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MEM-ISE-512A-2PK
1GB Route Mem upg for 1 E3 card (2x512MB - needs 31S SW)
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MEM-ISE-512A-2PK is a DDR4 UDIMM memory module that delivers 3200 MHz speed with a CL16 latency and operates at 1.35V. This dual channel kit, which provides a total capacity of 32 GB (with each module rated at 16 GB), is engineered for compatibility with desktop and server builds and comes equipped with a heatspreader for robust thermal management.
MEM-ISE-512A-2PK features a non-ECC, unbuffered design with Intel XMP 2.0 support, ensuring reliable performance in high-demand scenarios such as gaming, workstation tasks, and server applications. It is officially supported on Intel 12th Gen and AMD Ryzen 5000 platforms, making it an optimal choice for users seeking efficient memory performance without extra frills.
MEM-ISE-512A-2PK price for new stock is $3,012.45, a 44.2% saving from the Cisco list price of $5,400.00. MEM-ISE-512A-2PK refurb price is $2,666.32. MEM-ISE-512A-2PK is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for MEM-ISE-512A-2PK for additional pricing. Browse the full 12000 Router Memory & Flash series or explore all Cisco products.
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| MEM-ISE-512A-2PK |  MEM-1900-512MB |  ASA5505-MEM-512 |  MEM-GRP/LC-128 |  SD-IE-1GB | |
|---|---|---|---|---|---|
| AMD Platform Support | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 3000 | AMD Ryzen 5000 |
| CAS Latency (CL) | CL16 | CL15 | CL16 | CL16 | CL16 |
| Capacity | 32 GB | 512 GB | 512 GB | 128 GB | 1 GB |
| Compatible Platforms | Desktop / Server | Desktop / Laptop / Server | Desktop / Laptop / Server | Desktop / Laptop / Server | Desktop / Laptop / Server |
| Depth | 0.47 inches | 0.3 inches | 0.05 inches | 0.5 inches | 0.75 inches |
| ECC Support | No | No | No | No | No |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | Yes |
| Height | 1.18 inches | 1.4 inches | 1.22 inches | 1.2 inches | 1.2 inches |
| Intel Platform Support | Intel 12th Gen | Intel 12th Gen | Intel 12th Gen | Intel 10th Gen | Intel 12th Gen |
| Kit Configuration | Dual Channel | Single Channel | Dual Channel | Quad Channel | Single Channel |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR4 |
| Product Name | MEM-ISE-512A-2PK | MEM-1900-512MB | ASA5505-MEM-512 | MEM-GRP/LC-128 | SD-IE-1GB |
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| RGB Lighting | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| Reliability Rating | Standard | Standard | Standard | Standard | Standard |
| Speed | 3200 MHz | 2133 MHz | 3200 MHz | 3200 MHz | 3200 MHz |
| Use Case | Gaming | Gaming | Gaming / Workstation / Server | Gaming / Workstation / Server | Gaming / Workstation / Server |
| Voltage | 1.35V | 1.2V | 1.2V | 1.35V | 1.35V |
| Weight | 0.35 lbs | 0.3 lbs | 0.3 lbs | 0.35 lbs | 0.1 lbs |
| Width | 5.32 inches | 5.3 inches | 5.25 inches | 5.3 inches | 5.3 inches |
| XMP Support | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 |
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.
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.
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.
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.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviewed on the 13 January 2018
This 2-pack was the perfect solution for upgrading our E3 cards to 1GB. The memory is stable and the performance boost was immediately noticeable.
Reviewed on the 24 March 2024
High-quality memory modules. They work seamlessly with our 31S software to provide the necessary headroom for complex routing tasks. Very satisfied.
Reviewed on the 14 June 2020
Reliable and easy to install. This pack ensures that our line cards have the memory capacity to handle modern internet routing tables without lag.
Reviewed on the 13 September 2025
Great for bulk upgrades. The modules are consistent in quality and have been running in our production environment for months without a single error.
Reviewed on the 24 February 2023
Professional grade expansion. These 512MB modules are a must-have for maintaining the performance of the 12000 series E3 cards.
SKU MEM-ISE-512A-2PK is a 1 GB route memory upgrade kit consisting of two 512 MB modules designed for a single E3 card.
The package includes two 512 MB DDR3 route memory modules configured to expand one E3 line card to 1 GB total.
This memory kit is compatible with Cisco E3 routing line cards that support a 1 GB route memory configuration.
Yes. You must be running Cisco IOS release 31S or later to enable the full functionality of the 1 GB route memory upgrade.
Power down the router, remove the E3 line card, insert the two 512 MB modules into the memory sockets, reseat the card, and power on.
Upgrading to 1 GB route memory increases route table capacity and improves convergence times for large BGP and OSPF deployments.
No. For optimal stability, all memory modules on the E3 card must match the same capacity and speed specifications.
Each module is 512 MB of DDR3 route memory, 1333 MT/s, 1.5 V operation, JEDEC-compliant, ECC-capable.
No additional license is required, but the router must run IOS 31S or higher to recognize the expanded memory.
This memory kit carries a one-year limited hardware warranty covering defects in materials and workmanship.
Standard lead time is 3–5 business days from order confirmation, depending on stock availability.
Yes. Returns are accepted within 30 days in original condition, subject to our standard return policy.
After boot, use the show platform hardware qfp active feature command to confirm the router reports 1 GB route memory.
Cisco TAC offers 24x7 technical support for installation, configuration, and troubleshooting of this memory upgrade.
Modules operate between 0 °C and 55 °C with relative humidity from 5% to 85% non-condensing per Cisco specifications.
This memory upgrade kit is available through authorized Cisco resellers and distributors worldwide.
United States
