The Rm7900 offers clock speeds upto 833 MHz. This processor is used on the Ocelot-3 board. It has 16 KB Primary data cache, 16 KB Primary Instruction Cache and 256 KB Secondary cache. It packages a single E9000 core into an RM7000 pin compatible package. It's primary target market is to provide a simple upgrade path of RM7000-based designs.
The RM7900 is supported in Linux 2.4 and 2.6