As I have heard the XPS 8300 have some issues with the GTX 600 series as a life fan of NVIDIA GPUs I wanted to upgrade to one of those but as i cant with the current motherboard i decided to make some changes to my rig currently I dont want to change the XPS case so I was wondering if this would fit in it.

http://www.asus.com/Motherboards/Intel_Socket_1155/Maximus_V_GENE/#specifications

http://www.corsair.com/us/power-supply-units/tx-series-power-supply-units/enthusiast-series-tx750-v2-80-plus-bronze-certified-750-watt-high-performance-power-supply.html

If Dell cases are standar size they should fit but im not sure about that, any help would be appreciated ty.