Crucial

Crucial BLS4G3N18AES4 Ballistix Sport 4GB DDR3 1866 MT/s SODIMM Memory

4.4 (331 reviews)

Performance-grade DDR3 1866MHz laptop memory with XMP support for gamers and power users seeking a speed boost.

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Overview

The Crucial Ballistix Sport BLS4G3N18AES4 is a 4GB DDR3 SODIMM module built for laptop users and small form factor system owners who want more than standard memory speeds can offer. Rated at 1866 MT/s with CL10 timings (10-10-10-30), it sits above the common DDR3 1600 tier, providing a noticeable boost in responsiveness during multitasking, gaming, and data-heavy applications. The included XMP profile means that in compatible systems, reaching the rated speed is as simple as enabling the profile in the BIOS — no manual voltage or timing adjustments required.

Crucial's Ballistix Sport line is positioned as performance memory built with premium DRAM, and this module carries a limited lifetime warranty that reflects confidence in its long-term reliability. As a single 4GB stick, it is best suited as an addition to an existing module for dual-channel operation or as a replacement in systems with limited memory slots. While DDR3 is no longer the current standard, many laptops and compact PCs still rely on it, making this module a relevant upgrade path for extending the useful life of those machines.

Key Features

Performance memory for gamers and enthusiasts

XMP profile for advanced speeds and timings

Premium-quality DRAM

Limited Lifetime Warranty

Specifications

Brand
Crucial
Model
BLS4G3N18AES4
Series
Ballistix Sport
Capacity
4GB
Memory Type
DDR3
Speed
1866 MT/s (PC3-12800)
CAS Latency
CL10 (10-10-10-30)
Form Factor
204-Pin SODIMM
ECC
Non-ECC
Warranty
Limited Lifetime

Pros & Cons

👍 Pros

  • 1866 MT/s speed is faster than standard DDR3 1600, offering a measurable performance uplift in supported systems
  • CL10 latency timings provide responsive data access for gaming and multitasking
  • XMP profile simplifies overclocking setup without manual BIOS tuning
  • Backed by Crucial's limited lifetime warranty

👎 Cons

  • 4GB capacity is limiting for modern workloads and may require purchasing multiple modules
  • DDR3 SODIMM format is an older standard, incompatible with newer DDR4 or DDR5 laptops
  • Not all laptop BIOS implementations support XMP profiles, potentially limiting the module to lower speeds
  • Single module does not enable dual-channel mode on its own

Frequently Asked Questions

This is a 204-pin SODIMM designed for laptops and compact systems that support DDR3 memory. It is not compatible with desktop DIMM slots.
The module includes an XMP profile for achieving its rated 1866 MT/s speed. Your system's BIOS must support XMP for DDR3 SODIMMs to take advantage of this profile; otherwise it may default to a lower speed.
The module runs at CL10 with timings of 10-10-10-30 at its rated speed.
This is non-ECC (unbuffered) memory, which is standard for consumer laptops and desktops.