Hello Jake,
Thank you for your simple and radical answer !
I forgot to mention it was for ML 10.8.x. But if i understand well, you mean (by Yes) that the NVS 5200m is recognized
in OS X with 1Gb of vram, and the HD 4000 can be used also with a customized vram amount.
The only thing i want to confirm is, to enable sleep the 5200m needs to be disabled and HD 4000 enabled, is it right ?
Thanks