you all are also forgetting another major factor next gen game design will use amd open64 compilers in the design vs the biased Intel compilers and multi threaded rendering along with better multi threading period coming with next gen then you got HSA also.
facts are there is a move towards multi threaded games look at far cry 3 / crysis 3 / tomb raider / metro lastlight / also battle field 3 these are huge leaps forward in multi threading that utilize 4+ cores that lvls the playing field almost evenly between AMD FX 8350 and I5 do you not see this granted they have not fully implimented multi threaded rendering on these games yet nor the full ability of directX 11+ add to it next gen games will totaly be bypassing the DirectX API all together nearly to the driver lvl which literally meens no extra benefit can occur once it hits driver LVL that is peak efficiency nearly 100% out of the GPU's ability.
THIS IS FROM ONE OF MY PREVIOUS POSTS DIRECTLY FROM SONY
The system is also set up to run graphics and computational code synchronously, without suspending one to run the other. Norden says that Sony has worked to carefully balance the two processors to provide maximum graphics power of 1.843 teraFLOPS at an 800Mhz clock speed while still leaving enough room for computational tasks. The GPU will also be able to run arbitrary code, allowing developers to run hundreds or thousands of parallelized tasks.
Sony is building its CPU ( x86 same as PC AMD 8core ) on what it's calling an extended DirectX 11.1+ feature set ( ATI HD 7850 equivalent directX11 APU ), including extra debugging support that is not available on PC platforms ( presently ) . This system will also give developers more direct access to the shader pipeline than they had on the PS3 or through DirectX itself. "This is access you're not used to getting on the PC, and as a result you can do a lot more cool things and have a lot more access to the power of the system," Norden said. A low-level API will also let coders talk directly with the hardware in a way that's "much lower-level than DirectX and OpenGL," but still not quite at the driver level.
Xbox one is also nearly exact specs and such all AMD / ATI and 8core also.
also they are going to use the ATI APU / GPU to do computational and arbitary code,allowing developers to run hundreds or thousands of parallelized tasks.
basically the GPU will be far more important than the single threaded performance or IPC of the CPU and they will be doing also multi threaded rendering to share the work across multiple CPU cores so the need for a powerfull CPU per core will not be as important as a powerfull GPU with next gen game design add to it the other perks going for AMD / ATI and i want to point out ATI are the kings at doing the above said tasks look into it with bitcoin mining https://en.bitcoin.it/wiki/Mining_hardware_comparison
A GPU has a lot of cores (hundreds). Each core is basically able to compute one 32-bit arithmetic operation per clock cycle -- as a pipeline. Indeed, GPU's work well with extreme parallelism: when there are many identical work units to perform, actually many more than actual cores ("identical" meaning "same instructions", but not "same data").
GPU's achieve great performance by using heavy parallelism, with hundreds (if not thousands) of cores. This is made possible by pipelining (each individual operation takes many cycles to run, but successive operations can be launched like trucks on a highway) and sharing instruction decoding (since many cores will run the same instructions at the same time).
also remember next gen games are being made and designed with AMD open64 compilers http://developer.amd.com/tools-and-sdks/cpu-development/x86-open64-compiler-suite/
so there is a possibility that the artificial cores in the Intel hyperthreading case might not be supported because they refused to offer the okay for them to include the proper coding when AMD requested it AMD was trying to make a non biased compiler but Intel refused to even allow them the ability to add the major intel support stuff.
I also want to add multi threaded rendering has been proven to double the FPS / performance and this was done on a quad with hyperthreading back in 2010-2011 and could use upto 12 cores back then. http://forums.anandtech.com/showpost.php?p=31520674&postcount=28
In my eyes Intel refusing to give AMD the ok to add certain support for Intel CPU's in theyre compiler suite since it is what is being used on next gen game design will likely bite Intel in the butt Intel thought game developers would forever use theyre Intel compilers exclusively i quess even though developers have been complaining for years about it and had no other options but they do now and are now using the other option the AMD open64 compiler that Intel refused to allow AMD to add certain support for Intel CPU's.Edited by rickcooperjr - 8/6/13 at 6:17pm