Your computer will only be as fast as its weakest link. Due to the limitations of your aging computer you won't even get close to full speed out of a new SSD no matter what you do. I build A/V production & gaming computers and have a fairly good working knowledge from 15+ of hands-on experience of what's needed to get the absolute most performance out of hardware. If your time is worth money to you then you're going to have to upgrade to much newer and faster hardware. I have customers that ask for magic solutions to make their old computers do things they weren't designed to do and my answer to them is there is no magic solution, they'll have to upgrade to get their desired results. The Intel i7 4790K & Z97 platform is my current recommendation for budget customers and the 5930K or 5960X & X99 platform for those who can afford them.