In comparison with other popular operating systems such as Windows 7 and Mac OS X, Windows XP has relatively low system requirements. This means that virtually any AMD processor currently in production will work with XP. The Phenom line represents AMD’s top tier of products when it comes to processing power. As such, any Phenom processor is more than adequate to run XP.
The minimum processor speed for Windows XP Home and Professional is 233 MHz. At 1800 MHz (1.8 GHz), even the slowest processor in the current Phenom lineup is more than adequate. According to Gateway, the XP calls for either an AMD K6, Athlon or Duron processor. These represent low-end to mid-range processors, none of which run as fast as Phenom series units.
Different versions of Windows XP allow for different numbers of processors. Windows XP Professional can support two processors, Phenoms included, while Windows XP Home can only support one.
XP’s 233 MHz system requirement is the slowest possible processor speed that will run the system. Gateway recommends at least a 300 MHz processor, but even at this speed, the system would provide a sub-standard user experience and would not be adequate to run many modern applications. In this respect, Phenom processors should not be considered excessive or “overkill” for XP-based systems. In general, they will run the operating system and applications smoothly and reliably.
32 vs 64 bit
Windows XP is available in 32 and 64 bit versions. While some AMD processors only support one version or the other, all Phenom processors work with either 32 or 64 bit systems. Provided your other system components — such as RAM, hard drive and video card — meet XP’s requirements, the system should run well on a Phenom-based machine.