I getting a used 2800+ 333 of ebay. I know its not the latest. But it is 333mhz. My board will take it. But I'm still using 266 ram. I forget do I have to get 333 ram? Or can I use the 2 512mb 2100 266 ram I have? It'll be a little bit slower. But will it still work or do I have to get 333 ram?

Or I can under clock. The bios allows me to set the cpu at 100, 133, or 166. Don't know if under clocking is safe. I know overclocking is not but under clocking?

ivnj

underclocking is very safe, it actually might increase the lifespan of your parts. you can use the 266mhz RAM. But when you can, i reccomend buying some DDR333, as it is much faster than the 266mhz.