The AMD Sempron X2 2100 was a desktop processor with 2 cores, launched in March 2008. It is part of the Sempron X2 lineup, using the Brisbane architecture with Socket AM2. To further increase overall system performance, up to two Sempron X2 2100 CPUs can link up in a multi-processor (SMP) configuration. Sempron X2 2100 has 256 KB of L2 cache and operates at 1800 MHz. AMD is building the Sempron X2 2100 on a 65 nm production process using 221 million transistors. The multiplier is locked on Sempron X2 2100, which limits its overclocking capabilities. With a TDP of 65 W, the Sempron X2 2100 consumes typical power levels for a modern PC. For communication with other components in the machine, Sempron X2 2100 uses a PCI-Express Gen 2 connection. Although the processor doesn't come with integrated graphics, certain motherboards with compatible chipsets can provide this capability. The SSE4 instruction set is not supported, which can cause problems with modern games, as they require that capability.