AMD released its first of the next generation GPU with the Radeon HD 7970 on December 22nd, 2011, codenamed "Tahiti." This released ruled the market in both performance and price until NVIDIA released the GeForce GTX 680 which had better performance and a lower price. AMD continued its release of the Radeon HD 7950 on January 30th, 2012 and later on with the Radeon HD 7870 and 7850 video cards on March 4th, 2012, codenamed "Pitcairn." Now that we are later in the release cycle for the Tahiti generation, AMD has soft launched a 7870 Limited Edition GPU that is based upon the Tahiti architecture. The GPU sports 1536 stream processors and a 256 bit memory bus, which places it midway between the 7870 and 7950 GPUs, which have 1280 and 1792 stream processors respectively. The 7870 LE is clocked at 925MHz and paired with DDR5 running at 1500MHz (effective 6.0GHz) and has implemented AMD’s Power Boost, giving it a boost clock of 975MHz.
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