I repaired my 20inch G5 iMac last December (the GPU died a few years ago), and I'm using it daily to my great delight. I sincerely prefer it over the rest of (ultraslim) Macs I've access to now. It cannot be compared, this is simply a real Mac. And, now that I think, looking at its thickness, it's obvious that it has space for having a current desktop-class (not mobile-class, but desktop-class) GPU. A liquid-cooled AMD Fury X would fit (perhaps some slight redesign required, but it would fit). If Apple hadn't been stupid and gone clueless, the white iMac would be an incredibly powerful desktop nowadays. And the white plastic was so much more beautiful that the <yawn> boring slim metal cases of current pseudo-macs with mobile GPUs (or even worse, with no GPU at all, just CPU integrated el-cheapo). Ah, but we have now watches, phones, and an FBI soap opera... what more could phone-fans desire?