A-Tech 16GB DDR4 2666MHz CL19 260-Pin SODIMM for Samsung M471A2K43BB1-CTD Laptop RAM

16GB DDR4 2666MHz SODIMM for Laptop Upgrade

This 16GB DDR4 2666MHz SODIMM module delivers a straightforward capacity increase for compatible laptops and all-in-one systems. It operates at 1.20V with CL19 latency and uses the standard 260-pin DDR4 SO-DIMM form factor. The module is an unbuffered, non-ECC design built to replace specific Samsung part numbers including M471A2K43BB1-CTD and related variants. It targets users who need more memory for everyday multitasking without changing voltage or platform.

Sustained Load Behaviour with 2Rx8 Organisation

The module uses a 2Rx8 chip organisation that helps maintain throughput when the memory controller issues back-to-back requests over longer sessions. At 2666MHz the data rate stays consistent because the JEDEC standard voltage of 1.20V does not require elevated power draw during extended use. Unbuffered operation means the memory controller drives the bus directly, so latency remains predictable at CL19 even when the system runs near full capacity for hours. Thermal output stays within normal DDR4 limits because no extra voltage is applied.

DDR4 SO-DIMM Interface Practical Limits

The 260-pin DDR4 SO-DIMM interface caps transfer speed at the rated 2666MHz (PC4-21300) and cannot exceed that without platform support for higher JEDEC profiles. A single 16GB rank configuration fills one slot, leaving no room for a second module if the system only has one socket. Non-ECC operation means the memory controller cannot correct single-bit errors, so workloads that demand error correction must use a different module type. Compatibility depends on the laptop BIOS recognising the exact density and organisation.