I have a 2006 Mac. I bought it as I really really hate Windows 10 and so wanted nothing further to do with Microsoft. Trouble is, I'm a mad user of Second Life. This Mac only has an Nvidia GeForce 7300 GT Graphics card and I have a used ATI HD 5770 on order. I've read all the threads on upgrading a Mac 1.1 and must admit most of it is way over my head. All I really want is a decent frame rate when on Second Life At the moment it's choppy and about one or two frames a second. My Mac is a 2006 dual core 2.66 Ghz (Mac says it has 4 cores) Xeon 8GB Ram (should be 12 but one bank just isn't working), 1 TB HDD. Graphics as given above. Running Lion 10.7.5 How do I get the frame rate up? Is there something I can buy or add? A downloadable upgrade perhaps? I had to look up what an "SSD" was, so that gives you an idea of my computer knowledge. Any ideas would be great....... And a 3.1 Mac seems to retail around over $1500 on Ebay (in Australian dollars) so not an option. This one cost me $400 + $250 or the new (used) ATI card.