i've soldered any type of electronic smd component on newer motherboards, guitar / audio amplifier, with troubleless procedures.

I've met, instead, any sort of problem with these vintage apple boards!

Yes, i used a 20 watt solder heating up gradually but i discovered that those apple SMD aluminum capacitors are not only soldered but firmly glued to the motherboard superface with two glue spots. While you desolder one side its counterpart is stressed and tend to lift. Even if it didn't happen with this video card i've had problem with SE30 recapping.