Hi, I'm retiring my baby (g55vw) in about 3 months but it still runs as good as day 1 (save for some dents, a non functional battery and not working headphone jack) I read that the 660m (not 670m) got an update driver later on to support 4k till 60hz by Nvidia.
Sure enough, people here have run it at 4k at 30hz using the hdmi port! But it seems no one tested the minidisplay port (understandably as it was expensive back then to get a minidisplay to hdmi 2.0 cable).
I just purchased a nice 4k 60hz monitor, and was wondering if I get a mDP to hdmi 2.0 adapter if I can output at 60hz? It should depend on the display port model, so I'm wondering if it's 1.2 or higher (1.3 works!).