Shop By

Shopping Options

Pieces in Kit
  1. 2 (1)
  2. 4 (1)
Size
  1. 128MB (1)
  2. 32MB (1)
Brand
  1. RamCity (2)
Speed
  1. 150ns (1)
  2. 60ns (1)
Form Factor
  1. 72-pin SIMM (1)
  2. 80-pin Flash SIMM (1)
Voltage
  1. 5V (2)
 

RamCity guarantees 100% that all modules below are compatible with the Cisco Router 3640 Series

2 Item(s) Show per page
Sort by Set Ascending Direction
RamCity 128MB 72-pin SIMM Kit (4x32MB)
Part #. 4xCFB • 60ns • 5V • 16-chip 4Mx4 2K •  more info
Buy new: $258.99 $201.99

Ships in 7 Days Free Shipping Guaranteed Compatible

RamCity 32MB 80-pin Flash SIMM Kit (2x16MB)
Part #. 2xAOO • 150ns • 5V • 8-chip 2x8 •  more info
Buy new: $200.99 $156.99

Ships in 7 Days Free Shipping Guaranteed Compatible

2 Item(s) Show per page
Sort by Set Ascending Direction
 
We guarantee your memory upgrade will be 100% compatible, or return it within 1 Whole Year for a full refund.
Need some help installing your upgrade? See our guides and videos.
System Specifications
Comments:
  • The router may be converted to 64bit operation by installing the main memory in pairs. Under the 32-bit configuration the slots are 4 (4 Banks of 1).
Standard Memory:
Maximum Memory:
  • Main: 128MB
  • Flash: 32MB
Expansion:
  • Main: 4 Slots (2 Banks of 2 for 64-bit operation, or 4 Banks of 1 for 32-bit operation) Flash: 2 Slots
CPU/Chipset: