Intel Pentium - multitasking
AMD Athlon - for gaming

My PC's spec:

P4 3.0
MSI 865PE Neo2-p
512 RAM
MSI FX5500 256MB 128 bit

AMD Athlon 2.8
MSI K7N2 Delta/MSI KT6 Delta
512 RAM
MSI FX5200 128MB 128 bit

Gamit ko sa gaming for 4 years now. No problem so far.

BTW I'm using branded memory and power supply.