I'm looking to buy a laptop from the Dell Precision M6000 series, I'm deciding between the M6400, M6500, and M6600. Each laptop has a gpu with a 75 Watt TDP. They all have older Quadro GPU's, which I plan to upgrade. I know you can upgrade to better Quadro cards that where offered with the laptop, and some unsupported Quadro cards have been confirmed to work. However, even those cards are barely better than modern integrated graphics, so I wanted to upgrade to an older Geforce Card. I looked and chose the GTX 765m 2GB, a rather old card, but still much better than integrated graphics, It has a 60 Watt TDP, so it shouldn't have power issues, but will it be incompatible because of possible cooling issues or its age? As far as I know both cards are the same size. Also I know this isn't practical or cheap, its a personal project, not something that supposed to be my main laptop.