I heard XP home supports either ONE dual core processor or ONE single core
processor while XP pro supports up to two single core or double core
processors. In other words, XP home supports only ONE PHYSICAL processor,
but if that one chip has two cores in it, it's okay and it see's it as two
cores. If you install either home or pro on a motherboard where two cores,
physical or not, exist, XP really should see both cores. But if you had only
one core when you installed the OS and then changed that out for a dual core
CPU later, THAT is when it may not recognize the other core without you
doing some dinking or even reinstalling the OS.
Tyan Thunder K8WE
Dual Opteron 252s (2.6ghz)
4 gig Corsair XMS DDR400 RAM
XFX 7800 GTX 256 w/VGAsilencerV3
500 gig Hitachi SATA 300
160 gig Seagate SATA 150
Dual Dell 24" wide aspect LCDs
550W Antec power supply
X-Fi Platinum Soundblaster
"dawg" <don't > wrote in message
> "Kalvin McCormick" > wrote in message
> news:[email protected]
>> i just but together a asus a8n32-sli deluxe with amd 4200+ with windows
>> home sp2 installed
>> I installed the amd windows xp dual core drivers.
>> I show only one core in the device manager. it says it is an amd dual
>> x2 4200+ cpu under processors but only one shows.
>> the asus bios show the processor as an amd x2 4200+ cpu also.
>> Where is the second core?
> Doesn't WindowsXP have to be told in the beginning that it's either
> Uniprocessor or Multiprocessor system? Also,I remember hearing or reading
> that one of the differences between XP Home and XP Pro was that XP Pro had
> support for more than one CPU and XP Home didn't. Now that was a long time
> ago and lately this seems not to be the case.