United States$5,000,000+
Inventory Delivered By
S
Stephen Lawson
4
DRAM upgrade improved router responsiveness immediately.
MEM-1900-1GB=
Original Stock
Ready to Ship
1GB DRAM 1 DIMM FOR CISCO 1941/ 1941W ISR SPARE
FEATURED DEAL
Name:
MEM-1900-1GB=
- Description:
- 1GB DRAM 1 DIMM FOR CISCO 1941/ 1941W ISR SPARE
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 98378785452
- Condition:
- Warranty:
- 3
- List Price:
$792.00
- Price:
$210.0073.5% off
Quantity:
1
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MEM-1900-1GB= Overview
MEM-1900-1GB= is a high-performance DDR4 UDIMM engineered for reliable operation in desktop, laptop, and server builds. It runs at 1600 MHz with a CAS latency of CL16 and a standard operating voltage of 1.2V, providing a stable 1GB module solution that is non-ECC and unbuffered with an integrated heatspreader for effective thermal management.
Designed for general use, the MEM-1900-1GB= module comes in a single channel kit configuration, making it well suited for entry-level gaming, workstations, or server environments where cost-effective, dependable memory is paramount. Without RGB lighting and with broad platform compatibility, this module delivers essential computing performance while focusing solely on durability and value.
MEM-1900-1GB= price is $210.00, a 73.5% saving from the Cisco list price of $792.00. MEM-1900-1GB= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-1900-1GB= for additional pricing. Browse the full 1900 Router Memory & Flash series or explore all Cisco products.
MEM-1900-1GB= Specifications
- Height
- 1.4 inches
- Width
- 5 inches
- Depth
- 0.5 inches
- Weight
- 0.15 lbs
- Operating Temperature
- N/A
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Compatible Platforms
- Desktop / Laptop / Server
- Form Factor
- UDIMM
- Reliability Rating
- Standard
- CAS Latency (CL)
- CL16
- ECC Support
- No
- Registered/Buffered
- Unbuffered
- RGB Lighting
- No
- Heatsink / Heatspreader
- Yes
- Kit Configuration
- Single Channel
- Intel Platform Support
- N/A
- Compatible Systems
- N/A
- Voltage
- 1.2V
- AMD Platform Support
- N/A
- XMP Support
- No
- Capacity
- 1GB
- Speed
- 1600 MHz
- Use Case
- General Use
- Product Name
- MEM-1900-1GB=
MEM-1900-1GB= Use Case
Optimizing IPsec VPN Throughput on Cisco 1941 with MEM-1900-1GB Spare DIMM
In a distributed enterprise, deploying the MEM-1900-1GB DRAM 1 DIMM spare for Cisco 1941/1941W ISR routers ensures seamless bandwidth management for multiple IPsec VPN tunnels. This memory upgrade maintains stable throughput over 100 Mbps per site, enhances encryption processing, and secures branch-to-data-center connectivity with zero downtime.
Accelerating Cloud-Based SaaS Access via Enhanced Caching on Cisco 1941
A retail network running SaaS applications through Cisco 1941/1941W ISR routers leverages the MEM-1900-1GB DRAM 1 DIMM spare to expand WAN caching and QoS buffer capacity. The additional memory reduces application latency by 25 %, cuts bandwidth usage by 30 %, and delivers a smoother user experience for POS and inventory systems.
