Confused! CPU Speed saying 3 different things?!

Skeeter

Skeeter

Skeeter

Caporegime
Joined
8 Mar 2007
Posts
37,146
Location
Surrey
Hi

My PC (in sig) is playing silly buggers with me and im utterly confused.

As stock my CPU runs at 2.13Ghz with an FSB of 266Mhz

Ive over clocked it to 3.2Ghz by simply upping the FSB to 400, and its run happily at this speed for well over a year. Occasiaonaly when it boots it will restart and loose my overclock, or sometimes if we get a power cut, but it was as simple as just putting the OC setting back and it worked.

Today I turned it on and the BIOS boot screen showed the stock 2.13Ghz (8x266Mhz) speed, so I entered the BIOS and put back in the 400Mhz speed, and rebooted, but now the BIOS boot screen is showing 2.14Ghz (8x267Mhz) which is random and wrong. So I went back into the BIOS, and the BIOS settings show a 400Mhz FSB and that the CPU is set to run at 3.2Ghz... so i log into Windows and CPUz reports 2.13Ghz (8x266Mhz)... Im confuzed!

The BIOS is set to one thing, the boot screen is showing another, and CPUz is showing different again!

Im all confuzled!
 
The correct stock speeds, 2.13Ghz @ 8x 266Mhz

CPUz is what I belive to be correct, meaning the issue may be with the BIOS. But I dont understand how it can be set to something, show another, yet run at a completely different speed!
 
Try a lower overclock or little more on the voltage, looks like your overclock is not stable.
 
RJC said:
Try a lower overclock or little more on the voltage, looks like your overclock is not stable.
Click to expand...

Ive tried some lower overclocks, and ive reset the BIOS and updated the BIOS, yet whatever OC I do, the BOIS just seems to go from 266 to 267Mhz....

Usually when I try a bad Oc, it trys to boot, fails, and then boots with the stock, but its just booting fine now, just without actually overclocking....
 
I think he means try soemthing basic. See if anything works. Set FSB at 270MHz, see if it shows in BIOS, then move to Windows and CPU-Z. If so go from there. From 267MHz to 400MHz in 1 step is way ambitious, you need to work up. As the saying goes, you need to learn to walk before you can run. You need to know what works and such. Chances are you need to work upto 400MHz FSB as it may need tweaks to voltages for the board to be stable there.

And also, to be pedantic, your sig is wrong, since its not running at 3.2GHz :P
 
dillingerdan said:
I think he means try soemthing basic. See if anything works. Set FSB at 270MHz, see if it shows in BIOS, then move to Windows and CPU-Z. If so go from there. From 267MHz to 400MHz in 1 step is way ambitious, you need to work up. As the saying goes, you need to learn to walk before you can run. You need to know what works and such. Chances are you need to work upto 400MHz FSB as it may need tweaks to voltages for the board to be stable there.

And also, to be pedantic, your sig is wrong, since its not running at 3.2GHz :P
Click to expand...

Ive done all the small increases and testing a year and a half ago when I first OCed the machine. Its been rock solid apart from my BIOS mysteriouly resetting itself occasionally. But its suddenly stopped letting me OC at all. I tried 300Mhz and it still reverted to 267.
 
Thats my next aproach. CBA with it now but when I get time over the weekend im gonan proepr reset the BIOS with the jumper and see what that does.
 
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