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Deal.ai › Kingston
Kingston
Kingston FURY Impact 8GB DDR5-5600 SODIMM (KF556S40IB-8)

Kingston FURY Impact 8GB DDR5-5600 SODIMM (KF556S40IB-8)

Best price now

$784.16at Grooves-Inc.comChecked 1 h ago

Compared across 12 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $784.16 at Grooves-Inc.com (checked Nov 14, 2026).
  • Checked at 12 stores.

Our take on the Kingston FURY Impact 8GB DDR5-5600 SODIMM (KF556S40IB-8)

The Kingston FURY Impact is a single DDR5-5600 SODIMM for laptops and small-form-factor PCs that take full-size SO-DIMM slots. It runs at 5600 MT/s with a CAS latency of 40 and carries on-module ECC, so it can correct single-bit errors on supported platforms. It is a plug-and-play upgrade: no heatsink and no tuning needed, and it falls back to the platform's base speed if the laptop can't hold 5600. Against slower DDR5-4800 modules it gives more bandwidth for integrated graphics and memory-hungry apps; against DDR4 SO-DIMMs it is a different slot and won't fit older laptops.

Best forLaptop owners upgrading from DDR5-4800Mini PC and NUC buildersIntegrated-graphics gaming on a laptopAdding memory to a DDR5 SO-DIMM slot
Pros
  • 5600 MT/s at CL40, faster than baseline DDR5-4800
  • On-module ECC for error correction on supported platforms
  • Low-profile bare module fits tight laptop chassis
  • Plug-and-play JEDEC profile, no tuning required
  • Kingston lifetime warranty
Cons
  • Single stick only runs in single-channel until paired
  • Won't fit DDR4 or soldered-memory laptops
  • Laptops capped below 5600 run it at a lower speed
  • No heatsink, so sustained loads run warmer

Kingston FURY Impact 8GB DDR5-5600 SODIMM (KF556S40IB-8) prices at every store

  • Grooves-Inc.comNew

    In stock

    $784.16+ $9.35 shippingChecked 1 h ago
    Visit Grooves-Inc.com
  • Compu DevicesNew

    In stock

    $794.52Free shippingChecked 1 h ago
    Visit Compu Devices
  • NextWarehouse.comNew

    In stock

    $816.68+ $12.99 shippingChecked 1 h ago
    Visit NextWarehouse.com
  • eBayNew

    In stockSold by memoryc_deals

    $889.52Free shippingChecked 1 h ago
    Visit eBay
  • MemoryC.comNew

    In stock

    $889.52Free shippingChecked 1 h ago
    Visit MemoryC.com
  • Newegg.comNew

    In stockSold by Nexbyte

    $1,368.38Free shippingChecked 1 h ago
    Visit Newegg.com
  • eBayOpen box

    Availability unknownSold by smartech-tx (99.9% positive, 746 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $455.85+ $11.24 shippingChecked 1 h ago
    Visit eBay
  • PondeskNew

    Availability unknown

    $884.99Checked 1 h ago
    Visit Pondesk
  • PCNationNew

    Out of stock

    $670.02Free shippingChecked 1 h ago
    Visit PCNation
  • eSaitechNew

    Out of stock

    $699.00Free shippingChecked 1 h ago
    Visit eSaitech
  • Consolidated ComputersNew

    Out of stock

    $771.87Free shippingChecked 1 h ago
    Visit Consolidated Computers
  • WalmartNew

    Out of stockSold by IPC Store

    $839.12Free shippingChecked 1 h ago
    Visit Walmart

Store links may earn us a commission.

Kingston FURY Impact 8GB DDR5-5600 SODIMM (KF556S40IB-8) price history

Lowest price we've seen: $670.02 on Nov 14 at PCNation. Tracked across 11 stores since Nov 14.

What reviewers say

Owners of DDR5 laptops and mini PCs report the module installs easily and runs at its rated speed on compatible machines. Most praise the stability and the value of a straightforward capacity boost; complaints center on laptops that downclock it and on buying one stick instead of a matched pair.

What people mention
  • SpeedPraisedOwners say it hits 5600 MT/s on laptops that support it and feels snappier than the DDR5-4800 it replaced.
  • StabilityPraisedBuyers report no crashes or boot problems after installing it.
  • CompatibilityMixedWorks well on DDR5 SO-DIMM machines, but some buyers found their laptop capped the speed lower.
  • Single-channelCriticisedBuyers note one stick runs single-channel, so a matched pair is better for graphics performance.
  • BuildMixedThe bare low-profile module fits tight chassis, though some expected a heatsink.

About the Kingston FURY Impact 8GB DDR5-5600 SODIMM (KF556S40IB-8)

It runs at 5,600 MHz and uses unbuffered signal processing. It is sold as a single module.

Brand
Kingston
Model
KF556S40IB-8
Memory type
DDR5 SODIMM
Speed
5,600 MHz (DDR5-5600)
Signal processing
Unbuffered
Modules
One

Specifications

Type
DDR
ECC
Yes
Signal Processing
Unbuffered
Number Of Sticks
One
Capacity
32 GB
Speed
5,600 MHz

Questions and answers

Will this fit my laptop?
Only if your laptop has a DDR5 SO-DIMM slot. It will not fit DDR4 slots or laptops with soldered memory, so check the spec sheet first.
Does it run at 5600 MT/s?
It is rated for 5600 MT/s at CL40, but the laptop's memory controller sets the final speed. Machines capped lower will run it slower.
Should I buy one stick or two?
Two matched sticks run in dual-channel and give better integrated-graphics performance. One stick is fine if you only have a single free slot.
What does the on-module ECC do?
It corrects single-bit errors on platforms that support it, which helps stability. It is not the same as registered server ECC memory.
Is it worth it over DDR5-4800?
Yes if your laptop supports 5600, since you get more bandwidth for the same slot. If it is capped at 4800, the gain is smaller.
Where is the Kingston FURY Impact 8GB DDR5-5600 SODIMM (KF556S40IB-8) cheapest?
At Grooves-Inc.com, for $784.16, as of our latest check.
Where can I buy the Kingston FURY Impact 8GB DDR5-5600 SODIMM (KF556S40IB-8)?
11 stores we checked sell it, including eBay, PCNation, eSaitech, Consolidated Computers, Grooves-Inc.com.

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Stores we've priced the Kingston FURY Impact 8GB DDR5-5600 SODIMM (KF556S40IB-8) at

  • eSaitech deals and prices
  • Newegg deals and prices
  • Pondesk deals and prices
  • Walmart deals and prices

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