I have a bit of a question.....Im upgrading right now to a XP2100, and purchased 512MBs of pc133 to go with that. It cost me $40. 512MB of DDR is 3x that cost....but how will it affect my performance? Like a great deal, to where its notice able when using my PC, or a fair bit where I'll get 5+FPS than using my PC133. I never really thought DDR was worth it, just because its 2x as much when buying a 256MB stick, and 3x as much when buying a 512MB stick...It just doesnt seem like the memory clock being 2x faster is really going to help...its ram, not a CPU. I know it plays a key part to diliver data to the cpu, but still, would pc133 be just fine? Im starting to regret getting the 512mb pc133, and thinking I should have got 256MB DDR for $20 more... <PS> This is my 100th Post!