Apple Forces Recyclers to Shred All iPhones and MacBooks - https://www.vice.com/en_us/article/yp73jw/apple-recycling-ip...
Anyway, the best waste is the one that does not exist, recycling should be last resort since it's often far from perfect and costly too. So we should reduce the amount of things we need to recycle in the first place. As for computer parts, I cannot see how it can be efficient.
Reusing working stuff is good though, obviously.