Yes, that's what I meant... Ah ok. I could understand easily why it wouldn't be able to do 2 dot2 per test (serial dependent ones would be enough to prevent this), I just failed to see why it didn't even manage the same rate as dot4 under similar circumstances. I also find it quite funny with all the emphasis nvidia put on gpgpu that the GTX470 gets a very serious beating at DP issue rate (scalar or not...), even though it's artificially limited. The numbers there though also look a bit strange, more driver wonkiness for the HD5870? The DP MAD rate is only half that of DP MUL - I thought it should be 2/3, though that could also be due to dependencies I guess. In fact in one case (cs vec4) it's only 1/3 which doesn't make a whole lot of sense to me.