- Cisco Employee,
Do you have any idea abt satori processor in CRS ?
The CRS-PRP is based on a quadcore Intel x86-64 architecture processor, which is much faster than the single-core PPC-architecture processors used in the RP and RP-B and allows for triple-channel DDR3 memory that provides higher capacity and much higher bandwidth. Naturally, this means it's a lot less vulnerable to performance impact from operations requiring CPU time like software-path forwarding or any number of advanced features.
It has a solid state drive, which is faster and more reliable than the spinning disks used previously. Because of this the PRP does not need removable flash cards to boot from, but there's a USB port to still allow for removable storage via flash drives.
Also, the management Ethernet ports now allow SFPs so that you can use fiber connections.
Those are the main differences, but you can look at the pages for the two models and compare to get more detail.