I'm looking to upgrade the gpu in my XPS 8700 from a GT 720 to either a GTX 750 Ti or a GTX 960. The immediate issue I see when looking at GPUs is the space constraints in the XPS. I'm wondering if I'd be able to fit a full size card like this: http://www.newegg.com/Product/Product.aspx?Item=N82E16814487028, or if even a smaller card like this: http://www.newegg.com/Product/Product.aspx?Item=N82E16814487133 would fit.