United States$5,000,000+
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Daniel Whitmore
5
DRAM upgrade was straightforward and noticeably improved router responsiveness.
MEM-1900-512U1GB
UPG 512MB TO 1GB DRAM 512MB+512MB FOR CISCO 1941 ISR
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Name:
MEM-1900-512U1GB
- Description:
- UPG 512MB TO 1GB DRAM 512MB+512MB FOR CISCO 1941 ISR
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 11411537856
- Condition:
- Warranty:
- 3
- List Price:
$531.00
- Price:
$238.0055.2% off
Quantity:
1
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MEM-1900-512U1GB Overview
MEM-1900-512U1GB is a high-performance DDR4 computer memory module engineered in the UDIMM form factor for desktop systems. Designed for use in workstation builds, this module operates at a unique speed of 1900 MHz with a CAS latency of CL16 and a voltage of 1.35V, ensuring reliable performance with low signal delay in high-paced computing environments.
The module features a 512 GB capacity in a single channel kit configuration and is built as a non-ECC, unbuffered memory solution. It comes equipped with an integrated heatspreader for enhanced thermal management and is optimized for general workstation use without RGB lighting, making it ideal for users seeking stable performance in professional and productivity-oriented desktop systems.
MEM-1900-512U1GB price is $238.00, a 55.2% saving from the Cisco list price of $531.00. MEM-1900-512U1GB is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-1900-512U1GB for additional pricing. Browse the full 1900 Router Memory & Flash series or explore all Cisco products.
MEM-1900-512U1GB Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 512 GB
- Compatible Platforms
- Desktop
- Compatible Systems
- Workstation
- Form Factor
- UDIMM
- Kit Configuration
- Single Channel
- Speed
- 1900 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 10th Gen
- AMD Platform Support
- AMD Ryzen 3000
- Use Case
- Workstation
- Product Name
- MEM-1900-512U1GB
- Height
- 1.2 inches
- Width
- 5.3 inches
- Depth
- 0.6 inches
- Weight
- 0.25 lbs
MEM-1900-512U1GB Use Case
Secure Branch VPN Scalability with MEM-1900-512U1GB-UPG and Cisco 1941 ISR
A mid-market retailer deploys Cisco 1941 ISR routers at 20 branch locations to secure site-to-site IPsec tunnels. By installing the MEM-1900-512U1GB-UPG 512MB to 1GB DRAM upgrade, each router handles double the encryption sessions and achieves 40% higher VPN throughput. Outcome: Scalable, low-latency VPN performance with zero packet drops during peak hours.
Optimized VoIP and Collaboration on Cisco 1941 with MEM-1900-512U1GB-UPG
A professional services firm runs call-manager express and video conferencing on Cisco 1941 ISR at its headquarters. Upgrading to 1GB DRAM using the MEM-1900-512U1GB-UPG module eliminates voice jitter and reduces codec renegotiation. Outcome: Crystal-clear VoIP calls, consistent video quality, and 25% fewer dropped sessions, boosting client satisfaction.
High-Performance SD-WAN and Edge Firewall with MEM-1900-512U1GB-UPG
An enterprise IT team implements Cisco SD-WAN fabric and advanced threat defense on remote sites using Cisco 1941 ISR. The MEM-1900-512U1GB-UPG upgrade doubles DRAM capacity, supporting larger routing tables, BFD sessions, and deeper packet inspection. Outcome: Enhanced network resilience, 50% faster failover, and real-time threat mitigation across all branches.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 MEM-1900-512U1GB |  MEM-1900-2GB= |  MEM-1900-2GB |  MEM-1900-512U1.5GB |  MEM-1900-512U2.5GB | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR3 | DDR4 | DDR4 | DDR4 |
| Capacity | 512 GB | 2 GB | 2 GB | 512 GB | 512 GB |
| Compatible Platforms | Desktop | Laptop | Desktop / Laptop / Server | Desktop | Desktop / Server |
| Compatible Systems | Workstation | N/A | Workstation | N/A | Workstation |
| Form Factor | UDIMM | SODIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Single Channel | Single Channel | Single Channel | Quad Channel |
| Speed | 1900 MHz | 1600 MHz | 2133 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 | CL11 | CL15 | CL16 | CL16 |
| Voltage | 1.35V | 1.5V | 1.35V | 1.5V | 1.35V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | No | 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 10th Gen | N/A | Intel 10th Gen | N/A | Intel 13th Gen |
| AMD Platform Support | AMD Ryzen 3000 | N/A | AMD Ryzen 3000 | N/A | AMD Ryzen 5000 |
| Use Case | Workstation | General Use | Gaming / Workstation / Server | Gaming | Workstation |
| Product Name | MEM-1900-512U1GB | MEM-1900-2GB= | MEM-1900-2GB | MEM-1900-512U1.5GB | MEM-1900-512U2.5GB |
| Height | 1.2 inches | N/A | 1.18 inches | N/A | 1.2 inches |
| Width | 5.3 inches | N/A | 5.25 inches | N/A | 5.3 inches |
| Depth | 0.6 inches | N/A | 0.12 inches | N/A | 0.8 inches |
| Weight | 0.25 lbs | N/A | 0.1 lbs | N/A | 0.5 lbs |
Reviews & Ratings
O
Oliver Grant
4
Cisco memory worked perfectly in our 1941 ISR with no issues.
M
Matthew Cole
5
Good upgrade for extending the life of older ISR hardware.
R
Ryan Fletcher
3
Stable performance after installation with smoother multitasking.
J
James Holloway
4
Reliable Cisco DRAM delivering consistent results.
Questions & Answers
What is the MEM-1900-512U1GB upgrade for Cisco 1941 ISR?
The MEM-1900-512U1GB is a Cisco-qualified memory upgrade kit that expands your Cisco 1941 Integrated Services Router’s DRAM from 512 MB to 1 GB using two matched 512 MB SODIMM modules.
Is the MEM-1900-512U1GB fully compatible with Cisco 1941 ISR routers?
Yes. The MEM-1900-512U1GB has been tested and certified by Cisco for seamless compatibility with all Cisco 1941 ISR platforms running supported Cisco IOS versions.
What performance improvements can I expect from this memory upgrade?
Upgrading to 1 GB of DRAM enhances packet buffering, accelerates encryption tasks, improves VPN throughput, and supports larger routing tables for optimal 1941 ISR performance.
How much additional memory does the MEM-1900-512U1GB provide?
The kit adds an extra 512 MB of DRAM to the existing 512 MB, delivering a total of 1 GB of system memory for your Cisco 1941 ISR.