Came across this story and thought to share. Its proof of concept atm, not consumer orientated.
" The company claimed that its ray tracing architecture needs 100 times less power compared to desktop GPUs from AMD or Nvidia, quoting that real-time ray tracing is possible within just 5-10 watts."
http://www.tomshardware.com/news/imagination-powervr-gr6500-raytracing-gpu,29614.html#xtor=RSS-998
" The company claimed that its ray tracing architecture needs 100 times less power compared to desktop GPUs from AMD or Nvidia, quoting that real-time ray tracing is possible within just 5-10 watts."
http://www.tomshardware.com/news/imagination-powervr-gr6500-raytracing-gpu,29614.html#xtor=RSS-998
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