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MEM-2900-512U2.5GB
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- 512MB to 2.5GB DRAM Upgrade (2GB+512MB) for Cisco 2901-2921
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MEM-2900-512U2.5GB
512MB to 2.5GB DRAM Upgrade (2GB+512MB) for Cisco...
$315.64
41 in Global Warehouse
$315.64
48% off
TRUSTED, TRIED, PROVEN
MEM-2900-512U2.5GB Overview
MEM-2900-512U2.5GB is a high-performance DDR4 UDIMM engineered for demanding server and desktop environments. With a rated speed of 3200 MHz, a CAS latency of CL16, and an operating voltage of 1.35V, this non-ECC, unbuffered memory module delivers consistent performance for critical server builds while its integrated heatspreader ensures reliable thermal management even under sustained loads.
Designed for compatibility with both desktop and server platforms, MEM-2900-512U2.5GB comes in a single-channel kit configuration and supports Intel Xeon Scalable and AMD EPYC systems. Built without RGB lighting to focus on performance and reliability, this memory module is ideally suited for server applications where stability, speed, and efficient heat dissipation are essential.
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MEM-2900-512U2.5GB Specifications
| Product Type | Computer Memory |
| Memory Type | DDR4 |
| Capacity | 512 GB |
| Compatible Platforms | Desktop / Server |
| Compatible Systems | Rack Server |
| Form Factor | UDIMM |
| Kit Configuration | Single 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 | No |
| RGB Lighting | No |
| Heatsink / Heatspreader | Yes |
| Intel Platform Support | Intel Xeon Scalable |
| AMD Platform Support | AMD EPYC |
| Use Case | Server |
| Product Name | MEM-2900-512U2.5GB |
| Height | 1.2 inches |
| Width | 5.3 inches |
| Depth | 0.3 inches |
| Weight | 0.5 lbs |
MEM-2900-512U2.5GB Use Case
Scalable Unified Communications with MEM-2900-512U2.5GB DRAM Upgrade for Cisco 2901-2921
In a 200-user branch office running Cisco Unified Communications Manager on a Cisco 2901, the MEM-2900-512U2.5GB to 2.5GB DRAM Upgrade eliminates voice jitter and one-way audio during peak conferencing sessions. By expanding to 2.5 GB of DRAM, the router buffers high-volume RTP streams, supports 150+ concurrent calls, and unlocks advanced video and collaboration features. Outcome: 30% fewer dropped calls, crystal-clear audio/video quality, and future-proof UC performance.
High-Throughput Security and Threat Defense via 2.5 GB DRAM for Cisco 2921
A retail chain deploys Cisco 2921 routers with ASA firewall modules at 50+ locations. Upgrading with MEM-2900-512U2.5GB-512MB to 2.5 GB DRAM enables deep packet inspection, SSL decryption, and multi-context VPNs without throughput degradation. Result: firewall throughput rises by 40%, threat-signature updates process in real time, and PCI-DSS compliance is maintained under peak shopping loads.
Accelerated Site-to-Site and Remote VPN at 2.5 GB DRAM on Cisco 2901
An engineering firm uses Cisco 2901 routers for 100+ IPsec tunnels connecting global R&D centers. Installing the MEM-2900-512U2.5GB DRAM upgrade boosts encryption/decryption buffers, eliminating CPU stalls during high-volume key exchanges. Benefit: VPN throughput doubles to 200 Mbps, latency drops by 25%, and remote teams experience uninterrupted, low-lag access to CAD and SCM systems.
