Unfortunately, in dolphin, there wouldn't be a speedup to get an 8350, actually. Ignore what I said before about the 8350; I've seen things said detailing that it performs horribly in dolphin. But, I know for a fact that the 6350 has better single-core performance and more performance per dollar than the 8350. As is normal with AMD since the Phenom IIs, you don't want to buy the one with the most cores, though you might be able to do the one with the most cores if you want to buy a 9590 and have the space to watercool it, but, last I checked, buying a 9590 and a preassembled watercooling kit is around as much as it costs to buy a 4770k, a good air cooler, and a well-featured motherboard for it.
So I'd say against buying the 8350, especially since the 8320 is the exact same processor, but for a lower price and with a slightly reduced clock rate, so, if you're adamant on buying into the 8-core processors, just get an 8320 and overclock it as hard as you can. Reaches the exact same limits as an 8350, too.
But really, if you're going to go up, go FX->9300 or FX-6350. Or, possibly, even wait for the new architecture that, last I checked, was being released Q3 (or 4?) this year. I've heard rumors of them bringing another jump in single-core performance from the last series (really, you guys need to stop being so hard on AMD for putting more cores in, they're fixing the mistake they made with bulldozer now, and have been since they started on piledriver), so that might be nice.
So I'd say against buying the 8350, especially since the 8320 is the exact same processor, but for a lower price and with a slightly reduced clock rate, so, if you're adamant on buying into the 8-core processors, just get an 8320 and overclock it as hard as you can. Reaches the exact same limits as an 8350, too.
But really, if you're going to go up, go FX->9300 or FX-6350. Or, possibly, even wait for the new architecture that, last I checked, was being released Q3 (or 4?) this year. I've heard rumors of them bringing another jump in single-core performance from the last series (really, you guys need to stop being so hard on AMD for putting more cores in, they're fixing the mistake they made with bulldozer now, and have been since they started on piledriver), so that might be nice.