Will a GTX 770 fit Dell Inspiron MT 660

[daBizMan]

I'm getting an inspiron 660MT but I want to change the graphics card to an GTX 770. By the case dimensions, the card should theoretically fit inside, but if don't know if it's compatible with the motherboard or not or the length of the case is 17.3 in but maybe the hard disk or anything is taking up most of the space, leaving nothing to the 770.

 

[dddingggiii]

Does your motherboard have a PCI express slot?

 

[daBizMan]

3 PCI Express x1 slots that's what in the user manual.

Edit: I know that I need to upgrade the PSU too.