I would be reluctant to tinker with any "Time" computer. The older ones weren't put together that well and those that I have seen have cheap mobos. You can put more memory in it and that will certainly help. Most likely it will be dram and the bios will support at least 512. The graphics card isn't going to be up to much so you may well be on to a loser. You must check the ram first and match it. Dram can be mixed but some mobos will just run the first bank if they aren't matched.