United States$5,000,000+
Inventory Delivered By
H
Henry Wallace
4
1GB DRAM improved routing performance noticeably.
MEM-2900-1GB=
Original Stock
Ready to Ship
1 GB DRAM (1 DIMM) for Cisco 2901, 2911, 2921 ISR, Spare
FEATURED DEAL
Name:
MEM-2900-1GB=
- Description:
- 1 GB DRAM (1 DIMM) for Cisco 2901, 2911, 2921 ISR, Spare
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658278310
- Condition:
- Warranty:
- 3
- List Price:
$575.00
- Price:
$210.0063.5% off
Quantity:
1
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MEM-2900-1GB= Overview
MEM-2900-1GB= is a high-performance DDR3 DIMM memory module operating at 1600 MHz with a precise CAS latency of CL11 and a voltage requirement of 1.5V. It features a 1 GB module size delivered in a single channel kit configuration, ensuring reliable performance for desktop applications.
This module is non-ECC and unbuffered, making it broadly compatible with desktop systems while integrating an effective heatspreader solution for thermal management. Designed for general use in workstation or light gaming builds, MEM-2900-1GB= balances efficiency and stability for everyday computing needs.
MEM-2900-1GB= price is $210.00, a 63.5% saving from the Cisco list price of $575.00. MEM-2900-1GB= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-2900-1GB= for additional pricing. Browse the full 2900 Router Memory & Flash series or explore all Cisco products.
MEM-2900-1GB= Specifications
- Height
- 1.2 inches
- Width
- 5.3 inches
- Weight
- 0.15 lbs
- Depth
- 0.2 inches
- Operating Temperature
- N/A
- Product Type
- Computer Memory
- Form Factor
- UDIMM
- Reliability Rating
- Standard
- ECC Support
- No
- Registered/Buffered
- Unbuffered
- RGB Lighting
- No
- Heatsink / Heatspreader
- Yes
- Compatible Platforms
- Desktop
- Kit Configuration
- Single Channel
- Intel Platform Support
- N/A
- Compatible Systems
- N/A
- AMD Platform Support
- N/A
- XMP Support
- No
- Capacity
- 1 GB
- Speed
- 1600 MHz
- Use Case
- General Use
- Voltage
- 1.5V
- Memory Type
- DDR3
- CAS Latency (CL)
- CL11
- Product Name
- MEM-2900-1GB=
MEM-2900-1GB= Use Case
Branch Office Throughput Optimization with 1 GB DRAM Upgrade
In a mid-sized enterprise branch using Cisco 2901, 2911 or 2921 ISR routers to run VoIP, site-to-site VPN and cloud backup, installing the MEM-2900-1GB 1 GB DRAM DIMM elevates memory capacity for high-concurrency traffic. Benefit: eliminates memory bottlenecks, sustains consistent packet forwarding, and ensures uninterrupted voice and data services under peak loads.
High-Definition Video Conferencing at Remote Sites
A distributed manufacturing plant relies on Cisco 2911 ISR routers to host real-time HD video inspections across multiple production lines. By adding the MEM-2900-1GB DIMM, the router allocates extra buffer memory for video streams and encryption tasks. Benefit: reduces latency and jitter, delivers flawless video quality, and maintains secure, high-bandwidth connectivity for remote collaboration.
Scalable IPsec VPN Termination for Corporate Edge
A corporate data center aggregates 50+ branch site IPsec tunnels on Cisco 2921 ISR hardware running advanced security policies. Integrating the MEM-2900-1GB 1 GB DRAM spare module expands memory for session tables, encryption buffers, and deep-packet inspection. Benefit: supports higher concurrent VPN sessions, accelerates crypto performance, and fortifies perimeter security with zero performance trade-offs.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| MEM-2900-1GB= |  MEM-2900-512U2.5GB |  MEM-2951-512U2GB |  MEM-2951-512U1.5GB |  MEM-2951-512U2.5GB | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR3 | DDR4 | DDR4 | DDR4 | DDR4 |
| Capacity | 1 GB | 512 GB | 512 GB | 512 GB | 512 GB |
| Compatible Platforms | Desktop | Desktop / Server | Desktop | Desktop / Laptop / Server | Desktop |
| Compatible Systems | N/A | Rack Server | Workstation | Workstation | N/A |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Single Channel | Dual Channel | Single Channel | Single Channel |
| Speed | 1600 MHz | 3200 MHz | 3200 MHz | 3200 MHz | 3200 MHz |
| Operating Temperature | N/A | N/A | N/A | N/A | N/A |
| Reliability Rating | Standard | Standard | Standard | Standard | Standard |
| CAS Latency (CL) | CL11 | CL16 | CL16 | CL16 | CL16 |
| Voltage | 1.5V | 1.35V | 1.35V | 1.35V | 1.35V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | No | No | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | Yes |
| Intel Platform Support | N/A | Intel Xeon Scalable | Intel 12th Gen | Intel 13th Gen | Intel 12th Gen |
| AMD Platform Support | N/A | AMD EPYC | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 |
| Use Case | General Use | Server | Gaming | Gaming / Workstation / Server | Gaming |
| Product Name | MEM-2900-1GB= | MEM-2900-512U2.5GB | MEM-2951-512U2GB | MEM-2951-512U1.5GB Memory Module | MEM-2951-512U2.5GB |
| Height | 1.2 inches | 1.2 inches | 1.2 inches | 1.4 inches | 1.2 inches |
| Width | 5.3 inches | 5.3 inches | 5.0 inches | 5.3 inches | 5.3 inches |
| Depth | 0.2 inches | 0.3 inches | 0.5 inches | 0.5 inches | 0.6 inches |
| Weight | 0.15 lbs | 0.5 lbs | 0.3 lbs | 0.3 lbs | 0.2 lbs |
Reviews & Ratings
S
Scott Newman
4
Reliable memory for Cisco 2900 series.
