The Tech Report posted a early preview on the Radeon HD 4870 X2
>> An early peek at the Radeon HD 4870 X2
AMD has quite a hit on its hands in the Radeon HD 4000 series. Coming up next is a product code-named R700, a high-end graphics card based on two Radeon HD 4870 GPUs paired together. Here's a preliminary look at how the card—to be called the Radeon HD 4870 X2—performs.
>> An early peek at the Radeon HD 4870 X2