I would rather describe the Nano as the grandchild of the WinChip, not the 6x86

The 6x86 was a great design that gave us much to be thankful for, in many ways - even though the FPU sucked (Funny enough because Cyrix used to make some magnificent FPUs).

In most cases the heat issues could be minimized by using a better cooler, as long as it was manufactured by IBM - even better sold under the IBM brand