https://www.computerbase.de/2017-08...ts-escalation-rx-vega-56-vs-vega-64-vs-fury-x So basically the performance per clock cycle, which in theory should be purely from improved design, only gives a tiny amount of performance boost. The most performance boost comes from the bumped clock rate. http://www.anandtech.com/show/11717/the-amd-radeon-rx-vega-64-and-56-review/2 This feels like Pentium4 and Faildozer to me. RTG tries to maximize clock hoping it will give them some performance boost. What they ended up getting is a power hungry monster. I am sure @W1zzard would do some in depth analysis of Vega design in the future.