
 

MDE

Lifer
Jul 17, 2003
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Are you running two instances of P95? That's the only way to get a P4C to 100% with HT off.
 

aggressor

Platinum Member
Oct 10, 1999
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Try setting the speed back to 2.4c and testing again. If it stops, it might be something to do with your overclock.

Also, I have had issues with the latest Prime95, the latest that worked correctly for me was version 23.5.1.
 

ferrarifreak93

Senior member
Feb 21, 2003
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Originally posted by: MonkeyDriveExpress
Are you running two instances of P95? That's the only way to get a P4C to 100% with HT off.

yeah, read my first post, "...running two instances of Prime..."
 

MDE

Lifer
Jul 17, 2003
13,199
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Sorry, I didn't see that. I'd try Aggressor's suggestion though.
 

Duvie

Elite Member
Feb 5, 2001
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I run good old tried and true version 22 still...I notice some weird stuff with version 23.7 so I would recommend 23.5 or newer version 23.8.....

I am at 3.5ghz or 292fsb but I have ran it at 295fsb and prime95 held 100% with 2 instances.....

Are you running two instances of P95? That's the only way to get a P4C to 100% with HT off.

Actually you have it backwards....That is the only way to get 100% with HT TURNED ON.....With it off you get 100% with 1 instance....
 

ferrarifreak93

Senior member
Feb 21, 2003
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Man this is messed up! I was stress testing w/ 2 instances of Prime at 3.36Ghz. THis is what happened.

1. I start two instances of Prime, in Windows Task Manager I get around 10% CPU Usage when Priming. I let it run for like 10 minutes then manually stop the testing.

2. I restart the test (in both instances of Prime). In Windows Task Manger I now get up to 100% CPU Usage (where it should be) when Priming and then I get an error in around 10 seconds.

BTW, I set my cpu back to default everything and it did the same thing except in didn't fail in step 2 above.
 

aggressor

Platinum Member
Oct 10, 1999
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Find Prime95 version 23.5.1 and see if that fixes your problem. I have had problems with the newer ones myself
 

myocardia

Diamond Member
Jun 21, 2003
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Originally posted by: ferrarifreak93
Man this is messed up! I was stress testing w/ 2 instances of Prime at 3.36Ghz. THis is what happened.

1. I start two instances of Prime, in Windows Task Manager I get around 10% CPU Usage when Priming. I let it run for like 10 minutes then manually stop the testing.

2. I restart the test (in both instances of Prime). In Windows Task Manger I now get up to 100% CPU Usage (where it should be) when Priming and then I get an error in around 10 seconds.

BTW, I set my cpu back to default everything and it did the same thing except in didn't fail in step 2 above.
That means that, assuming you want a 100% stable system, you need to start at slightly less than 3.36ghz, and if it still fails, reboot and try again at a slightly lower fsb.
 

beatle

Diamond Member
Apr 2, 2001
5,661
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Originally posted by: ferrarifreak93
Originally posted by: drewdogg808
did you set the memory usage right for each instance of prime?

No, where do I find this?

Under Options/CPU. I usually set mine so I have about 100 megs free on my 1 gig system (445 megs per instance). This way there is minimal paging to the harddrive, which slows the computer down and doesn't allow prime to stress fully.
 

ferrarifreak93

Senior member
Feb 21, 2003
339
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Originally posted by: myocardia
Originally posted by: ferrarifreak93
Man this is messed up! I was stress testing w/ 2 instances of Prime at 3.36Ghz. THis is what happened.

1. I start two instances of Prime, in Windows Task Manager I get around 10% CPU Usage when Priming. I let it run for like 10 minutes then manually stop the testing.

2. I restart the test (in both instances of Prime). In Windows Task Manger I now get up to 100% CPU Usage (where it should be) when Priming and then I get an error in around 10 seconds.

BTW, I set my cpu back to default everything and it did the same thing except in didn't fail in step 2 above.
That means that, assuming you want a 100% stable system, you need to start at slightly less than 3.36ghz, and if it still fails, reboot and try again at a slightly lower fsb.

I don't think you understand. The first time I run two instances of Prime, it passes. If I manually stop the tests and restart them it fails within 10 seconds.