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Kingston FURY Impact 32GB (2x16GB) 5600MT/s DDR5 CL40 Laptop Memory Kit of 2 | Lower Power Consumption | Intel XMP 3.0 | Plug N Play | KF556S40IBK2-32
Kingston

Kingston FURY Impact 32GB (2x16GB) 5600MT/s DDR5 CL40 Laptop Memory Kit of 2 | Lower Power Consumption | Intel XMP 3.0 | Plug N Play | KF556S40IBK2-32

4.8(1.1K+ reviews, all variants)
upper mid$300-$599
#88 in Computer Memory
ddr
DDR5
type
DDR5
speed
5600 MHz
voltage
1.1 Volts
capacity
16 GB
compatible
Laptop
capacity gb
32GB

Want the best price and purchase timing?

Our AI advisor analyzes real-time pricing across all channels to find you the best deal.

AI Verdict

This 32GB (2x16GB) 5600MT/s DDR5 CL40 SODIMM kit is for laptop users needing a capacity upgrade and potential speed boost, provided their system supports 5600MT/s DDR5.

Situational Fit

This 32GB 5600MT/s DDR5 CL40 kit is a strong capacity upgrade for compatible laptops. Its Plug N Play and XMP 3.0 features aim for easy performance, but actual speeds and stability are highly dependent on the specific laptop's motherboard and BIOS, as some users report downclocking or compatibility issues. It's not a guaranteed maximum speed upgrade for every system.

If your system struggles to hit 5600MT/s or experiences instability, look for memory explicitly listed as compatible with your specific laptop model or consider modules with a lower JEDEC speed that your system is guaranteed to support.

Regret Score™

Medium Risk

Lower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity

27/100
vs. 242 Memory we've analyzedSafer than 69%
Hidden Defects
10/35

Issues discovered after purchase

Achilles' Heel
0/25

Critically weak dimension

Expectation Gap
8/20

Amazon rating vs actual quality

Fit Risk
9/20

Chance this product isn't for you

BuyChoice Score
3.2

Pros

  • Provides 32GB total capacity (2x16GB) for demanding laptop workloads.
  • Operates at 5600MT/s DDR5 speed, offering a performance uplift over slower modules.
  • Features Plug N Play automatic overclocking for easier setup.
  • Includes Intel XMP 3.0 certification for profile-based performance tuning.
  • Runs at 1.1 Volts, contributing to lower power consumption and increased efficiency.
  • Incorporates On-Die ECC for improved data integrity and system stability.

Cons

  • Some users report limited overclocking potential despite XMP 3.0 certification.
  • Compatibility issues have been reported with certain laptop models, leading to frustrating installation or instability.
  • Performance variability means not all systems will run the memory at its advertised 5600MT/s speed, sometimes downclocking to 4800MHz or 5200MHz.
  • May require a BIOS update on some systems to achieve optimal performance.
  • One user experienced BSODs and sleep issues with a Lenovo Legion Pro 7 when using this RAM, which resolved after reverting to original modules.

Dimension Scores

Speed & Latency7/10

The 5600MT/s DDR5 CL40 specification is a strong offering for laptop memory, though some systems may downclock it to 4800MHz or 5200MHz.

Compatibility5/10

While generally compatible with DDR5 laptops, user reports indicate specific compatibility issues and instability with certain models, preventing full speed or causing system errors.

Overclocking Headroom6/10

It features Intel XMP 3.0 and Plug N Play, but user feedback suggests limited manual overclocking potential beyond these automatic profiles.

Reliability6/10

On-Die ECC enhances data integrity, but isolated reports of BSODs and stability issues in specific laptop configurations suggest potential reliability concerns in some scenarios.

Best For

  • Laptop owners upgrading from 8GB or 16GB DDR5 for intensive multitasking and professional applications.
  • Users with compatible laptops seeking a straightforward memory upgrade via Plug N Play functionality.
  • Systems that can fully utilize 5600MT/s DDR5 speeds and benefit from Intel XMP 3.0 profiles.

Not Recommended For

  • Laptops that do not support DDR5 memory modules.
  • Users expecting significant manual overclocking beyond XMP profiles.
  • Systems with known compatibility issues with non-OEM memory, particularly Lenovo Legion models where one user reported instability.

Watch Out For

  • Some laptops, like the Lenovo LOQ 15, may automatically downclock the 5600MT/s memory to 4800MHz, negating some speed benefits.
  • A user with a Lenovo Legion Pro 7 experienced BSODs and sleep issues, with the RAM running at 5200MHz CL38 instead of 5600MT/s CL40, indicating potential instability in specific systems.
  • Performance can vary significantly depending on the laptop's system configuration, meaning the advertised 5600MT/s might not be consistently achieved.
  • A BIOS update might be necessary on some machines to ensure the memory runs at its optimal speed and stability.

