If you need raw horsepower, x86 is your choice. If you need really low power consumption, ARM wins. They really serve orthogonal markets, very little overlap.
A 1 GHz ARM is pushing it to get 1000 MIPS; an Atom processor (lower power x86 based core) at 1 GHz delivers about 2200 MIPS. The ARM does it at about 0.3W; the Atom pulls about 0.7W.
Thanks all for the input....raw power an as Ern states.....it needs to wait for me versus.
Grateful.