As you can see here, the stock 6300 is outperforming the 8150, and the 8350 is quite a way ahead of the 8150. PD tends to overclock better too, giving a much bigger potential performance increase.
http://i.imgur.com/0nIkCAb.jpg
Is it not just turbo'ing higher? I honestly don't know, likewise it's hard to tell from reviews as many sites(don't recognise the style there) wouldn't retest Bulldozer after the initial launch. Bulldozer alone on launch vs several windows updates and several months later were two fairly differently performing chips.
Honestly I've simply not paid too much attention to CPU reviews lately, I've read architecture info but the benchmarks haven't been interesting enough to watch. Intel get a little faster but stay quad core for years, AMD add a little but it's not much. Architecturally Piledriver is an interesting upgrade and Bulldozer is hugely interesting as the start of a new family of chips. Steamroller numbers will be interesting though, as is the architecture, as is HSA.
If AMD aren't bringing out 8 core steamrollers as soon as possible it's the one bad move they've made in the past couple years. Because people will be interested in upgrading when the new consoles bring us significantly higher performing games using more memory, cpu power, gpu power. Having an 8 core steamroller available that looked "close" to Intel in non gaming benches and on top of or ahead of Intel in gaming benches(new games) but also cost a lot less and would be significantly more power efficient(not than Intel but Piledriver, both because of tech and 28nm) would go down a treat. They should be making MS/Sony put AMD all over games, advertising boards in open world games, that kinda crap.
Checking a review I'm under the impression that the FX6300 both turbo's higher though not by much, but likely due to improvement in power usage and having less cores it likely turbo's more often and for longer which would explain higher benchmarks in many situations.
EDIT:- was looking at the 8120, so they have the same turbo but the other point stands, the FX6300 will turbo much longer and more often than a chip with double the amount of cores working. On the FX8350 it has a 400Mhz stock clock speed advantage. It's got an over 10% clock speed advantage and a slightly higher performance advantage which suggests the difference is pretty small overall.
For me, I moved from a Phenom 2 to a 2500k, only because my chip died and at that time the 2500k was a decent upgrade. Bulldozer was about where I expected, Piledriver a nice improvement, but I've been waiting for Steamroller, certainly didn't see the value in Ivy or HAswell upgrades. Just a huge shame they didn't push an 8 core Steamroller FX now. Of course Sony and MS might not be too happy about AMD essentially releasing an awesome gaming combo of new mobo, new cpu and new GPU right on the new gen console launch window.
If there was a 8 core Steamroller released now I'd upgrade that way, no doubt about it. A year from now Intel might actually get off their arse and put a decent hex core out for current quad prices. If Kaveri scares them at all they might adjust their pricing before AMD get an octo core version out.
