The Intel Core Duo ULV L2500 was a mobile processor with 2 cores, launched in June 2006. It is part of the Core Duo lineup, using the Yonah architecture with Socket 479. Core Duo ULV L2500 has 2 MB of L2 cache and operates at 1200 MHz. Intel is building the Core Duo ULV L2500 on a 65 nm production process using 151 million transistors. The multiplier is locked on Core Duo ULV L2500, which limits its overclocking capabilities. With a TDP of 9 W, the Core Duo ULV L2500 consumes extremely 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. Hardware virtualization is available on the Core Duo ULV L2500, which greatly improves virtual machine performance.