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128MB SODIMM DRAM upgrade improves performance and reliability for Cisco 1841 routers.
MEM1841-128D
MEM1841-128D Cisco 1841 128MB SODIMM DRAM
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MEM1841-128D
- Description:
- MEM1841-128D Cisco 1841 128MB SODIMM DRAM
- Rating:
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In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 601202741687
- Condition:
- Warranty:
- 3
- List Price:
$1,000.00
- Price:
$462.0053.8% off
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1
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MEM1841-128D Overview
MEM1841-128D is a high-performance DDR4 memory module built in a UDIMM form factor, delivering reliable speeds of 3200 MHz with a CAS latency of CL16 and an operating voltage of 1.35V. Designed as a dual channel kit, this module is optimized for desktop environments, specifically targeting gamers and high-performance workstations.
Featuring an efficient heatspreader for superior thermal management, MEM1841-128D is a non-ECC and unbuffered solution that supports modern Intel 12th Gen and AMD Ryzen 5000 platforms. Its versatile design makes it an ideal choice for desktop, server, and laptop configurations, ensuring smooth performance even under the most demanding conditions.
MEM1841-128D price is $462.00, a 53.8% saving from the Cisco list price of $1,000.00. MEM1841-128D is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM1841-128D for additional pricing. Browse the full 1800 Router Memory & Flash series or explore all Cisco products.
MEM1841-128D Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 128 GB
- Compatible Platforms
- Desktop / Laptop / Server
- 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
- MEM1841-128D
- Height
- 1.2 inches
- Width
- 5.3 inches
- Depth
- 0.3 inches
- Weight
- 0.25 lbs
MEM1841-128D Use Case
Enhanced Branch Office Connectivity with MEM1841-128D 128MB SODIMM DRAM
In a mid-size enterprise deploying Cisco 1841 routers at distributed branch offices, upgrading to the MEM1841-128D 128MB SODIMM DRAM eliminates performance bottlenecks when running VoIP, MPLS VPN and integrated firewall services concurrently. The extra memory expands routing table capacity, cuts packet latency by 30% and ensures consistent QoS, resulting in higher end-user productivity and a 25% reduction in support tickets.
Secure Scalable VPN Gateway Using Cisco 1841 128MB DRAM
An SMB implements its Cisco 1841 as a DMVPN hub servicing 50+ remote employees. By installing the MEM1841-128D 128MB SODIMM DRAM module, the router handles concurrent IPsec encryption sessions at sustained 20 Mbps per tunnel while preserving CPU headroom. The upgrade delivers reliable, low-latency secure access, slashes VPN downtime by 40% and simplifies centralized policy management.
Real-Time IoT Data Aggregation in Industrial Automation
A manufacturing plant uses the Cisco 1841 as an IoT aggregator for 100+ sensor endpoints. The MEM1841-128D 128MB SODIMM DRAM boosts SNMP polling and NetFlow buffer capacity, enabling real-time telemetry analysis without packet loss. This improvement yields a 25% decrease in data drops, proactive fault detection and a 15% increase in overall operational efficiency.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 MEM1841-128D |  MEM1800-32CF | |
|---|---|---|
| Product Type | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 |
| Capacity | 128 GB | 32 GB |
| Compatible Platforms | Desktop / Laptop / Server | Desktop |
| Compatible Systems | Workstation | N/A |
| Form Factor | UDIMM | UDIMM |
| Kit Configuration | Dual Channel | Dual Channel |
| Speed | 3200 MHz | 3200 MHz |
| Operating Temperature | N/A | N/A |
| Reliability Rating | Standard | Standard |
| CAS Latency (CL) | CL16 | CL16 |
| Voltage | 1.35V | 1.35V |
| ECC Support | No | No |
| Registered/Buffered | Unbuffered | Unbuffered |
| XMP Support | Intel XMP 2.0 | Intel XMP 2.0 |
| RGB Lighting | No | No |
| Heatsink / Heatspreader | Yes | Yes |
| Intel Platform Support | Intel 12th Gen | Intel 10th Gen |
| AMD Platform Support | AMD Ryzen 5000 | AMD Ryzen 3000 |
| Use Case | Gaming | Gaming |
| Product Name | MEM1841-128D | MEM1800-32CF |
| Height | 1.2 inches | 1.4 inches |
| Width | 5.3 inches | 5.3 inches |
| Depth | 0.3 inches | 0.5 inches |
| Weight | 0.25 lbs | 0.3 lbs |
Reviews & Ratings
S
Sophie Wells
5
Easy installation and stable operation.
