Anyway, herewith a single CPU instance at RunAbove -
http://labs.runabove.com/power8/ - Not totally sure on the billing in comparison to other cloud server providers, but those are certainly some powerful core(s).
Just went to try it! 1 thread gives 1.2KH, 2 threads give 1.5KH total, 4 threads give 1.8KH, 8 threads give about 1.5KH.
Power8 works on a 8 thread per core. So I guess this kinda explains the results!