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Balanced upgrade improving routing efficiency.
MEM-2900-512U1.5GB
UPG 512MB TO 1.5GB DRAM 1GB+512MB FOR CISCO 2901-2921
FEATURED DEAL
Name:
MEM-2900-512U1.5GB
- Description:
- UPG 512MB TO 1.5GB DRAM 1GB+512MB FOR CISCO 2901-2921
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 841280174742
- Condition:
- Warranty:
- 3
- List Price:
$600.00
- Price:
$314.0047.7% off
Quantity:
1
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MEM-2900-512U1.5GB Overview
MEM-2900-512U1.5GB is a DDR3 UDIMM memory module operating at 1600 MHz with a CAS latency of CL11 and a standard voltage of 1.5V. Designed as a single channel kit, it is non-ECC and unbuffered, ensuring reliable compatibility with desktop systems while incorporating an integrated heatspreader for effective thermal management and no RGB lighting.
This module features a compact design optimized for efficient airflow and stable performance in various computing environments, including gaming, workstation, and general use builds. Its precise engineering and dimensions make it a dependable choice for users seeking balanced performance and durability in their desktop applications.
MEM-2900-512U1.5GB price is $314.00, a 47.7% saving from the Cisco list price of $600.00. MEM-2900-512U1.5GB is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-2900-512U1.5GB for additional pricing. Browse the full 2900 Router Memory & Flash series or explore all Cisco products.
MEM-2900-512U1.5GB Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR3
- Capacity
- 1.5GB
- Compatible Platforms
- Desktop
- Compatible Systems
- N/A
- Form Factor
- UDIMM
- Kit Configuration
- Single Channel
- Speed
- 1600 MHz
- Operating Temperature
- 0°C to 85°C
- Reliability Rating
- Standard
- CAS Latency (CL)
- CL11
- Voltage
- 1.5V
- ECC Support
- No
- Registered/Buffered
- Unbuffered
- XMP Support
- No
- RGB Lighting
- No
- Heatsink / Heatspreader
- Yes
- Intel Platform Support
- N/A
- AMD Platform Support
- N/A
- Use Case
- General Use
- Product Name
- MEM-2900-512U1.5GB
- Height
- 1.5 inches
- Width
- 5.3 inches
- Depth
- 0.5 inches
- Weight
- 0.45 lbs
MEM-2900-512U1.5GB Use Case
High-Speed IPsec VPN Acceleration for Remote Branches
By installing the MEM-2900-512U1.5GB-UPG on Cisco 2901-2921 routers at distributed sites, IT teams expand DRAM to 1.5 GB, sustaining high-performance IPsec and SSL VPN tunnels under heavy concurrency. Organizations benefit from up to 50% faster encrypted throughput, reduced latency, and consistent remote access stability—boosting productivity and securing critical business data.
Scalable Unified Communications for Mid-Sized Enterprises
Equipping Cisco 2901 routers with the MEM-2900-512U1.5GB-UPG empowers UC Manager Express deployments to support larger call volumes, advanced voicemail and conferencing features. The memory upgrade delivers a 60% capacity increase in active endpoints, superior call quality under peak load, and simplified administration—enabling seamless collaboration and a future-proof communications platform.
Enhanced Firewall and Intrusion Prevention Capacity
Upgrading to 1.5 GB DRAM via MEM-2900-512U1.5GB-UPG on Cisco ISR 2901-2921 routers unlocks full Zone-Based Firewall, IPS and Application Visibility & Control capabilities without memory constraints. Security teams can deploy larger ACL sets, deeper packet inspections, and real-time threat feeds, resulting in robust perimeter defense, compliance readiness, and up to 40% improved threat-handling throughput.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 MEM-2900-512U1.5GB |  MEM-2900-512U1GB |  MEM-2951-512U1.5GB |  MEM-2951-512U1GB |  MEM-2900-512MB= | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR3 | DDR4 | DDR4 | DDR4 | DDR4 |
| Capacity | 1.5GB | 512 GB | 512 GB | 512 GB | 512 MB |
| Compatible Platforms | Desktop | Desktop / Server | Desktop / Laptop / Server | Desktop / Laptop / Server | Desktop / Server |
| Compatible Systems | N/A | N/A | Workstation | Rack Server / Tower Server / Blade Server / Workstation / N/A | Tower Server / Workstation |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Single Channel | Single Channel | Single Channel | Single Channel |
| Speed | 1600 MHz | 2900 MHz | 3200 MHz | 3200 MHz | 2933 MHz |
| Operating Temperature | 0°C to 85°C | 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 | 1.2V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | No | No | Intel XMP 2.0 | No | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | Yes |
| Intel Platform Support | N/A | N/A | Intel 13th Gen | Intel 13th Gen | Intel 13th Gen |
| AMD Platform Support | N/A | N/A | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 |
| Use Case | General Use | Workstation | Gaming / Workstation / Server | Server | Workstation |
| Product Name | MEM-2900-512U1.5GB | MEM-2900-512U1GB | MEM-2951-512U1.5GB Memory Module | MEM-2951-512U1GB | MEM-2900-512MB= |
| Height | 1.5 inches | N/A | 1.4 inches | 1.18 inches | 1.2 inches |
| Width | 5.3 inches | N/A | 5.3 inches | 5.25 inches | 5.3 inches |
| Depth | 0.5 inches | N/A | 0.5 inches | 0.36 inches | 0.5 inches |
| Weight | 0.45 lbs | N/A | 0.3 lbs | 0.3 lbs | 0.2 lbs |
Reviews & Ratings
G
George Linton
4
Cisco memory met expectations.
H
Harvey Knox
5
Stable performance after upgrade.
I
Isaac Morton
3
Good mid range memory option.
J
Jonah Pierce
4
Worked perfectly in our ISR 2911.
Questions & Answers
What is the MEM-2900-512U1.5GB upgrade kit?
The MEM-2900-512U1.5GB upgrade kit enhances Cisco 2901 and 2921 routers by adding 1GB and 512MB DRAM modules to expand memory from 512MB to 1.5GB.
Which Cisco models are compatible with MEM-2900-512U1.5GB?
The MEM-2900-512U1.5GB kit is fully compatible with Cisco ISR 2901 and 2921 router series running Cisco IOS.
How does upgrading to 1.5GB DRAM improve router performance?
Increasing DRAM to 1.5GB enables higher throughput, supports advanced features, and prevents memory-related bottlenecks under heavy network loads.
Is the MEM-2900-512U1.5GB installation process straightforward?
Yes. Installation requires removing the router cover, seating the new 1GB and 512MB modules in the DRAM slots, and rebooting for automatic memory recognition.