Task Manager only seeing two CPUs, Device Manager sees 8 for my new i7 950?

[JayAre]

Just installed a new mobo, Gigabyte X58 USB3.

New CPU Intel Core i7 950 in and everything working, drivers installed etc.

Device Manager can see 8 x CPUs (4 cores hyperthreaded).

but Task Manager doesn't.

Any ideas?

 

[JayAre]

Found it.

When launching msconfig, Boot Tab, Advanced Options I noticed Number of processors was checked and 2 was selected.

So, just unticked Number of processors and rebooted and voila. I'm up to 8.

I thought my Windows Experience figure should have been better!

 

[garyfl]

good to know mate thanks for the info, quite handy tbh, you learn something new everyday

 

[tommytinkle]

Hey mate,

Take it you didn't format/clean install? That can cause that problem as its still set to an old configuration.

 

[rush_syndrome]

Hey mate,

Take it you didn't format/clean install? That can cause that problem as its still set to an old configuration.

Not true. Plug and play will look for those cores once that "Number or Processors" box is unticked.

There is absolutely NO NEED to reformat/install windows again.

 

[tommytinkle]

Not true. Plug and play will look for those cores once that "Number or Processors" box is unticked.

There is absolutely NO NEED to reformat/install windows again.

Where did I say that you couldn't do it without a reformat? I simply asked if you'd bothered to read if he had just put new hardware in an existing install without doing anything.