The plain A7V cannot support any of the Athlon XP processors, since those processors require a CPU front-side bus speed of 133MHz (266DDR) - and the A7V uses the original VIA KT133 chipset, which supports PC133 SDRAM but not a 133MHz/266DDR CPU front-side bus (the CPU front-side bus support is limited to 100MHz/200DDR).
The A7V133 (the full model number of the newer KT133A chipset-based Asus motherboard) can support Palomino-core Athlon XP processors up to a 2100+ - but only certain PCB and BIOS versions can do so.