Thanks for all the help, Havok
you're doing good things on X-S.
I've spent many hours reading about different fixes and how to execute them.
This is what I've read on the most sites about the X-clamp fix:
The 0102(and others) RROD is caused by bad/broken soldering(like you told me). The bad connections are mostly triggered by the loose cooling block(or whatever it's called in English), and it gets loose because of the low-quality X-clamps used. Then you can make the GPU/CPU pins connect better by placing stronger X-clamps, or by reflowing the solder. I've also read the X-clamp fix is pernament in most cases.
I think the X-clamp fix is the most reasonable fix for me, because my lack of skills. Well, if it is not pernament in most cases, I can get it done by a pro, but that's very expensive. What do you think?