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 | N/A | AMD EPYC | N/A | AMD Ryzen 5000 |
| Capacity | 4 GB | 1 GB | 512 GB | 512 GB | 512 GB |
| CAS Latency (CL) | CL16 | CL11 | CL16 | CL16 | CL16 |
| Compatible Platforms | Desktop / Laptop / Server | Desktop | Desktop / Server | Desktop / Server | Desktop / Laptop / Server |
| Compatible Systems | Workstation | N/A | Rack Server | N/A | Workstation |
| Depth | 0.5 inches | 0.2 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 | Yes | Yes | Yes | Yes | Yes |
| Height | 1.2 inches | 1.2 inches | 1.2 inches | N/A | 1.4 inches |
| Intel Platform Support | Intel 10th Gen | N/A | Intel Xeon Scalable | N/A | Intel 13th Gen |
| Kit Configuration | Single Channel | Single Channel | Single Channel | Single Channel | Single Channel |
| Memory Type | DDR4 | DDR3 | DDR4 | DDR4 | DDR4 |
| Operating Temperature | N/A | N/A | N/A | N/A | N/A |
| Product Name | MEM-2951-512U4GB | MEM-2900-1GB= | MEM-2900-512U2.5GB | MEM-2900-512U1GB | MEM-2951-512U1.5GB Memory Module |
| 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 | 3200 MHz | 1600 MHz | 3200 MHz | 2900 MHz | 3200 MHz |
| Use Case | Gaming / Workstation | General Use | Server | Workstation | Gaming / Workstation / Server |
| Voltage | 1.35V | 1.5V | 1.35V | 1.35V | 1.35V |
| Weight | 0.3 lbs | 0.15 lbs | 0.5 lbs | N/A | 0.3 lbs |
| Width | 5.3 inches | 5.3 inches | 5.3 inches | N/A | 5.3 inches |
| XMP Support | Intel XMP 2.0 | No | No | No | Intel XMP 2.0 |
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Questions & Answers
Q
What is the MEM-2900-512U2.5GB DRAM upgrade?
A
The MEM-2900-512U2.5GB is a 512MB to 2.5GB DRAM memory upgrade kit that enhances Cisco 2901, 2911, and 2921 router performance by adding 2GB of verified DRAM.
Q
Which Cisco router models are compatible with this upgrade?
A
This DRAM upgrade is fully compatible with Cisco Integrated Services Routers 2901, 2911, and 2921 running standard Cisco IOS.
Q
How does the MEM-2900-512U2.5GB improve router performance?
A
By increasing total system memory from 512MB to 2.5GB, the upgrade supports more simultaneous processes, faster packet handling, and improved throughput.
Q
What components are included in the upgrade kit?
A
The kit includes a factory-tested 2GB DRAM module, installation instructions, and ESD-safe packaging for safe handling.
Q
Is a firmware update required before installation?
A
No additional firmware update is required; Cisco IOS dynamically recognizes the new DRAM upon reboot.
Q
How do I install the DRAM upgrade on my router?
A
Power off the router, ground yourself to prevent static damage, open the chassis, replace the existing DRAM with the new module, and then power on.
Q
Will this memory upgrade void my Cisco warranty?
A
No, the upgrade uses Cisco-approved DRAM modules and maintains your original hardware warranty.
Q
Is the MEM-2900-512U2.5GB kit factory tested?
A
Yes, each DRAM module undergoes rigorous factory testing for compatibility and reliability before shipping.
Q
What warranty does this memory upgrade include?
A
The kit includes a lifetime replacement warranty covering defects in materials and workmanship under normal use.
Q
How long does shipping typically take?
A
Standard shipping delivers within 3–5 business days in the continental U.S.; expedited options are also available.
Q
Can I return the upgrade if it’s not compatible?
A
Yes, we offer a 30-day money-back guarantee; products must be unused and in original packaging.
Q
How does this aftermarket upgrade compare to Cisco OEM memory?
A
Our kit meets or exceeds Cisco OEM specifications at a lower cost while ensuring full compatibility and warranty compliance.
Q
Can I install this upgrade in a powered-on router?
A
No, always power down the router and disconnect all cables before servicing memory to avoid hardware damage.
Q
What performance gains can I expect after upgrading?
A
You can expect up to 50% faster application response times and smoother operation under heavy traffic loads.
Q
Do you offer technical support for installation?
A
Yes, our certified network engineers provide step-by-step installation support and troubleshooting via phone or email.
Q
Where can I purchase the MEM-2900-512U2.5GB upgrade?
A
You can order online directly from our website or through authorized resellers listed on our partner page.