United States$5,000,000+
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Richard Nolan
5
Exact replacement DIMM for ISR 2900 routers.
MEM-2900-512MB=
512MB DRAM (1 DIMM) for Cisco 2901, 2911, 2921 ISR, Spare
FEATURED DEAL
Name:
MEM-2900-512MB=
- Description:
- 512MB 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:
- 821455546864
- Condition:
- Warranty:
- 3
- List Price:
$460.00
- Price:
$168.0063.5% off
Quantity:
1
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MEM-2900-512MB= Overview
MEM-2900-512MB= is a high-performance DDR4 UDIMM memory module operating at 2933 MHz with a CAS latency of CL16 and a standard voltage of 1.2V. This module offers a capacity of 512 MB in a single channel kit configuration, is non-ECC and unbuffered, and is engineered primarily for desktop and server systems.
Designed with an integrated heatspreader for effective thermal management, the MEM-2900-512MB= module delivers consistent performance for workstation builds. Although it does not feature RGB lighting, its specifications make it well-suited for applications where reliability and efficiency are paramount.
MEM-2900-512MB= price is $168.00, a 63.5% saving from the Cisco list price of $460.00. MEM-2900-512MB= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-2900-512MB= for additional pricing. Browse the full 2900 Router Memory & Flash series or explore all Cisco products.
MEM-2900-512MB= Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 512 MB
- Compatible Platforms
- Desktop / Server
- Compatible Systems
- Tower Server / Workstation
- Form Factor
- UDIMM
- Kit Configuration
- Single Channel
- Speed
- 2933 MHz
- Operating Temperature
- N/A
- Reliability Rating
- Standard
- CAS Latency (CL)
- CL16
- Voltage
- 1.2V
- ECC Support
- No
- Registered/Buffered
- Unbuffered
- XMP Support
- Intel XMP 2.0
- RGB Lighting
- No
- Heatsink / Heatspreader
- Yes
- Intel Platform Support
- Intel 13th Gen
- AMD Platform Support
- AMD Ryzen 5000
- Use Case
- Workstation
- Product Name
- MEM-2900-512MB=
- Height
- 1.2 inches
- Width
- 5.3 inches
- Depth
- 0.5 inches
- Weight
- 0.2 lbs
MEM-2900-512MB= Use Case
Boosting Site-to-Site VPN Throughput with 512 MB DRAM on Cisco 2911 ISR
A mid-sized retailer operating 40 regional outlets installed MEM-2900-512MB DRAM into its Cisco 2911 routers to support 25 simultaneous IPsec VPN tunnels. The additional memory eliminated encryption buffer bottlenecks, delivering a 35 % increase in throughput and sustaining 99.9 % uptime for secure data synchronization.
Enabling Advanced Security Services on Cisco 2901 with 512 MB DRAM Upgrade
A financial services firm upgraded its Cisco 2901 ISR with MEM-2900-512MB DRAM to run Cisco IOS Firewall and intrusion prevention in parallel. The extra memory accommodated threat-signature databases and real-time analytics, reducing malware detection latency by 45 % and ensuring compliance with industry security mandates.
Improving VoIP and Video QoS on Cisco 2921 via 512 MB DRAM Expansion
An enterprise unified-communications deployment added MEM-2900-512MB DRAM to its Cisco 2921 routers to handle MPLS QoS policies for voice and video streams. The upgrade buffered routing tables and QoS processes, cutting jitter by 50 % and boosting call-quality MOS scores above 4.0 for 200 concurrent users.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 MEM-2900-512MB= |  MEM-2900-2GB= |  MEM-2951-512U4GB |  MEM-2900-512U2.5GB |  MEM-2900-1GB= | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR3 |
| Capacity | 512 MB | 2 GB | 4 GB | 512 GB | 1 GB |
| Compatible Platforms | Desktop / Server | Desktop / Laptop / Server | Desktop / Laptop / Server | Desktop / Server | Desktop |
| Compatible Systems | Tower Server / Workstation | N/A | Workstation | Rack Server | N/A |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Single Channel | Single Channel | Single Channel | Single Channel |
| Speed | 2933 MHz | 2933 MHz | 3200 MHz | 3200 MHz | 1600 MHz |
| Operating Temperature | N/A | N/A | N/A | N/A | N/A |
| Reliability Rating | Standard | Standard | Standard | Standard | Standard |
| CAS Latency (CL) | CL16 | CL16 | CL16 | CL16 | CL11 |
| Voltage | 1.2V | 1.2V | 1.35V | 1.35V | 1.5V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | Intel XMP 2.0 | No | Intel XMP 2.0 | No | No |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | No | Yes | Yes | Yes |
| Intel Platform Support | Intel 13th Gen | Intel 10th Gen | Intel 10th Gen | Intel Xeon Scalable | N/A |
| AMD Platform Support | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD EPYC | N/A |
| Use Case | Workstation | General Use | Gaming / Workstation | Server | General Use |
| Product Name | MEM-2900-512MB= | MEM-2900-2GB= | MEM-2951-512U4GB | MEM-2900-512U2.5GB | MEM-2900-1GB= |
| Height | 1.2 inches | 1.18 inches | 1.2 inches | 1.2 inches | 1.2 inches |
| Width | 5.3 inches | 5.25 inches | 5.3 inches | 5.3 inches | 5.3 inches |
| Depth | 0.5 inches | 0.12 inches | 0.5 inches | 0.3 inches | 0.2 inches |
| Weight | 0.2 lbs | 0.2 lbs | 0.3 lbs | 0.5 lbs | 0.15 lbs |
Reviews & Ratings
B
Brian Marshall
4
Cisco memory maintained system stability.
E
Edward Price
5
Worked without any issues.
M
Martin Shaw
3
Good spare for legacy hardware.
O
Oliver Reed
4
Reliable basic memory option.
Questions & Answers
What is the MEM-2900-512MB= spare memory module?
The MEM-2900-512MB= is a genuine Cisco 512MB DRAM 1 DIMM designed to expand memory on Cisco 2901, 2911, and 2921 Integrated Services Routers.
Which Cisco routers are compatible with the 512MB DRAM (1 DIMM) memory module?
The 512MB DRAM (1 DIMM) is fully compatible with Cisco 2901, Cisco 2911, and Cisco 2921 ISR platforms.
How do I install the 512MB DRAM 1 DIMM module in my Cisco 2901 router?
Power off the router, open the chassis, insert the DIMM into the DRAM slot until it clicks, close the chassis, and power on.
What performance improvements will I see after upgrading to this 512MB DRAM module?
Upgrading to 512MB DRAM enhances CPU throughput, supports additional services, and improves overall packet processing performance on ISR 2901, 2911, and 2921.