The Diamond HD 4870 graphics card is the ATI Radeon HD graphics card to have if you are playing the latest game titles on the market. With an unprecedented 256-bit memory interface and 1GB of GDDR5 memory on the card you have the power to run at nearly any resolution your little heart desires. Site back while we compare the Radeon HD 4870 1GB to the GeForce GTX 260 Core 216 and then throw in a second one to see how it does in CrossFire.