V
Victor Hayes
4
Enhances router performance significantly.
N
Natalie Finch
5
Reliable memory upgrade for enterprise networking devices.
J
Julian Hunt
5
Boosts processing and reduces latency in legacy Cisco 1841 routers.
Questions & Answers
What is the memory capacity of the Cisco MEM1841-128D module?
The Cisco MEM1841-128D provides 128 MB of DDR SODIMM DRAM, designed to expand the memory of Cisco 1841 routers.
Which type of memory module is the MEM1841-128D?
The MEM1841-128D is a DDR Synchronous DRAM (SDRAM) 200-pin SODIMM, specifically engineered for Cisco routing platforms.
Is the MEM1841-128D compatible with Cisco 1841 routers?
Yes. Cisco certifies the MEM1841-128D for seamless operation with Cisco 1841 series routers without additional configuration.
How do I install the MEM1841-128D in my Cisco 1841 router?
Power down the router, remove the cover, insert the MEM1841-128D SODIMM into the DIMM slot at a 30° angle until it clicks, then replace the cover and power up.
Does the MEM1841-128D support error-correcting code (ECC)?
No. The MEM1841-128D is non-ECC memory, as the Cisco 1841 platform does not support ECC on its SODIMM slots.
Can I mix the MEM1841-128D with other memory modules?
No. Cisco recommends using identical MEM1841-128D modules in matched pairs to ensure stability and performance.
What are the voltage requirements for the MEM1841-128D?
The MEM1841-128D operates at 2.5 V nominal, matching the Cisco 1841 router’s standard SODIMM power specifications.
What is the operating temperature range of the MEM1841-128D?
The MEM1841-128D is rated for 0 °C to 70 °C (32 °F to 158 °F) ambient temperature for reliable performance in typical networking environments.
What performance improvements does the MEM1841-128D provide?
Upgrading to MEM1841-128D increases packet buffering and routing table capacity, reducing latency and improving throughput under load.
Does the MEM1841-128D come with a warranty?
Yes. Cisco backs the MEM1841-128D with a limited lifetime warranty, covering defects in materials and workmanship.
How can I verify that my MEM1841-128D is genuine Cisco memory?
Inspect the Cisco serial number label, verify part number MEM1841-128D, and confirm authenticity via Cisco’s online warranty lookup tool.
Where can I purchase the Cisco MEM1841-128D module?
Authorized Cisco resellers and the Cisco online store stock the MEM1841-128D; always confirm reseller certification to ensure genuine parts.
Does the MEM1841-128D require any software configuration after installation?
No. Once installed and the router is powered on, the Cisco IOS automatically recognizes and utilizes the additional memory.
What is the official Cisco part number for the 128 MB memory upgrade?
The official part number for the 128 MB SODIMM upgrade for Cisco 1841 is MEM1841-128D.
How does adding the MEM1841-128D module improve router performance?
Increasing DRAM to 128 MB allows larger routing tables and more simultaneous processes, enhancing packet processing and VPN throughput.
What distinguishes the Cisco MEM1841-128D from generic SODIMM modules?
Cisco MEM1841-128D is factory-tested to Cisco specifications, ensuring compatibility, optimized timing, and firmware-level support unavailable in generic modules.