The Intel Core Duo ULV L2400 was a mobile processor with 2 cores, launched in September 2006. It is part of the Core Duo lineup, using the Yonah architecture with Socket 479. Core Duo ULV L2400 has 2 MB of L2 cache and operates at 1066 MHz. Intel is making the Core Duo ULV L2400 on a 65 nm production node using 151 million transistors. The multiplier is locked on Core Duo ULV L2400, which limits its overclocking potential. With a TDP of 9 W, the Core Duo ULV L2400 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 L2400, which greatly improves virtual machine performance.