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MEM-2951-512U2GB
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- 512MB to 2GB DRAM Upgrade (1 2GB DIMM) for Cisco 2951 ISR
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MEM-2951-512U2GB
512MB to 2GB DRAM Upgrade (1 2GB DIMM) for Cisco 2...
$900.00
$337.00
26 in Global Warehouse
$337.00
63% off
TRUSTED, TRIED, PROVEN
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.
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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
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| AMD Platform Support | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD EPYC | N/A | AMD Ryzen 5000 |
| Capacity | 2 GB | 512 GB | 512 GB | 512 GB | 512 GB |
| CAS Latency (CL) | CL16 | CL16 | CL16 | CL16 | CL16 |
| Compatible Platforms | Desktop / Laptop / Server | Desktop | Desktop / Server | Desktop / Server | Desktop |
| Compatible Systems | N/A | N/A | Rack Server | N/A | Workstation |
| Depth | 0.12 inches | 0.6 inches | 0.3 inches | N/A | 0.5 inches |
| ECC Support | No | No | No | No | No |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Heatsink / Heatspreader | No | Yes | Yes | Yes | Yes |
| Height | 1.18 inches | 1.2 inches | 1.2 inches | N/A | 1.2 inches |
| Intel Platform Support | Intel 10th Gen | Intel 12th Gen | Intel Xeon Scalable | N/A | Intel 12th Gen |
| Kit Configuration | Single Channel | Single Channel | Single Channel | Single Channel | Dual Channel |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR4 |
| Operating Temperature | N/A | N/A | N/A | N/A | N/A |
| Product Name | MEM-2900-2GB= | MEM-2951-512U2.5GB | MEM-2900-512U2.5GB | MEM-2900-512U1GB | MEM-2951-512U2GB |
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| Reliability Rating | Standard | Standard | Standard | Standard | Standard |
| RGB Lighting | No | No | No | No | No |
| Speed | 2933 MHz | 3200 MHz | 3200 MHz | 2900 MHz | 3200 MHz |
| Use Case | General Use | Gaming | Server | Workstation | Gaming |
| Voltage | 1.2V | 1.35V | 1.35V | 1.35V | 1.35V |
| Weight | 0.2 lbs | 0.2 lbs | 0.5 lbs | N/A | 0.3 lbs |
| Width | 5.25 inches | 5.3 inches | 5.3 inches | N/A | 5.0 inches |
| XMP Support | No | Intel XMP 2.0 | No | No | Intel XMP 2.0 |
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Questions & Answers
Q
What is the MEM-2951-512U2GB DRAM upgrade for Cisco 2951 ISR?
A
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.
Q
Is the MEM-2951-512U2GB compatible with all Cisco 2951 ISR models?
A
Yes. This 2 GB DIMM is fully compatible with every Cisco 2951 Integrated Services Router variant that accepts DDR3 ECC memory modules.
Q
How do I install the 2 GB DRAM upgrade in my Cisco 2951 ISR?
A
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.
Q
Does upgrading to 2 GB of DRAM improve Cisco 2951 ISR performance?
A
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.
Q
Is ECC (error-correcting code) supported on this memory module?
A
Yes. The MEM-2951-512U2GB is an ECC-capable DDR3 module, ensuring data integrity and error correction for mission-critical network applications.
Q
Can I mix the 2 GB DIMM with existing DRAM modules in the same router?
A
No. To ensure optimal stability and performance, replace the existing 512 MB module with the 2 GB DIMM rather than mixing different capacities.
Q
Will the Cisco IOS require an update after installing the new memory?
A
No IOS update is mandatory. However, upgrading to a later IOS release may unlock advanced features that leverage the additional 2 GB memory.
Q
Does the memory upgrade affect router startup time?
A
Startup time may increase marginally due to DRAM initialization checks, but overall system responsiveness and feature availability improve significantly.
Q
What warranty covers the MEM-2951-512U2GB upgrade?
A
This module is backed by a one-year limited warranty covering manufacturing defects and guaranteed compatibility with Cisco 2951 ISR platforms.
Q
Can I return the DRAM module if it’s not compatible with my router?
A
Yes. We offer a 30-day no-questions-asked return policy. The module must be unused or returned in original condition for a full refund.
Q
Does installing additional DRAM require a Cisco service contract?
A
No. Physical installation of supported memory upgrades does not require an active Cisco service contract, though support coverage is recommended.
Q
How much power does the 2 GB DIMM consume in a Cisco 2951 ISR?
A
The DDR3 2 GB module draws approximately 2.5 W under typical load, which is within the router’s design specifications for memory expansion.
Q
Will this upgrade support advanced VPN and encryption features?
A
Yes. With 2 GB of DRAM, the Cisco 2951 ISR can handle higher throughput VPN tunnels and resource-intensive encryption services without performance degradation.
Q
Are any special tools required for memory installation?
A
No special tools are needed. A standard Phillips screwdriver to open the chassis and ESD protection gear (wrist strap) are all that’s required.
Q
How can I verify that the new 2 GB module is recognized by the router?
A
After boot, enter CLI mode and run "show platform hardware qfp active feature memory" or "show version". The total DRAM field will reflect 2 GB.
Q
Does this memory upgrade affect the router’s operating temperature?
A
No. The module meets Cisco’s thermal design guidelines and operates within the standard 0 °C to 40 °C ambient temperature range for the 2951 ISR.
