This is my motherboard, Asus M2N SLI Deluxe: http://www.newegg.com/Product/Produ... This is 4GB memory on sale, seems like a good deal: http://www.newegg.com/Product/Produ... This sounds dumb, but when I use NewEgg's little search tool to find RAM compatible with my hardware, the 4GB memory doesn't show up. Should I not get it? I was originally planning on buying this 2GB RAM: http://www.newegg.com/Product/Produ... (Although to my untrained eye it appears to be the same kind as the 4GB, just smaller and a different brand.) Please advise. I obviously am clueless.

You shouldn't have any problems with the Corsair 4GB (2 x 2GB). Your board has 4 memory slots & accepts up to 8GB max, meaning 2GB per slot. Just be aware that since you're running XP 32-bit, only about 3GB will be recognized by the OS. With Asus boards, it tends to end up being 2.93GB. http://usa.asus.com/products.aspx?m...

OK. Thank you. That seems a little wasteful that it can only recognize 3 of the 4GB. I could just buy 2 GB, but I don't know if I should mix it with the current 1 GB stick of RAM I'm using now. It might be best to get all new RAM and just go for the 4 GB. If I ever upgrade Windows, I'll have that extra gig, I guess!

Considering the way RAM prices are right now, it's generally best to just get 4GB (2 x 2GB) to keep the system running in dual channel mode. The next best option would be 3GB (2 x 1GB + 2 x 512MB). http://www.computing.net/howtos/sho...