Yeah, I’ve got a 2.5 GHz Intel Core i5. Graphics card is a AMD Radeon HD 6750M 512 MB. And yeah, even with proxies FCPX is almost unusable on my machine.
I know it’s hard to say without using the computer yourself, but in your opinion, would it be better to sell my imac and buy/build a new system (I’m going to be doing a lot of compositing for the next couple years, and need a fast machine) or could I just upgrade the internal hd and fix most of my problems?