The POWER6 chip is a 64 bit, dual-core processor with 790 million transistors running at up to 4.7 GHz and eight megabytes of on chip Level 2 cache. The processor is the first UNIX microprocessor able to calculate decimal floating point arithmetic in hardware. It is built using 65 nanometer process technology and includes additional techniques to conserve power and reduce heat. Processor clocks can be dynamically turned off when there is no useful work to be done and turned back on when there are instructions to be executed. Power saving is also realized when the memory is not fully utilized, as power is dynamically turned off and then turned back on when needed.