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I'm seeing a solid per-EU performance improvement on a pure integer math kernel.
I'm comparing a 950 MHz 48 EU HD 6000 vs. a 1200 MHz 20 EU HD 4600. Both have similar DDR3 bandwidth.
Adjusted for clock speed, the kernel shows a 60% boost in throughput per EU. Without adjusting for clock speed, the HD 6000 still shows +26% over the HD 4600.
The improved integer throughput is a nice feature!
The current kernel might be a little light on compute and bandwidth limited so the performance improvement might eventually be even higher as the kernel takes shape. I'll know more later. :)
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Allan,
For integer kernels, BDW has twice the interger ALUs of HSW per EU, so yes, you should see dramatic performance improvements.

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