Crucial

Crucial CT2K4G4SFS8213 8GB DDR4 2133MHz SODIMM Memory Kit

4.7 (1375 reviews)
8GB DDR4

Crucial's 8GB DDR4 SODIMM kit delivers a reliable dual-channel laptop memory upgrade at 2133MHz speeds.

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Overview

The Crucial CT2K4G4SFS8213 is an 8GB memory upgrade kit consisting of two 4GB DDR4 SODIMM modules, each rated at 2133 MT/s (PC4-17000) with a CAS latency of CL15. By using a matched pair, this kit enables dual-channel memory operation, effectively doubling the available memory bandwidth compared to running a single module alone. This can translate into noticeably smoother multitasking, faster application loading, and improved overall system responsiveness in laptops and compact systems that support dual-channel DDR4.

Built by Crucial — the consumer brand of Micron Technology, one of the world's largest memory chip manufacturers — these modules adhere to standard JEDEC specifications, meaning they operate at their rated speed and timings automatically without requiring any BIOS adjustments. The 260-pin SODIMM form factor fits laptops, many mini PCs, and all-in-one desktops that use compact memory slots. At 1.2V operating voltage, DDR4 draws less power than its DDR3 predecessor, contributing to better battery life in portable devices. While 8GB is adequate for general productivity, web browsing, and light photo editing, users with heavier demands should consider whether the total capacity and baseline 2133MHz speed meet their performance requirements before purchasing.

Key Features

Speeds start at 2133 MT/s

Increase bandwidth by up to 30%

Reduce power consumption by up to 40% and extend battery life.DDR4 PC4-17000 CL=15 Dual Ranked x8 based Unbuffered NON-ECC DDR4-2133 1.2V 2048Meg x 64

Optimized for next generation processors and platforms

x8GB Based Single Ranked Unbuffered Laptop/Notebook Memory

Specifications

Brand
Crucial
Model
CT2K4G4SFS8213
Total Capacity
8GB (2 x 4GB)
Memory Type
DDR4 SODIMM
Speed
2133 MT/s (PC4-17000)
CAS Latency
CL15
Rank
Single Ranked (SR x8)
Pin Count
260-Pin
Type
Unbuffered
Voltage
1.2V

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Pros & Cons

👍 Pros

  • Dual-channel kit provides better memory bandwidth than a single 8GB module
  • DDR4 technology offers improved power efficiency over DDR3, helping preserve laptop battery life
  • Backed by Crucial's reputation as a division of Micron, one of the largest memory manufacturers
  • Unbuffered non-ECC design ensures broad compatibility with consumer laptops and mini PCs
  • Standard JEDEC-spec operation means no manual overclocking or BIOS tweaking required

👎 Cons

  • 2133MHz is the baseline DDR4 speed, slower than higher-frequency kits available at 2400MHz or above
  • 8GB total capacity may feel limiting for heavy multitasking, video editing, or running virtual machines
  • Two 4GB modules will occupy both SODIMM slots in most laptops, leaving no room for future expansion
  • Single-ranked modules may offer slightly less performance than dual-ranked alternatives in certain workloads
  • Does not include ECC support, so it is not suitable for workstation or server applications requiring error correction

Frequently Asked Questions

The kit includes two 4GB DDR4 SODIMM modules for a total of 8GB, designed to run in dual-channel mode for improved memory bandwidth.
These are 260-pin DDR4 SODIMM modules, which are designed for laptops, mini PCs, and other compact systems that use SODIMM-form-factor memory slots supporting DDR4 at 2133MHz or higher.
No, the CT2K4G4SFS8213 is an unbuffered, non-ECC module that operates at standard JEDEC specifications. It should be recognized automatically by compatible systems without manual configuration.
The kit has a CAS latency of CL15, which is the standard latency for DDR4-2133 modules.
Crucial offers a compatibility tool on their website where you can check by entering your laptop's make and model. The kit works with any system that has two available 260-pin DDR4 SODIMM slots supporting 2133MHz.