Wow, four posts during my slow typing.
First sorry for your loss and understand the personal importance. I am sure a much more qualified person for folding will be along shortly (and already has now). But just a question that may help. Are you buying or building a new computer for your CPU upgrade or wanting to just try and upgrade your existing cpu or add a new graphics card? Not sure if either of the upgrade paths are still possible except in the used market (different sockets for CPU and slots for GPU). While I have not keep up with newer generation graphics cards, I am guessing most modern cards now use newer card slot formats (older to newer ISA, AGP, PCI, PCI express (1,2,3)). At 13 years old, I am guessing maybe AGP. Probably can get a good deal used, but don't know if they still make them. But if you're getting a new computer, then the newer GPU are exponentially more powerful.
Just from what I have gleamed here, seems like they like a GPU for folding since it has more cores. But since I only have one graphics card, F@H on the GPU pauses every time I am on the computer (or mainly wife). Need to read if their is a way around that.
Anyway, I maybe wrong, but just giving a try here. I also don't build my computers very often as mine usually suffice for many years. So I am not up on any newer technologies. Besides, I am usually reprimanded to the laptop while my wife surfs the net on a computer 100s of times more capable than what she needs.....oh well.
-=J