Anyone has the nMP with D700? I got one a week ago, and at least in two 3D applications, the viewport is slow, choppy. The results are very mixed, in some cases it ok, sometimes not, in some cases it seems Mavericks issue, in others it seems that the D700 is just not fast in terms of viewport performance. In other apps, it seems everything is ok, even better than before. Confusing. So..: 1) In Modo (a 3D modeller, similar to Maya), I did experience viewport slow down, choppy performance, especially in top or side view. I emailed the company and I was told it is Mavericks issue and affecting everyone, so I decided to be patient with my conclusion and wait for update. And some suggestions helped, like switching off grid in viewport. HOWEVER, we have tested the same scene on an iMac 2013, GTX 780M running also on Mavericks, and it outperformed easily the nMP D700 in terms of frame per second in the same situation. Now, there you cannot say it is Mavericks issue, as the guy was running 10.9.1, too - and we both used Modo team's suggestions to switch off grid etc. The difference was more obvious in extra large scene, not so much at mid level. At 36 million polygon, the D700 produced a very low 8.25 frame per second, while iMac was still usable at around 20 frame per second. Ok, 36 million poly is a lot, but easily you can grow your scenes that big - and I genuinely thought it will outperform the iMac for viewport performance. I was very wrong. If I knew this, I would probably have gone for 2 iMacs for the same price. However, I have to admit, that once following Modo team's suggestion (grid off etc.), performance was ok at medium complexity, but still why iMac outperformed it? 2) I also just tried a very simple texture previz app called "Substance Player" from Allegorithmic It displays a cube and the textures with specularity, diffuse, bump map etc. Plain simple. Shockingly, even the rotation of this simple cube is really choppy, while my 2008 Mac with a slow Radeon HD 4870 gives extra smooth performance. So it is not the complexity of the scene at all. It seems serious driver issues, but I was in the belief that I am paying so much extra because drivers are so optimised? Am I wrong?? Anyway, QUESTIONs: 1) Anyone else has experienced all these in 3D apps? 2 )Any solution? Or we need to wait for drivers? 3) How come iMac GTX 780M outperforms a system that is 3000pounds more expensive? Do you guys think that with driver update, I will gain "frame per second" boost, or that cannot be boosted? Cheers!