Here is a list of compatible CPU's... http://processormatch.intel.com/COMPDB/SearchResult.aspx?Boardname=dq965gf
. It looks like your best option is finding an old Q6600 for it. As for the GPU, any current GPU will work on the MOBO since it is PCI-e x16. The best current GPU out is the ATI 5970, but I won't go higher than an ATI 5770 for a board like this one.
Why do you want to get this board or are you wanting to try and update it??