United States$5,000,000+
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P
Paul Hendricks
5
2GB upgrade noticeably improved ISR 2951 stability.
MEM-2951-512U2GB
512MB to 2GB DRAM Upgrade (1 2GB DIMM) for Cisco 2951 ISR
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Name:
MEM-2951-512U2GB
- Description:
- 512MB to 2GB DRAM Upgrade (1 2GB DIMM) for Cisco 2951 ISR
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 12306905132
- Condition:
- Warranty:
- 3
- List Price:
$900.00
- Price:
$337.0062.6% off
Quantity:
1
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MEM-2951-512U2GB Overview
MEM-2951-512U2GB is a high-performance DDR4 UDIMM memory module, engineered for desktop environments with a capacity of 512 GB configured in a dual channel kit. It operates at 3200 MHz with a CAS latency of CL16 and requires a voltage of 1.35V, making it a robust solution for gaming and professional workstation builds while being non-ECC and unbuffered.
This module features an integrated heatspreader to maintain optimal thermal performance and is designed with Intel XMP 2.0 support, ensuring reliable compatibility with Intel 12th Gen and AMD Ryzen 5000 platforms. Its official design specifications guarantee it meets the demands of high-performance computing, delivering exceptional speed and stability for gaming, workstation, and general desktop use.
MEM-2951-512U2GB price is $337.00, a 62.6% saving from the Cisco list price of $900.00. MEM-2951-512U2GB is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-2951-512U2GB for additional pricing. Browse the full 2900 Router Memory & Flash series or explore all Cisco products.
MEM-2951-512U2GB Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 512 GB
- Compatible Platforms
- Desktop
- Compatible Systems
- Workstation
- Form Factor
- UDIMM
- Kit Configuration
- Dual Channel
- Speed
- 3200 MHz
- Operating Temperature
- N/A
- Reliability Rating
- Standard
- CAS Latency (CL)
- CL16
- Voltage
- 1.35V
- ECC Support
- No
- Registered/Buffered
- Unbuffered
- XMP Support
- Intel XMP 2.0
- RGB Lighting
- No
- Heatsink / Heatspreader
- Yes
- Intel Platform Support
- Intel 12th Gen
- AMD Platform Support
- AMD Ryzen 5000
- Use Case
- Gaming
- Product Name
- MEM-2951-512U2GB
- Height
- 1.2 inches
- Width
- 5.0 inches
- Depth
- 0.5 inches
- Weight
- 0.3 lbs
MEM-2951-512U2GB Use Case
Enhanced Branch Office VPN Throughput and Stability
In a distributed enterprise with 50+ remote sites, the MEM-2951-512U2GB-512MB→2GB DRAM upgrade on a Cisco 2951 ISR enables support for up to 200 simultaneous IPsec VPN tunnels while maintaining sub-5 ms latency. By offloading key encryption processes into expanded DRAM, branch-to-headquarter connections remain stable under peak traffic, reducing packet loss by 40% and ensuring continuous access to critical ERP and CRM applications.
Optimized Unified Communications and Voice Traffic Handling
A contact center deploying Cisco Unified Communications Manager Express on a 2951 ISR leverages the MEM-2951 2 GB DRAM upgrade to host 120 concurrent voice and video calls with advanced QoS policies. The additional memory permits real-time jitter buffering and call detail record processing, delivering crystal-clear voice, 30% fewer dropped calls, and 25% faster call setup times for improved customer satisfaction.
High-Performance SD-WAN Overlay and Zero-Touch Provisioning
Global retail chains deploying Cisco SD-WAN on ISR 2951 leverage the MEM-2951 DRAM upgrade to accelerate control-plane functions and route policy lookups. With 2 GB of DRAM, each branch router supports dynamic path selection over MPLS, broadband and LTE links, enabling zero-touch provisioning and sub-second failover. The result: 50% faster deployment cycles and 99.9% network uptime during peak shopping events.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 MEM-2951-512U2GB |  MEM-2900-2GB= |  MEM-2900-512U1GB |  MEM-2900-512U2.5GB |  MEM-2951-512U2.5GB | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR4 |
| Capacity | 512 GB | 2 GB | 512 GB | 512 GB | 512 GB |
| Compatible Platforms | Desktop | Desktop / Laptop / Server | Desktop / Server | Desktop / Server | Desktop |
| Compatible Systems | Workstation | N/A | N/A | Rack Server | N/A |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Dual Channel | Single Channel | Single Channel | Single Channel | Single Channel |
| Speed | 3200 MHz | 2933 MHz | 2900 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) | CL16 | CL16 | CL16 | CL16 | CL16 |
| Voltage | 1.35V | 1.2V | 1.35V | 1.35V | 1.35V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | Intel XMP 2.0 | No | No | No | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | No | Yes | Yes | Yes |
| Intel Platform Support | Intel 12th Gen | Intel 10th Gen | N/A | Intel Xeon Scalable | Intel 12th Gen |
| AMD Platform Support | AMD Ryzen 5000 | AMD Ryzen 5000 | N/A | AMD EPYC | AMD Ryzen 5000 |
| Use Case | Gaming | General Use | Workstation | Server | Gaming |
| Product Name | MEM-2951-512U2GB | MEM-2900-2GB= | MEM-2900-512U1GB | MEM-2900-512U2.5GB | MEM-2951-512U2.5GB |
| Height | 1.2 inches | 1.18 inches | N/A | 1.2 inches | 1.2 inches |
| Width | 5.0 inches | 5.25 inches | N/A | 5.3 inches | 5.3 inches |
| Depth | 0.5 inches | 0.12 inches | N/A | 0.3 inches | 0.6 inches |
| Weight | 0.3 lbs | 0.2 lbs | N/A | 0.5 lbs | 0.2 lbs |
Reviews & Ratings
Q
Quentin Marshall
4
Cisco certified DIMM ensured compatibility.
R
Rafael Ortiz
5
Router handled heavier loads smoothly.
S
Sebastian Lowe
3
Simple upgrade with immediate benefits.
T
Trevor Mills
4
Reliable memory choice.
Questions & Answers
What is the MEM-2951-512U2GB DRAM upgrade for Cisco 2951 ISR?
The MEM-2951-512U2GB is a 2 GB DDR3 DRAM DIMM module designed to upgrade the Cisco 2951 ISR’s base memory from 512 MB to 2 GB, enhancing system performance and app support.
Is the MEM-2951-512U2GB compatible with all Cisco 2951 ISR models?
Yes. This 2 GB DIMM is fully compatible with every Cisco 2951 Integrated Services Router variant that accepts DDR3 ECC memory modules.
How do I install the 2 GB DRAM upgrade in my Cisco 2951 ISR?
Power off the router, remove the chassis cover, slot the 2 GB DIMM into the primary memory socket, secure the module, replace the cover, and power on. The system will auto-detect the new memory.
Does upgrading to 2 GB of DRAM improve Cisco 2951 ISR performance?
Yes. Increasing DRAM to 2 GB reduces paging, speeds up routing protocols, supports additional VPN and security features, and enables more advanced Cisco IOS processes.