Samsung M386AAK40B40-CUC

Overview

The Samsung M386AAK40B40-CUC is a 128GB DDR4 memory module designed for server environments that require high capacity and reliable performance. Operating at 2400 Mbps, it uses load-reduced DIMM technology to support dense memory configurations, allowing up to three modules per channel without sacrificing stability or speed. This module is built to maintain efficient power consumption at 1.2 volts while delivering consistent throughput, making it well suited for data centers and enterprise servers handling large datasets or multiple virtual machines.

Key features

• Load-reduced DIMM design enables higher memory density by reducing electrical load on the memory controller
• Registered clock and control signals improve timing accuracy and system stability under heavy workloads
• Buffered data signals enhance signal integrity, ensuring reliable data transfer even in demanding server environments
• Supports up to three DIMMs per channel, allowing scalable memory capacity for growing system needs
• Efficient 1.2 V operation helps reduce power consumption and heat generation in dense server racks
• 288-pin layout and 3DS component design provide compatibility with standard server memory slots

Key specs

• Capacity: 128 GB
• Memory type: DDR4
• Data transfer rate: 2400 Mbps
• Voltage: 1.2 V
• Rank and organization: 8R x 4
• Pin count: 288 pins
• Module type: Load-reduced DIMM (LRDIMM)

Connectivity and compatibility

This memory module is designed to fit into standard 288-pin server DIMM slots and is compatible with systems that support DDR4 load-reduced DIMMs. Its architecture supports high-density memory configurations, making it a strong choice for servers that require scalable and reliable memory solutions. The registered and buffered design ensures it works well in multi-module setups without compromising signal quality or timing.

Ideal uses and environments

The Samsung M386AAK40B40-CUC is well suited to enterprise data centers, cloud computing servers, and virtualization platforms where large memory capacity and consistent performance are essential. It supports workloads that demand high uptime and responsiveness, such as database management, virtualization, and large-scale analytics. This module fits naturally in environments where memory scalability and power efficiency 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.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

Learn more

Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

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

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

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.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

Learn more