Samsung M391B5273DH0-CK0

Overview

The Samsung M391B5273DH0-CK0 is a 4GB DDR3 ECC unbuffered memory module designed to enhance system stability and data integrity in compatible motherboards. Operating at 1600 MHz with a PC3-12800 data rate, it supports up to 12.8 GB/s bandwidth, making it well suited for entry-level servers, scientific workstations, and small business desktops that require reliable memory performance without the complexity of registered modules.

Its error-correcting code (ECC) technology detects and corrects common memory errors, reducing the risk of system crashes and data corruption. This makes it a practical choice for environments where accuracy and uptime are critical, such as file servers, financial analysis workstations, and CAD systems running extended simulations.

Key features

• ECC technology that automatically detects and corrects memory errors to maintain system stability and data accuracy
• Unbuffered design compatible with a wide range of ECC-capable motherboards, simplifying upgrades and builds
• 1600 MHz speed ensures responsive performance for routine workloads and multitasking
• 240-pin DIMM layout that fits standard DDR3 memory slots supporting ECC modules
• CAS latency of 11 balances efficient data access with overall system responsiveness

Key specs

• Memory capacity: 4 GB
• Memory type: DDR3 ECC unbuffered DIMM
• Speed: 1600 MHz (PC3-12800)
• Bandwidth: Up to 12.8 GB/s
• CAS latency: 11
• Pin count: 240-pin

Compatibility and use cases

This memory module is compatible with motherboards that support DDR3 ECC unbuffered DIMMs, commonly found in entry-level servers and professional workstations. It is a strong choice for users who need dependable memory for data-sensitive applications without the added cost or complexity of registered memory. Ideal for small business environments, scientific research setups, and CAD workstations where system reliability and data integrity are priorities.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

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After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

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