A few days ago i was watching Youtube and somewhere i have found a dual graphics review. Now the results was quite expected. 7850k+R7 250 in dual graphics have serious improvement, but 260x and 750Ti beats it. Now the fun part is, that 750Ti is better then 260X. The results, however showed i3+260X was weaker then 750Ti, 7850k+260X however beat the 750Ti with much... Not joking. Now i can't find the video again. However i want to ask you, if you have like an hour or so, try 7850k with 260X, then try i5 with 260X. I need the results, cause i will buy 7850K soon and i need to know should i consider 260X, cause i don't wana buy 250... If 260X have no improvement with Kaveri, i will just buy 750Ti... Or may be 265... Will think when the time and money comes...
You misunderstand what dual graphics is. Dual graphics, or hybrid crossfire, is where the iGPU in the APU is crossfired with a specific discrete GPU. Now that being said the 7850K can do dual graphics with the R7 250 or R7 240 ONLY, you cannot run dual graphics with a R7 260X.
So if you are planning getting a 7850K, don't because there no point getting an APU if you aren't ever going to use the iGPU, get a FX 8320 and a discrete GPU instead as the 8320 is cheaper and runs circles around the 7850K in CPU performance.
Now don't be so quick to dismiss this. The 7850k is an HSA-compliant part, not the same as last year's APUs.
It's fully possible (and dare I say likely) that AMD's driver uses HSA to either assist with rendering or handle some of the more parallelizable work the driver normally does.
I for one would be very interested in whether the driver is HSA-enabled.
But nothing supports HSA and it will probably be years before it even makes it off the ground. Yes I know Fedora is going to support it but the keyword is "support", if a program doesn't support it then its completely pointless. And for gaming it will take even longer, most studios can't even code for PC period let alone implement something like HSA. So as far as right now goes, the best bang for buck is not the 7850K
The point of this test is to see if AMD's GPU driver uses HSA. If it does, then it could offer a pretty beefy performance improvement over non-HSA processors.
It is not about what's good for the money, in this case. It's more of an academic question that could very well change which CPU is best to pair with an AMD GPU.