Today we are going to preview a dual-GPU monster based on R700, the ATI RADEON HD 4870 X2 (R700) 2×1024MB. This article is exclusive enough, because the official announcement is scheduled only to August.
Link: http://www.digit-life.com

Last time we tested RADEON HD 4850 in games. Now we got hold of the higher-end HD 4870 with GDDR5 memory. Even though it has the same architecture and the same number of processing units, we decided to compare it to GeForce GTX 260, its competitor in terms of price.
Link: http://www.digit-life.com

Today we are taking a look at a ATI HD 4850 videocard from Visiontek. This card is a middle class card but I have seen stats that show this card should perform as well as many other high end cards on the market. We are going to put it against the Asus 9800GX2 Top and [...]

Interestingly, there seem to be few, if any drastic, architecture changes for HD 4000. It‘s all scale down, add more. PowerColor, a long-time board partner, shows just how well this strategy pays out for the HD 4850.Even side-by-side, this card looks just like a 3850. That‘s really superb, because not only was its predecessor small, [...]