The Radeon HD 4850 & 4870: AMD Wins at $199 and $299

The Witcher

The Witcher continues the trend of the 4870 surpassing the 9800GTX+ by a wide margin and edging out the more expensive GTX 260. It even blows well past its own brother the 4850. Here we see the additional memory bandwidth of the 4870 makes itself very prominent with a 39% boost in performance over the 4850, well beyond just the improvement in core speed. Although both cards offer framerates we'd consider playable at our stock resolution of 1920x1200, the 4870 is definitely the much more comfortable choice, with plenty of headroom for features such as additional anti-aliasing beyond just 2x.

Finally, it's interesting to note that the 4870 and the 3870 X2 are neck-and-neck until we finally crank up the resolution to 2560x1600, at which point the 3870 X2 pulls ahead. This is not what we would have expected. The HD4000 series seems to scale just a bit worse with resolutionthan either NVIDIA's cards or the HD3000 series.

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