Cisco equipment memory chip specification Cisco Forum FAQ

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Cisco equipment memory chip specification

Router

From my experiences, the following router model share the similar memory chip specification. Therefore, most of the time memory chip from one model is interchangeable with another.

1. DRAM

* 800 series prior to 850/870 series; SOHO 90 series; 1700 series; 2600XM series; 2650 & 2651 - 100 Pin DIMM, SDRAM, 125MHz/133MHz, Unbuffered, Non-parity, 8ns, 3.3V, 16Meg x 32

* 800 series: 870 series - (provided by bigsy

) 168 pin DIMM low-profile CL3 non-ECC PC 133, i.e. Kingston KVR133X64C3L/128 works (full specification is clickable here), modules that are not low profile will not fit in the case correctly

* 800 ISR series: 880 series - (provided by jmbronk

, RuggeR

) 512MB PC2 4200 SODIMM, i.e. Samsung PC2-4200S-444-12-A and Samsung 512MB PC2-4200S-444-12-A3 work

* 2600 series (excluding XM models and the 2650, 2651, and 2691) - 100 Pin DIMM, EDO, 60ns

* All 1800 routers EXCEPT 1841 - 200 Pin SODIMM, SDRAM, 266MHz DDR, Non-ECC CL2.5 e.g. Kingston KVR266X64SC25/256

* 1841 - 144 Pin SODIMM, SDRAM, 133MHz, Non-ECC CL3 e.g. Kingston KVR133X64SC3/256

* 2811/21/51 - (provided by kamikatze

from this post) ECC DDR266/333/400 DDR. Kingston do a 512MB upgrade - KCS-D2800/512

* 3825/45 - (provided by kamikatze

) DDR333 or higher with ECC and at least CL2.5 (@333MHz). Kingston do 256MB & 512MB upgrades - KCS-D3825/256 & KCS-D3825/512

Note from cramer

Cisco 3845: ECC, DDR333 (PC2700) ONLY
System only supports 166Mhz DDRs /PC3200 DIMMs

DRAM: Non ECC memory not supported !!
DRAM: DIMM0, invalid Module Data Width of 64
(non-ECC DIMMs)

DRAM: DIMM 0 width not supported - 4
DRAM: DIMM1 width not supported - 4
(1G DIMMs)

2. Flash

* 800, 820
* 2500; 2600 (2610, 2611, 2612, 2613, 2620, 2621, 2650, 2651); 3600; 4000 (4000/4000M, 4500/4500M, 4700/4700M)
* All 2600XM models

For more info, check out the following Cisco link:

Cisco 1700 series
Cisco 2600 and 2600XM series

ASA 5500

ASA5505 DRAM: (provided by bigsy

) 184 pin PC3200 DIMM CL3 UB Non-ECC i.e. Kingston KVR400X64C3A/512 works (full specification is clickable here), MAX 512MB
ASA5505 Flash: CompactFlash (512MB SanDisk works)

Some discussions

»[H/W] Anyone out there with an 891?
»[Info] Recommended 1811 3rd party ram
»ASA 5500 Series 8.3(x) Memory Requirements
»[H/W] 881W ISR RAM Upgrades
»Cisco 5520 ASA Memory

got feedback?

Just to let u know that non ecc ram DOES work in the 2811, I put in mine

2013-05-04 15:40:18

And 2801 also uses sodimm pc133 ram, like the 1841 does, I tested various makes in 128 and 256Mb and they all worked in the 2801 In the 2811 I tested both ECC and nonECC that worked Samsung 256mb DDR PC2100 CL2.5 ECC (pc2100u-25331-a1)(cn0510) Samsung 512Mb DDR PC2700 CL2.5 (pc2700u-25331-z)(cn0452) Ofcourse u can't run non ECC and ECC in the same device

2013-05-04 15:51:28

Just wanted to confirm that Samsung 512MB PC2-4200S-444-12-A3 is indeed compatible with the Cisco 881. Figured I'd take the gamble and bought a stick off ebay and it worked! I'll take a $10 upgrade over a $150 upgrade anyday.

2012-12-31 19:57:35 (RuggeR )

by aryoba
last modified: 2013-04-12 12:36:44

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Cisco equipment memory chip specification