3dGameMan published a video review of the HIS HD 4870 512MB GDDR5 Video Card.

Quote from the review: "The Radeon HD 4800 series video cards are currently available in three flavors; the 4850, 4870 and 4870 X2. The single GPU HIS HD 4870 512MB GDDR5 Video Card is based on the RV770 core which is built on the 55 nanometer manufacturing process and has 956 million transistors. The core speed on this product is 750MHz and the 512MB of GDDR5 256 bit memory is 3.6GHz DDR. It comes with 800 stream processing units for vertex, pixel and geometry data, 40 texture units and 16 raster operators. The pixel fill rate is 27 GPixels/sec and the memory bandwidth is 115.2GB/s. If you've been waiting to purchase a high-end Video Card, it's arrived! This is the best performance vs. price video cards currently on the market, hands down!"
Watch the video review on 3dGameman.