The HIS HD 3870 X2 1GB GDDR3 Video Card is based on two RV670 cores (2xRV670 = R680) which are built using the 55 nanometer manufacturing process and has 1.332 billion transistors. The core speed on this product is 825MHz and the 1GB of GDDR3 256 bit (x2) memory is 1.8GHz DDR. It comes with 640 stream processing units for vertex, pixel and geometry data, 32 texture units, 32 raster operators, the pixel fill rate is 26.4 GPixels/sec and the memory bandwidth is 115.2GB/s. Performance on this Video Card is out of this world!. Watch the video to find out more and check out the bloopers at the end.