Ensuring Business Continuity with Onsite MEM-1900-1GB Spare for Cisco 1941W
An IT services firm pre-stocks the MEM-1900-1GB DRAM 1 DIMM spare for remote healthcare clinics using Cisco 1941W ISRs. Rapid on-site replacement in under 15 minutes guarantees 99.99 % network uptime, minimizes MTTR, and eliminates service interruptions for critical patient data transmissions.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| MEM-1900-1GB= |  MEM-1900-512U1.5GB |  MEM-1900-2GB |  MEM-1900-512U1GB |  MEM-1900-2GB= | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR3 |
| Capacity | 1GB | 512 GB | 2 GB | 512 GB | 2 GB |
| Compatible Platforms | Desktop / Laptop / Server | Desktop | Desktop / Laptop / Server | Desktop | Laptop |
| Compatible Systems | N/A | N/A | Workstation | Workstation | N/A |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | SODIMM |
| Kit Configuration | Single Channel | Single Channel | Single Channel | Single Channel | Single Channel |
| Speed | 1600 MHz | 3200 MHz | 2133 MHz | 1900 MHz | 1600 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 | CL15 | CL16 | CL11 |
| Voltage | 1.2V | 1.5V | 1.35V | 1.35V | 1.5V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | No | No | No | No | No |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | No |
| Intel Platform Support | N/A | N/A | Intel 10th Gen | Intel 10th Gen | N/A |
| AMD Platform Support | N/A | N/A | AMD Ryzen 3000 | AMD Ryzen 3000 | N/A |
| Use Case | General Use | Gaming | Gaming / Workstation / Server | Workstation | General Use |
| Product Name | MEM-1900-1GB= | MEM-1900-512U1.5GB | MEM-1900-2GB | MEM-1900-512U1GB | MEM-1900-2GB= |
| Height | 1.4 inches | N/A | 1.18 inches | 1.2 inches | N/A |
| Width | 5 inches | N/A | 5.25 inches | 5.3 inches | N/A |
| Depth | 0.5 inches | N/A | 0.12 inches | 0.6 inches | N/A |
| Weight | 0.15 lbs | N/A | 0.1 lbs | 0.25 lbs | N/A |
Reviews & Ratings
B
Brian Fletcher
4
Cisco memory worked perfectly in our 1941 ISR.
E
Edward Simmons
4
Simple upgrade with noticeable performance gains.
M
Martin Douglas
5
Reliable DRAM with expected Cisco quality.
O
Oliver Kent
4
Good option for extending router lifespan.
Questions & Answers
What is the MEM-1900-1GB= module?
The MEM-1900-1GB= is a 1 GB DRAM 1 DIMM memory upgrade module designed as a spare part for Cisco 1941 and 1941W ISR routers.
Is the MEM-1900-1GB= compatible with Cisco 1941 ISR routers?
Yes. The MEM-1900-1GB= is fully compatible with Cisco 1941 and 1941W Integrated Services Routers and meets Cisco’s memory specifications.
How do I install the MEM-1900-1GB= in my Cisco 1941 router?
Power off the router, remove the chassis cover, insert the DIMM into the memory slot until it clicks, replace the cover, and power on the device.
What performance benefit does the MEM-1900-1GB= provide?
Upgrading to 1 GB DRAM improves routing performance, enables advanced security and VPN features, and supports higher traffic throughput.
Can I mix the MEM-1900-1GB= with existing memory modules?
Cisco recommends using identical DRAM modules for optimal stability. Mixing different densities or speeds may impact performance.
Does the MEM-1900-1GB= module require firmware updates?
No separate firmware is required. The module works with the existing Cisco IOS version supported by the 1941/1941W platform.
What warranty covers the MEM-1900-1GB=?
The MEM-1900-1GB= is backed by Cisco’s limited lifetime warranty, covering defects in materials and workmanship.
How can I verify the MEM-1900-1GB= installation?
Use the Cisco IOS command `show version` or `show memory` to confirm the router recognizes the new 1 GB DRAM.
Is the MEM-1900-1GB= compatible with Cisco 1941W wireless models?
Yes. The module is validated for both wired Cisco 1941 and wireless 1941W ISR models.
What shipping options are available for MEM-1900-1GB=?
We offer standard, expedited, and overnight shipping. Delivery times vary by region—select at checkout.
What is the return policy for MEM-1900-1GB=?
You can return unopened modules within 30 days for a full refund. Opened modules are subject to restocking fees.
How does the MEM-1900-1GB= improve VPN performance?
Additional DRAM enables larger VPN tunnels and more simultaneous encrypted sessions, reducing latency and packet loss.
Can I purchase MEM-1900-1GB= as a spare part?
Yes. The module is sold individually as a Cisco-authorized spare part for field upgrades or replacements.
What are the technical specifications of MEM-1900-1GB=?
DDR2 SDRAM, 200-pin DIMM, 1 GB capacity, 533 MHz speed, CL4 latency, operating temperature 0–70 °C.
Does MEM-1900-1GB= require any configuration changes?
No manual configuration is needed. The router automatically detects and utilizes the additional memory at boot.
Where can I get technical support for MEM-1900-1GB=?
Cisco Technical Assistance Center (TAC) provides 24/7 support for installation, troubleshooting, and configuration questions.