Crucial CT2K8G4SFD8213 16GB DDR4 2133MHz SODIMM Kit — main product image

Crucial CT2K8G4SFD8213 16GB DDR4 2133MHz SODIMM Kit

Crucial

Crucial CT2K8G4SFD8213 16GB DDR4 2133MHz SODIMM Kit

Name: Crucial CT2K8G4SFD8213 16GB DDR4 2133MHz SODIMM Kit
Brand: Crucial
SKU: CT2K8G4SFD8213

16GB DDR4

Dual-channel DDR4-2133 SODIMM kit doubles your notebook's memory bandwidth while cutting power draw by up to 40% versus DDR3.

$139.70*

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*Price sourced from Amazon.com. Last updated:Sep 07, 2026.Price and availability are subject to change — details.

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Overview

The Crucial CT2K8G4SFD8213 is a 16GB DDR4 SODIMM kit composed of two 8GB modules running at 2133 MT/s (PC4-17000) with CL15 timing at 1.2V — the JEDEC baseline specification for DDR4. What those numbers mean in context: DDR4 at 2133 MT/s delivers a peak theoretical bandwidth of approximately 17 GB/s per channel; in dual-channel configuration, the effective bandwidth approaches 34 GB/s, which is roughly double what a single-module installation achieves. The 1.2V operating voltage versus DDR3's 1.35–1.5V is the source of the claimed 40% power reduction, a meaningful delta in notebooks where memory is under sustained load during complex tasks. The 260-pin SODIMM form factor is the standard interface for notebooks, mini-PCs, and all-in-ones — not desktop DIMMs.

This kit is built for notebook users who need a straightforward, validated capacity and bandwidth upgrade without platform-specific tuning. It addresses two distinct bottlenecks simultaneously: capacity limits that force the OS to swap to disk under multitasking loads, and single-channel bandwidth constraints that starve integrated graphics (which share system memory) of throughput. The upgrade is particularly impactful on systems with integrated Intel or AMD APU graphics, where moving from single-channel to dual-channel can improve graphics performance by 10–30% in GPU-limited scenarios. For professionals running productivity suites, developers with large codebases and VMs, or students juggling research tools and browser-heavy workflows, the 16GB dual-channel configuration represents the most efficient single upgrade available in a DDR4 SODIMM platform.

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

optimized for next generation processors and platforms..x8GB Based Dual Ranked Unbuffered Laptop/Notebook Memory

Form factor:SODIMM

Specifications

Capacity

16GB Kit (2 × 8GB)

Memory Type

DDR4 SODIMM

Speed

2133 MT/s (PC4-17000)

Latency

CL15

Voltage

1.2V

Pin Count

260-pin

Module Type

Unbuffered (Unregistered)

Module Configuration

x8, Dual Ranked

Form Factor

SODIMM (laptop/notebook)

Warranty

Limited Lifetime

Frequently Asked Questions

Will this kit work in my laptop — how do I verify compatibility before purchasing?

The CT2K8G4SFD8213 is a 260-pin DDR4 SODIMM kit operating at 2133 MT/s (PC4-17000). It is compatible with laptops and notebooks that support DDR4 SO-DIMM in their memory slots. Use Crucial's System Scanner tool or check your laptop's service manual to confirm DDR4 SODIMM support, available slot count, and maximum supported capacity. Do not install DDR4 in a DDR3 system — the notch positions are physically different and incompatible.

What performance improvement should I expect after installing this 16GB kit compared to 8GB single-channel?

The gains come from two directions. First, doubling capacity from 8GB to 16GB eliminates the paging/swapping that throttles performance when RAM fills up — multitasking with multiple browser tabs, productivity apps, and background processes becomes materially smoother. Second, running two matched 8GB modules in dual-channel mode doubles the memory bus effective bandwidth versus a single stick, which measurably reduces latency in memory-bound operations. Crucial quantifies this as up to 30% bandwidth increase.

Is 2133 MT/s (PC4-17000) the maximum this kit will run, or will it clock higher if the platform supports XMP/higher JEDEC profiles?

This kit is rated and certified at 2133 MT/s — it does not include XMP profiles for higher clock speeds. If your system's memory controller supports faster DDR4 speeds (e.g., 2400 or 2666 MT/s), the modules will default to 2133 MT/s per JEDEC specification. For users who need higher-frequency RAM, Crucial and other manufacturers offer kits rated at 2400, 2666, and beyond for compatible platforms.

What does CL15 latency mean, and does it matter at 2133 MT/s?

CL15 (CAS Latency 15) means the module waits 15 clock cycles before responding to a read command. At 2133 MT/s, one clock cycle is approximately 0.94 ns, putting the absolute latency at roughly 14 ns — a standard figure for DDR4-2133. For everyday productivity and multitasking workloads, this latency is not a practical bottleneck. It only becomes relevant in latency-sensitive workloads like competitive gaming or certain scientific simulations, where tighter-latency kits at the same speed can show measurable advantages.

Is this kit safe to install without voiding a laptop warranty?

RAM is user-replaceable in most laptops and is explicitly listed as a customer-installable part by most major OEMs (Dell, Lenovo, HP). However, some ultra-thin laptops solder RAM directly — verify your specific model has accessible SODIMM slots before purchasing. Crucial offers a limited lifetime warranty on this kit, covering defects in materials and workmanship.

Strengths & Trade-offs

👍 Pros

The dual-channel configuration — two matched 8GB modules — delivers up to 30% greater memory bandwidth versus a single-stick installation of equivalent capacity.
DDR4 SODIMM technology reduces power consumption by up to 40% compared to DDR3 equivalents, which translates to measurable notebook battery life improvement under memory-intensive workloads.
The 2133 MT/s speed meets JEDEC standard certification, ensuring stable operation across the broadest range of DDR4-compatible platforms without requiring BIOS tuning.
At 2×8GB, the kit fills both SODIMM slots simultaneously and maximizes dual-channel throughput on platforms with only two available memory channels.
Crucial's limited lifetime warranty on the modules provides long-term defect coverage that single-purchase OEM RAM upgrades rarely include.

👎 Cons

The 2133 MT/s speed is the entry-level DDR4 frequency — users with platforms supporting 2400, 2666, or 3200 MT/s will leave bandwidth on the table, as this kit will not auto-overclock beyond its rated speed.
CL15 timing is standard but not aggressive — tighter-latency DDR4-2133 kits (CL13 or CL14) are available at similar prices and offer marginally lower absolute latency for latency-sensitive workloads.
At 16GB total, this kit fills both SODIMM slots, leaving no upgrade path without replacing both modules — users who anticipate needing 32GB later must purchase a new kit outright.
Compatibility is limited to platforms with 260-pin DDR4 SODIMM slots — users with DDR3, LPDDR3, LPDDR4, or soldered RAM configurations cannot install this kit.
No XMP or overclocking profile is included, which limits advanced users who want to push memory clocks above rated speed on platforms that support it.

Crucial CT2K8G4SFD8213 16GB DDR4 2133MHz SODIMM Kit

Overview

Key Features

Specifications

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