-It's got a 305 Watt P/S.
-Can handle a AMD Athlon™ 64 X2 dual-core, Athlon 64,or a Sempron™.
-Factory BIOS does not allow for overclocking
-1 Gig of Memory is fine unless you want to install Vista in the future or you are doing high end graphics or video editing. Getting 2 Gigs might be worth doing now, but not necessary.
-If you already have a burner, then go ahead and just get an adapter.
Here's the link so you can decide how you want to order and how much it will cost you:http://www.dell.com/content/products/features.aspx/cto_dimene521?c=us&cs=19&l=en&s=dhs
I hope this helped.