If the board still works, I would not change it and add a separate graphics card instead, such as the 210 or 5450 (both might work with your power supply). Your windows coa may not post with a non acer board. If you change boards, any g31 and some g41 boards using ddr2 will work, but you won't gain any performance advantage. My local craigslist had a q8200 for $49 yesterday; you might look for a cpu upgrade instead, but you have an older nvidia chipset board, so the newer cpus may not work. You don't need a 32 bit board; that only refers to your windows installation. Most newer cpus will run 64 bit windows.