I just about trashed my x-y vice getting it this far before i started on the gpu/ram side. There is no way i could mill that side down so the ram/gpu makes good contact.
I did think about using artic apoxy or some thing for the ram building layers and then smoothing them down that should work.
it ways 530 grams as the moment.
I have a maze4 gpu on my 6600gt but it's so close to the ram i cant get any ram sinks on them.
I did think about making something to add to the maze4 gpu to touch the ram too.