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Old 04-16-2010, 09:18 AM   #1
nhcarpenter
 
Join Date: Mar 2010
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Question Why CPU # discrepancy in device mngr?

Hello all,

I bought a tower with a power suply, mother board and hard drive installed. Then put in my own GPU, Sata drive and wireless, (yes 1st attmpt at building a desktop).

Question is when I open the device manager (windows 7)why is a four core CPU listed eight times?

The CPU is an Intel Xeon w3520 @ 2.67 Gz. Looking it up, it's listed as a quad. Just to be sure i checked my laptops and sure enough both dual cores show 2 listings of the CPU in device manager.

Does it have to do with hyperthreading, perhaps?

Having no issues, just looking for better understanding, thanks a lot - Brian F
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Old 04-16-2010, 09:31 AM   #2
sooNAHmee
 
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Yes, hyperthreading is the reason each core shows up as 2 cores in device manager. "Virtual Cores".
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Old 04-16-2010, 09:34 AM   #3
madpistol
 
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Nothing to worry about. It's how the processor works. You've still got 4 cores, but each one is capable of running 2 threads into it. Thus, Windows sees it as an 8 core processor even though you've only got 4.
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Old 04-16-2010, 09:38 AM   #4
nhcarpenter
 
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Thumbs up Thanks

Thank you folks for clearing that up.

That was my guess, but it's nice to confirm.

Have a great rest O' the day - Brian F
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