Overclocking CPU in Vista Ultimate 64 Bit Edition

rmk2002 · 3 Jun 2007 at 16:17

Hi, I have an Intel Core 2 Duo 2.13Ghz chip that is overclocked to 3.2Ghz

. When I boot into xp pro, this overclock is reflected in the processor details however when I boot into Vista Ultimate 64 Bit Edition it says my CPU is running at default 2.13Ghz. Even when checked using CPU-Z a speed of 2.4Ghz is detected. Surely Vista cannot throttle back my chip can it? :confused:

Deluxe1 · 3 Jun 2007 at 16:41

I`m running the same edition of Vista as yourself and havent encountered that problem.

Jaffa_Cake · 3 Jun 2007 at 17:33

The Core2Duos automatically underclock themselves by lowering the multiplyer.

May be this, check the multiplyer on both OS's.

bledd · 3 Jun 2007 at 18:26

didn't know they did that, that's cheeky!

meths · 3 Jun 2007 at 21:43

Jaffa_Cake said:
The Core2Duos automatically underclock themselves by lowering the multiplyer.

You can generally turn this off in the bios. It's under 'C1E Function' on the DFI 975x/g Infinty but I don't know about any other boards.

Scottland · 3 Jun 2007 at 22:01

Vista also detects the default speed I think

Deluxe1 · 3 Jun 2007 at 22:11

Scottland said:
Vista also detects the default speed I think

Didnt for me my overclock ran fine right from the start.

stoofa · 3 Jun 2007 at 23:03

Do you mean the Window that by default pops up in the middle of the screen everytime you boot?
Mine for example says Intel Core 6600 @ 2.4Ghz however my CPU is clocked at 3GHz.
That screen is not detecting the speed, it is simply detecting the CPU model.
Intel include the default speed of the CPU in their model identification string - because their CPU's are so easy to overclock they were worried people would be mis-sold products.
I could for example buy a 1.8GHz Core2, clock it to 2.67GHz and sell the whole thing for a lot more.
However this way the correct/default ID for the chip is displayed.

Boot your PC and immediately go into Control Panel>System and that should display the real current speed of your CPU.

Scottland · 3 Jun 2007 at 23:09

stoofa said:
Do you mean the Window that by default pops up in the middle of the screen everytime you boot?
Mine for example says Intel Core 6600 @ 2.4Ghz however my CPU is clocked at 3GHz.
That screen is not detecting the speed, it is simply detecting the CPU model.
Intel include the default speed of the CPU in their model identification string - because their CPU's are so easy to overclock they were worried people would be mis-sold products.
I could for example buy a 1.8GHz Core2, clock it to 2.67GHz and sell the whole thing for a lot more.
However this way the correct/default ID for the chip is displayed.

Boot your PC and immediately go into Control Panel>System and that should display the real current speed of your CPU.

That's precisely what I meant, but couldn't be bothered to type