Probably answered this somewhere else. Skip the ddr3, which doesn't improve the 775 enough to use now, unless you sell your old ddr2. If you sell it and want to change now, DFI has an x48 board for $110 at newegg that should work fine. For your old ddr2, checkout the Foxconn ELA p45 board for around $83 shipped at newegg. Alot of standard features for the $$.