buying memory for an older computer can cost almost as much as buying a new computer ,so don’t fall into the money pit
Through upgrading anything on that pc. It is an Abit board, P4 2.8 with 4 g ram. Have 3 hard drives installed in a tower case but don't use dual boot. Bios changes with SATA drives works fine. My son uses it to surf the net and watch Netflix.
I'm using a Toshiba laptop with win 8.1.