I've been encountering issues with my current graphics card (too little VRAM), and have been considering switching to a Radeon HD6450 card (Amazon: http://www.amazon.com/MSI-Profile-PCI-Express-R6450-MD1GD3-LP/dp/B004X6ABTM/); however, would it fit into my current case (standard Dell Inspiron 570 case)? Currently using an Radeon HD 3200 card (RS780 series). Thanks in advance.