The Intel Core Duo T2600 was a mobile processor with 2 cores, launched in January 2006. It is part of the Core Duo lineup, using the Yonah architecture with Socket 479. Core Duo T2600 has 2 MB of L2 cache and operates at 2.166 GHz. Intel is building the Core Duo T2600 on a 65 nm production process using 151 million transistors. The multiplier is locked on Core Duo T2600, which limits its overclocking capabilities. With a TDP of 31 W, the Core Duo T2600 consumes only little energy. Intel's processor supports DDR1 memory. The SSE4 instruction set is not supported, which can cause problems with modern games, as they require that capability.