Motherboards published a review of the Visiontek ATI Radeon HD4870 512MB GDDR5 video card.

Quote from the review: "ATI has a definite winner here as the card comes close to the GTX280 in one situation and beats the previous generation HD3870 throughout the tests. Apparently the HD4870 comes close to the performance of a GTX260 in almost every case, but for $100 less making it a real winner. Competition has been lacking in the graphics market since the launch of the 8800GTX two years ago, but ATI is back with a vengeance offering lower power draw, great performance and features for a lower price point than the competition at the same performance segment.
The big gun of the ATI lineup, the HD4870X2 is due in August and should outperform any GTX280 across the board for lower prices."
Read the full review on Motherboards.