The CX9020 is a compact, DIN rail-mountable Ethernet control system with 1 GHz ARM Cortex™-A8 CPU. The connection for the Beckhoff I/O systems is directly integrated into the CPU module.
BECKHOFF CX2040-0155 The CX2040 has a 2.1 GHz Intel® Core™ i7 quad-core CPU. Due to its high power the CPU is equipped with a fan with ball bearings and speed monitoring. In addition to the CPU and chipset the CX2040 also contains the main memory with 4 GB RAM as standard. The controller boots from the CFast flash memory card.
PM901F 3BDH001001R0001 CPU module is the lite base unit of the Freelance AC 900F controller family. It supports up to 400 I/Os and 3 MB battery buffered SRAM.3 Ethernet interfaces, 400 MHz CPU clock