Iria

As we saw in our review of the ASUS EAH4870 Radeon HD 4870 graphics card, the Radeon HD 4870 was very much superior to high-end graphics cards like the NVIDIA GeForce 9800 GTX+. It was also about 2-2.5X faster than its predecessor, the Radeon HD 3870. Now, that is what you call a quantum leap ahead in performance!

Of course, this does not mean we are not going to try overclocking the card. Even though the Radeon HD 4870 will handily tackle practically every 3D game out there, there is still a dragon left to slay and that dragon is called Crysis. The Radeon HD 4870 delivered an average frame rate of 38 fps at 1600 x 1200 and 32 fps at 1920 x 1200. Very good but it would be nice to have better frame rates, wouldn't it? So, let's see how well the Radeon HD 4870 overclocks!
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Source: TechARP