I recently bought a Dell Studio 540 desktop and was looking to add dedicated graphics as there is only the intel integrated graphics. After looking about to find what motherboard is actually in the desktop this is what i found http://www.ascendtech.us/dell-studio-540-motherboard-m0... . i was wondering what gpu's i could buy to put in it? i don't want to buy a gpu and find its not compatible i was looking at maybe the Radeon 5 or 6 series gpu's but i don't mind getting an nvidia gpu. I also don't want to spend over €50.