Dual Core and Core 2 Duo

[MrCobra]

I see the OP is using Windows 2000. I believe Windows 2000 Professional has a 2 processor (dual core) limit. Therefore, a quad-core processor would violate the EULA. If it's Win2K Server, a quad-core processor would probably be allowed. I'm not sure how the processor limit works, but that's what I've heard...

The 2 processor limit is for the number of physical sockets on the board not the number of cores per chip.

About max CPU's. I thought that that it was a maximum of 2 cores, be they on one CPU or 2. I guess I was wrong... so it is legal to use a quad-core processor with Windows XP? Cool!

It's a maximum of physical CPUs sockets.

Edited September 2, 2007 by MrCobra

[nmX.Memnoch]

Windows 2000 doesn't know the difference between two cores and two physical CPUs. So it sees a dual core CPU as two physical CPUs. If you have a quad core CPU and run Windows 2000 (Professional), you'll have two cores that will never be used due to the two processor limit.

For that matter, Windows 2000 doesn't even make the distinction between virtual processors (hyperthreaded) and physical processors.