Full Specifications

RAM16 GB DDR5
ASINB0BRTJ4Q94
BrandKingston
ColorBlack
SeriesKingston FURY Impact
Voltage1.1 Volts
LanguageEnglish
Batteries1 AAAA batteries required.
Hard Drive32 GB Hard disc
Item Weight0.529 ounces
ManufacturerKingston Technology Company, Inc
Memory Speed5600 MHz
Hardware PlatformStandard
Item model numberKF556S40IBK2-32
Compatible DevicesLaptop
Product Dimensions2.74 x 0.15 x 1.18 inches
Computer Memory Size16 GB
Computer Memory TypeDDR5 SDRAM
Hard Drive InterfaceeSATA
Max Screen ResolutionNo Screen Pixels
RAM Memory TechnologyDDR5
Item Dimensions LxWxH2.74 x 0.15 x 1.18 inches
Hard Drive Rotational Speed7200 RPM

What Buyers Say

Many users found this memory to be an easy and effective upgrade, especially for increasing capacity from 8GB or 16GB, noting straightforward installation and noticeable performance gains in demanding applications. However, a recurring concern is that not all laptops can fully utilize the advertised 5600MT/s speed, with some systems automatically downclocking the modules. There are also specific reports of compatibility headaches, including one user experiencing system instability and blue screens on a Lenovo Legion Pro 7, which was resolved by switching back to the original RAM.

“I popped these into my gaming laptop, and while it was super easy to install, it's not running at the full 5600MHz, which is a bummer, but the extra 32GB capacity for my video editing is still a game changer.”

Common Praise

  • Installation takes minimal time and effort.
  • Provides a significant capacity upgrade to 32GB for heavy workloads.
  • Applications launch faster and video editing feels smoother after upgrading.
  • Runs at 1.1 Volts, contributing to lower power consumption.
  • Often available at a competitive price for the performance offered.

Common Complaints

  • Some laptops automatically downclock the memory to 4800MHz or 5200MHz, not reaching the full 5600MT/s.
  • Specific compatibility issues with certain motherboards or laptop models can lead to frustrating installation or instability.
  • Limited overclocking potential, even with Intel XMP 3.0, leaving enthusiasts wanting more.
  • May require a BIOS update to achieve optimal performance and stability on some systems.
  • One user reported BSODs and sleep issues on a Lenovo Legion Pro 7 after installing this RAM.

Ownership Tips

  • The actual operating speed can be lower than 5600MT/s depending on your laptop's CPU and motherboard limitations.
  • You might need to check your laptop's BIOS settings or update the BIOS to ensure the memory runs at its highest possible stable speed.
  • Even if not running at peak 5600MT/s, the increased 32GB capacity alone can significantly improve performance for memory-intensive tasks.
  • Some users found that while XMP is present, the practical overclocking gains were minimal or non-existent.

Frequently Asked Questions

What does Plug N Play mean for this memory?

Plug N Play means the memory automatically overclocks to its highest published speed without you needing to manually adjust BIOS settings, assuming your system supports it.

Is this memory compatible with all DDR5 laptops?

While it's DDR5 SODIMM, compatibility can vary. Some users have reported issues with specific motherboards or laptops not running the memory at its full 5600MT/s speed or experiencing instability.

What is Intel XMP 3.0?

Intel XMP 3.0 (Extreme Memory Profile) allows you to select pre-defined overclocking profiles in your BIOS to achieve higher memory speeds and lower latencies, up to 6400MT/s for some modules, if your system supports it.

Will this memory improve my laptop's battery life?

Operating at 1.1 Volts, this DDR5 memory has lower power consumption compared to older DDR4 modules, which can contribute to preserving battery life in laptops.

What is On-Die ECC?

On-Die ECC (Error-Correcting Code) is a feature built directly into the memory chips that helps detect and correct internal data errors, leading to improved system stability.

Buying Guide

When buying laptop memory, you need to match the DDR generation (DDR5 for this one) and the physical size (SODIMM). The speed (MT/s) and latency (CL) are important for performance, but your laptop's CPU and motherboard ultimately dictate the maximum speed it can actually use. Don't just buy the fastest if your system can't handle it; check your laptop's specifications first.

Capacity (32GB)

This is how much data your laptop can actively work with. More capacity means you can run more applications simultaneously, handle larger files, or perform complex tasks like video editing without your system slowing down due to memory limitations.

Speed (5600MT/s)

This indicates how many millions of data transfers per second the memory can perform. A higher number means faster data access, which can make your laptop feel snappier, especially in tasks that frequently access memory, like gaming or heavy computing.

Latency (CL40)

CAS Latency (CL) is the delay, measured in clock cycles, between when the memory controller requests data and when the data is available. A lower CL number is generally better for performance, as it means less waiting time for data.

Voltage (1.1 Volts)

This is the electrical power required to operate the memory. Lower voltage, like 1.1V for DDR5, means less heat generation and lower power consumption, which is beneficial for laptop battery life and overall system cooling.

Alternatives

If this memory doesn't fit, search for DDR5 SODIMM modules with a lower speed (e.g., 4800MT/s) if your laptop officially supports only that, or look for kits specifically validated for your laptop model to ensure full compatibility and advertised speeds.

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