CPUarchitect
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- Jun 7, 2011
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Not likely. At least not yet. Some seemingly reliably sources give the Haswell graphics hardware a separate name: Denlow.Anyways I wanted to bump my question from the other page - is it possible that Haswell is fully homogenous?
I.e. software rendering for everything
That said, Hawell (and it's shrink Broadwell) might very well be the last heterogeneous Intel architecture. The AVX2 instruction set adds 'gather' and 'fused multiply-add' support, two powerful operations which used to set the GPU apart from the CPU. Since it will make Haswell's CPU cores capable of high performance throughput computing, it's not unlikely that Denlow will actually be assisted by these AVX2 enabled cores.
Even NVIDIA is exploring pure software rasterization! It's only a matter of time before the added flexibility is more valuable than theoretical performance.
The biggest hurdle to make CPUs capable of taking over all graphics tasks, is power consumption due to the out-of-order execution pipeline. But that can be solved by executing very wide vectors over multiple clock cycles (just like a GPU does), and clock gating the out-of-order logic while it's underutilized. Intel already revealed that AVX can be extended up to 1024-bit. The earliest something like that can be expected is 2015 though, and the software has to follow suit as well, so it's still quite speculative. In any case it needs no question whether graphics will one day become 100% programmable.
