Hi so I'm planning to get a graphics card soon but I was wanting to make sure it will work, I have a i7 950 and 6gb of ram with a Gigabyte X58A-UD3R motherboard. I'm planning on getting either Radeon R7 260X-2GB or GTX680 Super Overrclocked Edition 2GB or ASUS GeForce GTX 770 2GB... Would love to see a reply soon