TweakTown published a photo of a naked RV770 GPU, it's about the size of a U.S. dime:
The site also published photos of a Phenom 9950 2.6GHz system running a Radeon HD 4850 graphics card along with 8GB of RAM memory. The anonymous source included a screenshot of 3DMark Vantage but for some reason the 3DMark score is 0. The GPU score is 4316 and CPU score 8593. A breakdown of the individual tests can be found at Tweaktown.