Your best choice would be a new motherboard. your current one doesnt support either of the cpu's you mentioned, as it doenst support 133/266 FSB. Like I suggested in another thred with the exact same question, get an ECS K7S5A motherboard for $52 (US$). It will take your sdram, and any Athlon XP.
If you insist on upgrading your cpu, buy the 1.333 if its unlocked, or unlock it and run it at 100x13 or 100x14 (not the default 133x10). Dont expect any miracles though
= The views stated herein are my personal views, and not necessarily the views of my wife. =
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