AMD article on GPU performance

Building Power Efficient Designs is in our DNA
As the only company developing high-performance CPUs and GPUs today, AMD is uniquely positioned to leverage the learnings across our central engineering teams and leverage the best IP across our product portfolio. For example, following the success of the AMD Ryzen™ desktop and mobile processors, which offer incredible performance and efficiency, engineering teams collaborated to apply key learnings from our “Zen” CPU development into our Radeon graphics architecture to make RDNA™ 2 an extremely efficient GPU architecture.

A good little article about how energy efficient the AMD gpu’s are…doc