J
Jason Coleman
4
Upgrade helped handle higher traffic loads.
P
Philip Turner
5
Easy installation with stable results.
A
Adam Fitzgerald
5
Solid Cisco certified memory.
Questions & Answers
What is the Cisco SKU MEM-2900-1GB=?
The Cisco SKU MEM-2900-1GB= is a genuine 1 GB DRAM module (1 DIMM) designed as a spare part for Cisco 2901, 2911, and 2921 Integrated Services Routers.
Which Cisco router models are compatible with MEM-2900-1GB=?
The MEM-2900-1GB= module is fully compatible with Cisco 2901, 2911, and 2921 ISR platforms, ensuring seamless memory upgrades and replacements.
How do I install the 1 GB DRAM DIMM in my Cisco 2901 ISR?
Power down the router, remove the chassis cover, align the MEM-2900-1GB= DIMM with the slot notch, press firmly until it clicks, then replace the cover and power on.
What performance benefits does the 1 GB DRAM spare module provide?
Installing the MEM-2900-1GB= module enhances packet buffering, increases VPN throughput, and supports larger routing tables for improved router performance.
Is the MEM-2900-1GB= module covered by Cisco warranty?
Yes, the MEM-2900-1GB= spare part carries Cisco’s limited lifetime warranty, covering defects in materials and workmanship under normal use.
Can I mix MEM-2900-1GB= with other memory modules?
Cisco recommends using identical MEM-2900-1GB= modules to ensure optimal performance and stability; mixing different capacities or speeds is not supported.
What is the memory speed of the MEM-2900-1GB= DIMM?
The MEM-2900-1GB= module operates at industry-standard DDR2 speeds compatible with Cisco 2901, 2911, and 2921 ISRs for reliable performance.
How do I verify that the MEM-2900-1GB= module is recognized?
After installation, enter the Cisco IOS command 'show inventory' or 'show memory statistics' to confirm the router detects the additional 1 GB DRAM.
What is the maximum memory supported by Cisco 2921 ISR?
The Cisco 2921 ISR supports up to 2 GB of DRAM; installing two MEM-2900-1GB= modules achieves the router’s maximum memory capacity.
Are there any special handling requirements for the MEM-2900-1GB= DIMM?
Handle the MEM-2900-1GB= module by its edges, avoid electrostatic discharge, and store it in its anti-static packaging until installation.
How quickly can I receive the MEM-2900-1GB= spare module?
Shipping times vary by region, but most orders for the MEM-2900-1GB= module ship within 1–2 business days with standard delivery options.
Can the MEM-2900-1GB= module improve VPN performance on ISR routers?
Yes, additional DRAM from the MEM-2900-1GB= module provides more buffering and processing headroom, resulting in enhanced VPN throughput and stability.
What packaging does the MEM-2900-1GB= come in?
The MEM-2900-1GB= module ships in Cisco-branded, anti-static packaging complete with part labels and barcodes for authenticity verification.
How do I authenticate the MEM-2900-1GB= module as genuine Cisco?
Check for Cisco holograms, part numbers, and serial numbers on the DIMM label and verify them against Cisco’s online authenticity tools.
Where can I purchase the Cisco MEM-2900-1GB= spare part?
You can buy the MEM-2900-1GB= module from authorized Cisco resellers, the Cisco online store, or your local Cisco distribution partner.