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MEM-1900-512MB
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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:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 0882658278297
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
- 3
- List Price:
$645.00
- Price:
$211.0067.3% off
Quantity:
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
- Brand
- Cisco
- Memory Type
- DDR4
- Capacity
- 512 GB
- Compatible Platforms
- Desktop / Laptop / Server
- Compatible Systems
- Workstation
- Form Factor
- UDIMM
- Kit Configuration
- Single Channel
- Speed
- 2133 MHz
- 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.
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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 |
| 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 |
| 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 |
| 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 |
Compliance & Warranty
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
R
Richard Nolan
4
Basic DRAM replacement that restored normal performance.
B
Brian Marshall
5
Cisco memory worked without compatibility problems.
E
Edward Price
5
Adequate for light routing workloads.
M
Martin Shaw
4
Easy install and stable operation.
O
Oliver Reed
5
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.
Is software configuration required after installing MEM-1900-512MB?
No configuration is required; the router automatically detects and utilizes the additional 512 MB of memory on reboot.
What performance benefits does MEM-1900-512MB provide?
Adding 512 MB of SDRAM boosts routing table capacity, supports more VPN and QoS sessions, and reduces memory-related bottlenecks.
Does installing MEM-1900-512MB require router downtime?
Yes, the router must be powered off during installation; the process typically takes under five minutes.
Is MEM-1900-512MB covered by a warranty?
Yes, when purchased through authorized Cisco channels, MEM-1900-512MB includes a limited lifetime Cisco warranty.
Where can I purchase genuine MEM-1900-512MB modules?
You can purchase authentic MEM-1900-512MB modules directly from Cisco or authorized Cisco resellers.
How does MEM-1900-512MB improve Cisco IOS upgrades?
The additional memory accommodates larger Cisco IOS images and feature sets without running into memory allocation errors.
Is MEM-1900-512MB hot-swappable?
No, the memory module is not hot-swappable and requires the router to be powered off before installation.
How do I verify that MEM-1900-512MB is recognized?
Run the "show version" or "show memory" command in the router CLI to confirm total DRAM reflects the additional 512 MB.
What are the physical dimensions of MEM-1900-512MB?
The module measures approximately 3.5 × 0.5 × 1.0 inches and weighs under 0.1 lbs, fitting standard 72-pin slots.
Are there alternative memory upgrades for Cisco 1900 Series?
Yes, alternatives include MEM-1900-256MB and MEM-1900-1GB modules; verify compatibility with your router model and IOS version.
Does MEM-1900-512MB support error checking?
Yes, the SDRAM module features parity checking to detect and report memory errors in real time.
Can I install MEM-1900-512MB myself or do I need a technician?
Installation is straightforward and can be performed by network administrators following Cisco’s hardware installation guide.