2x HD 7770 and 3 versions of Luxmark 3.0.
Beta 1 turned out to be the best performance and accuracy-wise.
All on El Capitan DP3 in a Mac Pro 5,1.
Ok I've used 3.0 (was accurate enough) and 3.1 Beta 1 (less accurate yet). 280X and a cMP 5,1 as well, on El Cap DP3
So Luxmark 3.0 and 3.1 results are similar but not going to be a fair comparison, as noted by the dev here.
There's another interesting result. In good old Luxmark 2.1 & sala scene, the score with the same machine and 280X in Mavericks and Yosemite has always been 2400ish, see #109 here. Now on El Capitan I'm getting close to 2700..
Luxmark 2.1 Sala @ ElCap DP3.png 599.35KB 3 downloads