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MEM-2900-1GB
1 GB DRAM (1 DIMM) for Cisco 2901, 2911, 2921 ISR, Spare
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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.
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.
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.
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.
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| 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 |
| 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 |
| 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 |
| 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 |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
1GB DRAM improved routing performance noticeably.
Reliable memory for Cisco 2900 series.
Upgrade helped handle higher traffic loads.
Easy installation with stable results.
Solid Cisco certified memory.
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.
The MEM-2900-1GB module is fully compatible with Cisco 2901, 2911, and 2921 ISR platforms, ensuring seamless memory upgrades and replacements.
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.
Installing the MEM-2900-1GB module enhances packet buffering, increases VPN throughput, and supports larger routing tables for improved router performance.
Yes, the MEM-2900-1GB spare part carries Cisco’s limited lifetime warranty, covering defects in materials and workmanship under normal use.
Cisco recommends using identical MEM-2900-1GB modules to ensure optimal performance and stability; mixing different capacities or speeds is not supported.
The MEM-2900-1GB module operates at industry-standard DDR2 speeds compatible with Cisco 2901, 2911, and 2921 ISRs for reliable performance.
After installation, enter the Cisco IOS command 'show inventory' or 'show memory statistics' to confirm the router detects the additional 1 GB DRAM.
The Cisco 2921 ISR supports up to 2 GB of DRAM; installing two MEM-2900-1GB modules achieves the router’s maximum memory capacity.
Handle the MEM-2900-1GB module by its edges, avoid electrostatic discharge, and store it in its anti-static packaging until installation.
Shipping times vary by region, but most orders for the MEM-2900-1GB module ship within 1–2 business days with standard delivery options.
Yes, additional DRAM from the MEM-2900-1GB module provides more buffering and processing headroom, resulting in enhanced VPN throughput and stability.
The MEM-2900-1GB module ships in Cisco-branded, anti-static packaging complete with part labels and barcodes for authenticity verification.
Check for Cisco holograms, part numbers, and serial numbers on the DIMM label and verify them against Cisco’s online authenticity tools.
You can buy the MEM-2900-1GB module from authorized Cisco resellers, the Cisco online store, or your local Cisco distribution partner.
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