Intel Atom E3815 vs Intel Atom x7405C

The Intel Atom E3815 is an earlier generation processor, designed for energy-efficient embedded systems with basic performance requirements.

The Intel Atom x7405C is a newer generation, targeting more demanding IoT and edge computing applications with higher processing power.

The Intel Atom E3815 (Bay Trail, 22 nm) has one core, one thread, 0 MB L2 cache, 1 MB L3 cache, and Intel HD Graphics (Bay Trail GT1) with 9 GB/s memory bandwidth. The Intel Atom x7405C (Amston Lake, 10 nm) offers four cores, four threads, 2 MB L2 cache, 6 MB L3 cache, 38 GB/s memory bandwidth, and PCIe 3.0.

The Intel Atom x7405C significantly outperforms the E3815 in single-core and multi-core performance. Its more modern architecture and higher core count enable much faster processing of complex workloads, while the E3815 serves for the simplest sequential tasks. Neither is designed for gaming. Both are suitable for basic multimedia.

The Intel Atom x7405C offers marginally better graphics performance for simple content due to higher processing power, but it is unsuitable for demanding games. Both Atom CPUs are energy-efficient. The E3815 is designed for extreme economy. The x7405C delivers more performance with improved efficiency thanks to the 10-nm process, keeping its consumption low.

The Intel Atom E3815 is more cost-effective and ideal for basic embedded tasks. The Intel Atom x7405C offers significantly better value for money for higher requirements and modern connectivity, even at a higher price. The Intel Atom E3815 is for extremely cost- and energy-conscious projects with low performance requirements.

The Intel Atom x7405C is recommended for applications with noticeably higher performance and modern multitasking.