"It looks like the rumors were true; AMD is going to be selling an FX-9590 processor this month that will hit frequencies as high as 5 GHz. Though originally thought to be an 8-module/16-core part, it turns out that the new CPU will have the same 4-module/8-core design that is found on the current lineup of FX-series processors including the FX-8350. But, with an increase of the maximum Turbo Core speed from 4.2 GHz to 5.0 GHz, the new parts will draw quite a bit more power. You can expect the the FX-9590 to need 220 watts or so to run at those speeds and a pretty hefty cooling solution as well. Performance should closely match the recently released Intel Core i7-4770K Haswell processor so AMD users that can handle the 2.5x increase in power consumption can finally claim performance parity."
http://hardware.slashdot.org/story/13/06/11/2014241/amd-making-a-5-ghz-8-core-processor-at-220-watts