Atom x5-E3940

The Atom x5-E3940 is a 4-core / 4-thread processor based on the Apollo Lake (2014−2016) architecture, manufactured on a 14 nm process node. It reaches a maximum boost clock of 1.8 GHz from a base frequency of 1.6 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 0 kB of L3 cache, plus 2 MB (total) of L2 cache and 56K (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 1,816, placing it in the Entry Level performance tier as a Legacy generation product.

The Atom x5-E3940 fits into the FCBGA1296 socket and supports PCIe 3.0 with 6 total PCIe lanes for expansion cards and storage. It supports DDR3-1866 memory at speeds up to DDR3L-1866 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 8 GB across 2 channels (dual-channel doubles bandwidth). It supports ECC memory, providing error-correcting capabilities — essential for mission-critical workloads and servers. Integrated graphics: Intel HD Graphics 500 — allows display output without a dedicated GPU, useful for troubleshooting and light tasks.

The Atom x5-E3940 has a rated TDP (Thermal Design Power) of 10 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed.

Performance ranking position: #2666 out of all indexed processors.