United States$5,000,000+
Inventory Delivered By
J
Jason Mullins
5
2GB DRAM handled advanced routing features well.
MEM-2900-2GB=
Original Stock
Ready to Ship
2GB DRAM (1 DIMM) for Cisco 2901, 2911, 2921 ISR, Spare
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Name:
MEM-2900-2GB=
- Description:
- 2GB 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:
- 11411535517
- Condition:
- Warranty:
- 3
- List Price:
$690.00
- Price:
$105.0084.8% off
Quantity:
1
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MEM-2900-2GB= Overview
MEM-2900-2GB= is a high-quality DDR4 computer memory module designed as a UDIMM for desktop systems while also offering compatibility with laptops and servers. It features a capacity of 2 GB with a speed of 2933 MHz, a CAS latency of CL16, and operates at a voltage of 1.2V, making it suitable for general use and light multitasking environments.
This non-ECC, unbuffered memory comes in a single channel kit configuration without an integrated heatsink or RGB lighting, thereby streamlining its design for standard builds. The module is engineered for compatibility across multiple platforms and is ideal for general computing needs in desktop, workstation, and server builds.
MEM-2900-2GB= price is $105.00, a 84.8% saving from the Cisco list price of $690.00. MEM-2900-2GB= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-2900-2GB= for additional pricing. Browse the full 2900 Router Memory & Flash series or explore all Cisco products.
MEM-2900-2GB= Specifications
- Weight
- 0.2 lbs
- Height
- 1.18 inches
- Depth
- 0.12 inches
- Operating Temperature
- N/A
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Compatible Platforms
- Desktop / Laptop / Server
- Form Factor
- UDIMM
- Reliability Rating
- Standard
- CAS Latency (CL)
- CL16
- ECC Support
- No
- Registered/Buffered
- Unbuffered
- RGB Lighting
- No
- AMD Platform Support
- AMD Ryzen 5000
- Kit Configuration
- Single Channel
- Intel Platform Support
- Intel 10th Gen
- Compatible Systems
- N/A
- Voltage
- 1.2V
- Width
- 5.25 inches
- XMP Support
- No
- Capacity
- 2 GB
- Use Case
- General Use
- Heatsink / Heatspreader
- No
- Speed
- 2933 MHz
- Product Name
- MEM-2900-2GB=
MEM-2900-2GB= Use Case
High-Performance VPN Throughput Boost in Remote Offices
In a distributed enterprise with Cisco 2901 ISRs, installing MEM-2900-2GB DRAM (1 DIMM) delivers: • 50% increase in IPSec VPN throughput • Support for 200+ concurrent encrypted tunnels • 30% reduction in latency Outcome: Secure, high-speed connectivity for remote workers, improved productivity, and consistent user experience.
Enhanced WAN Optimization for Distributed Retail Chains
Retail organizations using Cisco 2911 ISRs leverage MEM-2900-2GB DRAM to power WAN acceleration features, achieving: • 40% faster application response times • 35% reduction in WAN bandwidth costs • Real-time inventory and POS transaction processing Outcome: Lower operating expenses, seamless customer interactions, and synchronized data across all locations.
Scalable VoIP Deployment in SMB Contact Centers
SMB contact centers deploying Cisco 2921 ISRs upgrade with MEM-2900-2GB DRAM to support advanced voice services, enabling: • 300+ simultaneous VoIP calls • Enterprise-grade QoS with minimal jitter • High-availability failover for continuous operations Outcome: Superior call quality, expanded call capacity, and reliable customer support communications.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| MEM-2900-2GB= |  MEM-2900-1GB= |  MEM-2951-512MB= |  MEM-2900-512U2.5GB |  MEM-2900-512MB= | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR3 | DDR4 | DDR4 | DDR4 |
| Capacity | 2 GB | 1 GB | 512 GB | 512 GB | 512 MB |
| Compatible Platforms | Desktop / Laptop / Server | Desktop | Desktop / Laptop / Server | Desktop / Server | Desktop / Server |
| Compatible Systems | N/A | N/A | Workstation | Rack Server | Tower Server / Workstation |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Single Channel | Single Channel | Single Channel | Single Channel |
| Speed | 2933 MHz | 1600 MHz | 3200 MHz | 3200 MHz | 2933 MHz |
| Operating Temperature | N/A | N/A | N/A | N/A | N/A |
| Reliability Rating | Standard | Standard | Standard | Standard | Standard |
| CAS Latency (CL) | CL16 | CL11 | CL16 | CL16 | CL16 |
| Voltage | 1.2V | 1.5V | 1.2V | 1.35V | 1.2V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | No | No | No | No | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | No | Yes | No | Yes | Yes |
| Intel Platform Support | Intel 10th Gen | N/A | Intel 10th Gen | Intel Xeon Scalable | Intel 13th Gen |
| AMD Platform Support | AMD Ryzen 5000 | N/A | AMD Ryzen 3000 | AMD EPYC | AMD Ryzen 5000 |
| Use Case | General Use | General Use | Workstation | Server | Workstation |
| Product Name | MEM-2900-2GB= | MEM-2900-1GB= | MEM-2951-512MB= | MEM-2900-512U2.5GB | MEM-2900-512MB= |
| Height | 1.18 inches | 1.2 inches | 1.2 inches | 1.2 inches | 1.2 inches |
| Width | 5.25 inches | 5.3 inches | 5.3 inches | 5.3 inches | 5.3 inches |
| Depth | 0.12 inches | 0.2 inches | 0.5 inches | 0.3 inches | 0.5 inches |
| Weight | 0.2 lbs | 0.15 lbs | 0.15 lbs | 0.5 lbs | 0.2 lbs |
Reviews & Ratings
N
Noah Prescott
4
Cisco memory improved overall responsiveness.
