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Basic DRAM replacement that restored normal performance.
MEM-1900-512MB
Cisco Memory MEM-1900-512MB
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Name:
MEM-1900-512MB
- Description:
- Cisco Memory MEM-1900-512MB
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658278297
- Condition:
- Warranty:
- 3
- List Price:
$645.00
- Price:
$211.0067.3% off
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1
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MEM-1900-512MB Overview
MEM-1900-512MB is a high-performance DDR4 memory module built in a standard UDIMM form factor, engineered to deliver reliable speed and efficiency with a 2133 MHz operating frequency, CL15 latency, and a voltage of 1.2V. The module offers a robust 512 GB capacity configured as a single-channel kit, providing a balanced solution for systems that demand consistent performance.
This non-ECC, unbuffered memory is equipped with an integrated heatspreader that ensures optimal thermal management, making it compatible with desktop, server, and laptop platforms. Ideal for gaming builds as well as workstation applications, MEM-1900-512MB meets the needs of users seeking stability, versatility, and reliable efficiency in their computing systems.
MEM-1900-512MB price is $211.00, a 67.3% saving from the Cisco list price of $645.00. MEM-1900-512MB is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-1900-512MB for additional pricing. Browse the full 1900 Router Memory & Flash series or explore all Cisco products.
MEM-1900-512MB Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 512 GB
- Compatible Platforms
- Desktop / Laptop / Server
- Compatible Systems
- Workstation
- Form Factor
- UDIMM
- Kit Configuration
- Single Channel
- Speed
- 2133 MHz
- Operating Temperature
- N/A
- Reliability Rating
- Standard
- CAS Latency (CL)
- CL15
- Voltage
- 1.2V
- 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-1900-512MB
- Height
- 1.4 inches
- Width
- 5.3 inches
- Depth
- 0.3 inches
- Weight
- 0.3 lbs
MEM-1900-512MB Use Case
Edge Router Performance Upgrade for High-Traffic Retail Branches
In a national retail chain, MEM-1900-512MB-Cisco Memory MEM-1900-512MB is installed on ISR 1900 series edge routers to boost routing table capacity and accelerate IOS feature processing. This upgrade enables real-time inventory synchronization, secure VPN connectivity for PoS transactions, and sub-millisecond failover — delivering 40% faster packet throughput and uninterrupted customer service.
Scaling VoIP Gateway Capacity in Service Provider Networks
A telecom operator leverages MEM-1900-512MB-Cisco Memory MEM-1900-512MB on Cisco 1900 series routers hosting H.323 and SIP gateways. By expanding call-session buffers and reducing memory contention during peak hours, the provider supports 30% more concurrent VoIP calls, minimizes dropped sessions, and maintains carrier-grade voice quality with consistent MOS scores above 4.0.
Advanced Intrusion Detection and Firewall Throughput at Corporate HQ
A Fortune 500 headquarters deploys MEM-1900-512MB-Cisco Memory MEM-1900-512MB on ISR 1900 routers running integrated ASA services and Snort-based intrusion prevention. The additional 512 MB RAM accommodates expanded signature sets and concurrent deep-packet inspections, boosting firewall throughput by 25% and reducing security blind spots — ensuring compliance with ISO 27001 and continuous threat mitigation.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 MEM-1900-512MB |  MEM-1900-512U1GB |  MEM-1900-512U1.5GB |  MEM-1900-1GB |  MEM-1900-512U2.5GB | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR4 |
| Capacity | 512 GB | 512 GB | 512 GB | 1 GB | 512 GB |
| Compatible Platforms | Desktop / Laptop / Server | Desktop | Desktop | Desktop / Laptop / Server | Desktop / Server |
| Compatible Systems | Workstation | Workstation | N/A | N/A | Workstation |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Single Channel | Single Channel | Single Channel | Quad Channel |
| Speed | 2133 MHz | 1900 MHz | 3200 MHz | 1600 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) | CL15 | CL16 | CL16 | CL16 | CL16 |
| Voltage | 1.2V | 1.35V | 1.5V | 1.2V | 1.35V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | Intel XMP 2.0 | No | No | No | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | Yes | Yes | No | Yes |
| Intel Platform Support | Intel 12th Gen | Intel 10th Gen | N/A | N/A | Intel 13th Gen |
| AMD Platform Support | AMD Ryzen 5000 | AMD Ryzen 3000 | N/A | N/A | AMD Ryzen 5000 |
| Use Case | Gaming | Workstation | Gaming | General Use | Workstation |
| Product Name | MEM-1900-512MB | MEM-1900-512U1GB | MEM-1900-512U1.5GB | MEM-1900-1GB | MEM-1900-512U2.5GB |
| Height | 1.4 inches | 1.2 inches | N/A | N/A | 1.2 inches |
| Width | 5.3 inches | 5.3 inches | N/A | N/A | 5.3 inches |
| Depth | 0.3 inches | 0.6 inches | N/A | N/A | 0.8 inches |
| Weight | 0.3 lbs | 0.25 lbs | N/A | N/A | 0.5 lbs |
Reviews & Ratings
B
Brian Marshall
4
Cisco memory worked without compatibility problems.
E
Edward Price
5
Adequate for light routing workloads.
M
Martin Shaw
3
Easy install and stable operation.
O
Oliver Reed
4
Good choice for legacy configurations.
Questions & Answers
What is Cisco Memory MEM-1900-512MB?
Cisco Memory MEM-1900-512MB is a 512 MB 72-pin SDRAM expansion module designed specifically for Cisco 1900 Series Integrated Service Routers.
Which Cisco devices is MEM-1900-512MB compatible with?
MEM-1900-512MB is compatible with Cisco 1900 Series routers, including models 1901, 1941, and 1941W running Cisco IOS.
What type of memory does MEM-1900-512MB use?
MEM-1900-512MB uses 60 ns 72-pin SDRAM with parity checking to ensure reliable data integrity in Cisco routers.
How do I install MEM-1900-512MB in my router?
Power off the router, remove the chassis cover, insert the module into the SDRAM slot until it seats firmly, replace the cover, and power on.