Buying for the future is always a mistake IMO. I've done it in the past and by the time the program came out that supported it, I was horribly behind the curve (thinking specifically of Doom3). By the time you will get a significant advantage from the quad core, the price will be a fraction of it's current cost. If you need the power now, then go for it! If you don't see needing the power for at least the next year, hold off and get something affordable now that can do what you need today. On the other hand, if you are looking to build a HTPC rather than a cabinet, that's different. In an HTPC you will be running multiple applications at the same time. A lot of those apps are processor heavy and can benefit from multiple cpu's. In the case of a cabinet, you are going to be running one application from a FE. If the FE is nice, it will cut back it's system resources while it's idle (GameEx does according to what Tom said in another thread). That means that you won't see a significant advantage UNLESS the emulator/application specifically uses multiple cpu's. AND, as far as I know, no emu/app currently uses more than 2 cpu's (at least that would be run on a cabinet). Conclusion: If you have the need for quad core and money to blow, get it now. If you don't need it now and/or you don't see the need to throw money away (sorta), then get a good dual core system. You will see more benefit from going 64-bit for your OS than you will going quad over dual core AFAIK.