I am thinking of buying a high end laptop for CUDA work and really need to know the level of DP support. This has always been un-necessarily vague, IMHO. What I understand for desktop GPUs that both Tesla 20xx and Quadro 4000, 5000, 6000 have about half as many DP units as SP, whereas the Q2000, 600 and all the GTX cards have considerably less DP capability. I reckon the GTX 480 has about 1/4 the DP capability as the Fermi, for example, but you also have to factor in clock speed. I saw one site suggesting that for the Q2000 the factor is down to 1/6 (is this right??)
This has been pieced together from various sources. What would be really nice is if Nvidia could include the DP:SP levels on all the web pages for ALL the new GPUs. Given that with Fermi there is massively more differentiation in DP support between the Pro and Games kit, those of us that have figured out that to do proper Sci Comp we cannot now get away with the games cards any more are at least owed a but more information.
What I need right now is corresponding information for the mobile devices, in particular the Quadro 5000M and GTX 480m, 460m. I guess the main question is whether it is worth shelling out for a 5000m unit from maybe HP, but I would only do that if it has the same 2:1 DP support as the desktop Quadro/Tesla.
So who can tell me for all the mobile GF10x cards, what the DP:SP ratio is, assuming the same clock speed?