New iMac 21´s GT640 to bring Optimus Solution?

[Pxndxm3nth3]

I´ve just read that the new iMac of 21" has a Nvidia GT640M, reading GPU´s specs at NVIDIA, i´ve found that the GPU has Optimus. I know that many cards doesn´t work because of that (Mine 630M).
So, my question is.. Those cards are going to work now? I hope yes

 

[schinkengott]

i dont think so,because the chips are same, but these 640m are just build for it and not the 640m that are build and selled to windows users