You definitely need that kind CPU to be able to run any game
But if you want to lower the power consumption then sell your curent GTX 460 (160W) , replace it with latest Maxwell GPU : EVGA GTX 750 (55W)
GTX 750 can handle up to 3xIR(1920x1584) on GPU intensive games , 4xIR (2560x2112) on most games .
i7-4790K @ 4.4GHz Turbo Clock : 88W vs your current i7 860 @ 3.46 GHz Turbo Clock : 95W vs Unlocked Pentium 20th Anniversary version G3258 @ 3.2GHz no Turbo : 53W
Although Unlocked Pentium Haswell can be overclocked , way more powerful than your i7 in Dolphin and its power consumption is low , I don't think that you should drop your quad i7 for a mere dual core Haswell . i7 4790k power consumption is lower than yours , overclock it or not is your choice to make . As you can see , its Turbo Clock is even higher than a "normal OCed "i5 4670k
But if you want to lower the power consumption then sell your curent GTX 460 (160W) , replace it with latest Maxwell GPU : EVGA GTX 750 (55W)
GTX 750 can handle up to 3xIR(1920x1584) on GPU intensive games , 4xIR (2560x2112) on most games .
i7-4790K @ 4.4GHz Turbo Clock : 88W vs your current i7 860 @ 3.46 GHz Turbo Clock : 95W vs Unlocked Pentium 20th Anniversary version G3258 @ 3.2GHz no Turbo : 53W
Although Unlocked Pentium Haswell can be overclocked , way more powerful than your i7 in Dolphin and its power consumption is low , I don't think that you should drop your quad i7 for a mere dual core Haswell . i7 4790k power consumption is lower than yours , overclock it or not is your choice to make . As you can see , its Turbo Clock is even higher than a "normal OCed "i5 4670k
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