What are you not happy with? Rendering speed? System performance? And what would you consider to be "good speed"?
My last computer was an i7 with 24GB RAM and it was able to do everything I threw at it. If you could provide some examples of the type of work you're doing and what problems you are experiencing, maybe we could be of more assistance, but if you're using an i7 with 32GB RAM and you're having trouble, I can only assume it's your video card.