You're better off getting the Athlon XP 2500+. The core frequency of the Celeron may be higher, but its FSB falls woefully short of that of the P4 (2.8 GHz models with FSBs at 533 and 800 MHz, as well as the "OEM" 400 MHz model, but with improved architecture), and its limited cache and poor floating point performance (especially in games/apps without SSE2 support) really kill it.