We just bought two new Dell computers:
Optiplex SX270 mini-formfactor
Precision 360
Both are Intel 2.4GHz P4, Intel boards, 800MHz bus.
Each has the new BIOS that allows me to boot off 64MB & 128MB USB sticks.

Thing is, these both have the same oddity - the BIOS reports one CPU. Windows thinks there's two. Device Manager, Task Manager, Winmsd, you-name-it. Windows is certain there are two CPUs. Device Manager says ACPI is "multiprocessor".

I'm guessing this is because of an architecture change. Could be the BIOS, the motherboard, the CPU,??? The computers are fast and operating without a problem.

Anyone else seen this with their new Dells or Intel boards?

p.s.
I was trying to post at Dell, but that's a joke! I wrote this entire post while waiting for the Dell logon to finish!