The VIA Nano U2500 was a mobile processor with 1 core, launched in May 2008. It is part of the Nano U lineup, using the Isaiah (CNA) architecture with VIA nanoBGA2. Nano U2500 has 1 MB of L2 cache and operates at 1200 MHz. VIA is building the Nano U2500 on a 65 nm production process using 94 million transistors. The silicon die of the chip is not fabricated at VIA, but at the foundry of Fujitsu. The multiplier is locked on Nano U2500, which limits its overclocking capabilities.
With a TDP of 7 W, the Nano U2500 consumes extremely little energy. VIA's processor supports DDR2 and DDR3 memory with a single-channel interface. The highest officially supported memory speed is 1333 MT/s, but with overclocking (and the right memory modules) you can go even higher.
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 Nano U2500, which greatly improves virtual machine performance.