L
Luke Harrington
5
Smooth upgrade process.
C
Caleb Winters
5
Stable under continuous workloads.
A
Andrew Wallace
5
Recommended for higher traffic sites.
Questions & Answers
What is the Cisco MEM-2900-2GB= DRAM module?
The MEM-2900-2GB= is a genuine Cisco 2 GB DDR3 DRAM (1 DIMM) spare designed to upgrade or replace memory in Cisco 2901, 2911, and 2921 ISR routers.
Which Cisco routers are compatible with the MEM-2900-2GB=?
This module is fully compatible with Cisco Integrated Services Routers ISR 2901, 2911, and 2921, ensuring seamless integration and optimal performance.
How does adding the 2 GB DRAM DIMM improve router performance?
Upgrading to 2 GB of DRAM increases packet buffering, enables more concurrent sessions, and supports advanced features like VPN and firewall services without performance degradation.
Is the MEM-2900-2GB= a genuine Cisco spare part?
Yes. The MEM-2900-2GB= is an OEM-approved Cisco spare part, manufactured, tested, and certified by Cisco to meet all original equipment standards.
How do I install the 2 GB DRAM DIMM in my Cisco router?
Power off the router, remove the cover, align the DIMM with the memory slot, press until it clicks, and replace the cover. Then power on and verify memory detection.
Do I need to reboot my router after installing the new DIMM?
Yes. A full reboot is required for the router to recognize and allocate the newly installed DRAM module.
Can I mix this 2 GB DIMM with my existing memory modules?
Yes, you can mix the 2 GB DIMM with other supported DIMMs, provided they match Cisco’s specified DDR3 speed and form factor requirements.
Is the MEM-2900-2GB= module hot-swappable?
No. This DRAM module must be installed while the router is powered off to avoid hardware damage.
How can I verify that the router recognizes the new DRAM?
After reboot, enter the CLI command ‘show memory summary’ or ‘show version’ to confirm the total installed DRAM capacity reflects the 2 GB upgrade.
What warranty does Cisco provide for this spare DIMM?
Cisco offers a limited lifetime warranty on this DRAM module when used in Cisco ISR platforms, covering manufacturing defects and hardware failures.
Are there any special software requirements for using this DRAM upgrade?
No special software is required. Any Cisco IOS release supported on the 2901, 2911, or 2921 router will automatically utilize the additional memory.
What are the physical specifications of the MEM-2900-2GB=?
This module is a standard 240-pin DDR3 SODIMM, measuring 69.6 mm × 30 mm, optimized for Cisco ISR chassis form factors.
What is the SKU and part number for ordering?
The Cisco SKU for this module is MEM-2900-2GB=, which corresponds directly to the Cisco spare part number.
Can I use this DRAM module to expand memory beyond 2 GB on my Cisco router?
No. This module adds exactly 2 GB. For capacities beyond 2 GB, combine with other Cisco-approved DIMMs up to the router’s maximum supported memory.
Why should I keep a spare MEM-2900-2GB= module on hand?
Having a spare ensures rapid replacement in case of memory failure or when planning performance upgrades, minimizing network downtime.
Where can I find installation and troubleshooting documentation?
Refer to Cisco’s official hardware installation guide for ISR 2900 Series on Cisco’s website or access the CLI command ‘show tech-support’ for diagnostics.