So you claim that a gtx 560 (kepler) is faster as a brand new K2200 (maxwell) quadro and at the same time the gtx 750 (maxwell) is 5x slower ???!!
what i've found - AC excerpt -
"To avoid the potential accuracy problems, ArchiCAD is using Double Precision
to calculate coordinate transformations. In case you need to work with huge coordinates, a new, invisible origin is created in the centre of weight of the placed elements every time you open the file. It results a new reference coordinate system.
Elements across all storeys and views (Section, Elevation, 3D, etc.) placed to the model will be included in the same calculation".
From what ive seen
the GTX 560 - SPP of 1088.6 with a ratio of 1/12 making DPP 90
K2200 - SPP of 1280 with a ratio of 1/32 making DPP 40
I could not confirm the DPP number for the GTX 560 - but i did find the ratio.
correct me if im wrong, but i think if that number is correct, that's why the 560 does better.
Ive been doing so much research lately, as i need a new machine, (despite the fact that my mbp easily moves around in 3d model at around 50fps) i'm very annoyed that it's taken me days to source the information above, also that it hasn't been provided by GS. My view is that Quardo cards for Archicad
are a waste of money. The new Quadro M6000 with a freaking huge 24gb mem has worse double precision point numbers than a 2 year old Geoforce Titan BLACK or TITAN Z! (which is what i'll be buying if buy a desktop).
gtx 560 ratio source - https://devtalk.nvidia.com/default/topic/497325/double-precision-and-geforce-card-capable-of-double-...