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Cisco 3600 Series Routers Hardware Installation Guide
OL-2056-05
Chapter 1 Overview of Cisco 3600 Series Routers
Memory
Table 1-2 Cisco 3631 Router Processor and Memory Specifications
Description Specification
Processor 240-MHz PMC-Sierra RM7061A
RISC processor
SDRAM (main plus shared) 64 to 256 MB
NVRAM 55 KB
Flash memory
(compact Flash)
32 to 128 MB
Boot ROM 512 KB
Table 1-3 Cisco 3640 Router Processor and Memory Specifications
Description Specification
Processor 100-MHz IDT R4700 RISC
DRAM (main plus shared) 4 to 128 MB
NVRAM 128 KB
Flash memory (SIMM) 4 to 32 MB
Flash memory (PCMCIA) 2 to 40 MB
Boot ROM 512 KB
Table 1-4 Cisco 3660 Router Processor and Memory Specifications
Description Specification
Processor 225-MHz QED RM5271
SDRAM (main plus shared) 32 to 256 MB
NVRAM 128 KB
Flash memory (SIMM) 8 to 64 MB
Flash memory (PCMCIA) 2 to 40 MB
Boot ROM 512 KB