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Q6600 Multiplier Problem When Overclocking

post #1 of 18
Thread Starter 
Hi.

This has happened to me once already and I originally thought it was temps causing it, but now I just don't know what's going on.

When I built my computer a month ago, I had bought a ASUS cooler. It would go up to 3.42Ghz fine, but when I tried to go farther then the multiplier with change back and fourth.

It would get 67C on the ASUS cooler at 3.51Ghz on Prime 95 and the multipliers would shoot down to x6 instead of x9. I turned off E1ST and C1E. The only thing for the CPU I have on is the thermal monitor. I eventually changed to my current TRUE.

Now, the temps at 3.6Ghz are ~61C and the multiplier is fluctuating again. I have no idea what could be causing this. This drops me from 3.6Ghz to 2.4Ghz, effectively eliminating my OC when using Prime 95 to test for stability.

I have gone through a couple of possible sources, but they don't seem to be the cause of it.

The power supply isn't the problem because on the ASUS cooler, I was getting the problem at 1.43V in BIOS with the ASUS cooler, but it was always a solid x9 with the TRUE. Now at 1.475 or so, it's happening again.

Heat isn't the problem because you can see the temperature difference that it's happening at.

Not so sure about the RAM. It's DDR2 PC-6400 which should work fine with my OC.

I don't think it's the chip either because it did 3.51Ghz on the TRUE when it couldn't on the ASUS cooler.

I'm completely stumped as to why this is happening. Please help.

Thanks for reading!
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post #2 of 18
try to clear cmos and try again if you disable cie and speedstep and are useing cpu-z it shouldnt fluctuate at all just mhz will tho,imo
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post #3 of 18
Did you update the bios recently with the overclocked settings? If so, restore default/fail safe bios settings and reflash.
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post #4 of 18
Thread Starter 
Quote:
Originally Posted by phillipjos View Post
try to clear cmos and try again if you disable cie and speedstep and are useing cpu-z it shouldnt fluctuate at all just mhz will tho,imo
The multiplier goes from 9 to 6 whenever I use Prime 95 at 3.6Ghz. I tested it with 3.51 which my ASUS cooler couldn't do and it was always 9x with my TRUE

Quote:
Originally Posted by ericeod View Post
Did you update the bios recently with the overclocked settings? If so, restore default/fail safe bios settings and reflash.
I did flash from F7 to F8b while overclocked at 3Ghz or around there. I guess I'll try that later. I might as well upgrade to F8f while I'm at it.
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post #5 of 18
Thread Starter 
Bump.

More input/opinions/replies and etc would be incredibly helpful! This problem seems very rare and looks like an isolated case.

Been busy all day, haven't had time to reflash at stock settings.
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post #6 of 18
Just to be sure; do you have the G0 revision Q6600?
(probably yes, since you bought it a month ago).

It does sound like Speedstep crapping out somehow, flashing your BIOS @ stock will problably fix that indeed (maybe you found a little bug in the BIOS rev your using ).
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post #7 of 18
Thread Starter 
Quote:
Originally Posted by Wattes View Post
Just to be sure; do you have the G0 revision Q6600?
(probably yes, since you bought it a month ago).

It does sound like Speedstep crapping out somehow, flashing your BIOS @ stock will problably fix that indeed (maybe you found a little bug in the BIOS rev your using ).
Just flashed from F8b to F8f. Everything is at stock except voltages for CPU/NB/FSB, my 9600GT, and Q6600 at 3.6Ghz. I'm still getting the same problem. Flashed to F8f from F8b after loading Fail Safe Defaults (Default/Stock settings).

Not sure if it's BIOS. Read first post and the whole ASUS cooler and TRUE thing. CPU-Z, Core Temp, and Everest says my Q6600 is a G0. Also the Intel box label had SLACR on it for the model/spec.

After exiting out of Prime 95 Small FFTs, the multiplier goes back up to 9x. While Prime 95 was running, it was at 6x.

Man, this is some confusing stuff right here...
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post #8 of 18
This is definatly strange

Well SLACR is the G0 revision, so that shouldn't be the problem, but if it isn't the BIOS... It does look like a heat problem if the rest is fine (since upgrading to a better cooler fixed the problem untill you up'd the voltage again => heated it up more).

I would also like to add that my QX6850 would be unstable if I ran it higher then 58C (rated up to 64C), so maybe you have a simular problem with heat making it unstable and doing strange things (even tho its rated up to 71C)...

Did you check your temps with different software tools? Some report lower or higher depending on your mobo/proc.
Try HWMonitor/CoreTemp/RealTemp/Everest and see if some of them report higher temps.
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post #9 of 18
SPEEDSTEP- Make sure that it is disabled. If it says that it is, but is still changing your multi. upgrade your bios, and that will usually fix it
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post #10 of 18
Quote:
Originally Posted by kdkavanagh View Post
SPEEDSTEP- Make sure that it is disabled. If it says that it is, but is still changing your multi. upgrade your bios, and that will usually fix it
Look up and read
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