AMD implemented this to address the mishandling of threads by Windows Vista, which can cause single-threaded applications to run on a core that idles at half its clock rate. : 9 In another change from the original Phenom, Cool'n'Quiet applies to the processor as a whole, rather than on a per-core basis. The Phenom II triples the shared 元 cache size from 2MB (in the original Phenom line) to 6MB, : 3 leading to benchmark performance gains as high as 30%. The Thuban Phenom II X6 is the CPU in the Leo Platform which also includes the AMD 890 chipset and the Radeon HD 5800 series graphics. The Phenom II X4 operates as the processor component of AMD's Dragon Platform, which also includes the 790 series chipset and Radeon HD 4800 series graphics. The next-generation Phenom II X6 was released on April 27, 2010. Dual-processor systems require Socket F+ for the Quad FX platform.
Advanced Micro Devices released the Socket AM2+ version of Phenom II in December 2008, while Socket AM3 versions with DDR3 support, along with an initial batch of triple- and quad-core processors were released on February 9, 2009. Phenom II is a family of AMD's multi-core 45 nm processors using the AMD K10 microarchitecture, succeeding the original Phenom.
