Is it usefull to do test with I7-2600 + 2x HD5870 GPUs, using AP rev.1316 app. with unroll 15;ffa_block 10240 ffa_block_fetch 5120? These give the lowest runtime and CPU time.{Cat 12.4; AMD-APP (SDK) 2.4; OpenCL 1.2}Or try this on GTX470 or 480?