It's that time, AMD today unleashes their all new high-end product, the Radeon 4850 and 4870 X2. For those of you who lived under a rock and do not know what the X2 actually stands for, it's as simple as it sounds. X2 is times two .. these products are based on multiple GPUs per graphics card. In essence you take a large PCB (printed circuit board), position two 4850 or 4870 processors with an interconnect bridge-chip, grab a handful of memory chips, and then a pinch of resistors and mosfets. You put it in the pan, stir it and voilla ... your serving is ready.