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Deal.ai › Crucial › Memory Upgrades
Crucial
Crucial 128GB (2 x 64GB) 262-Pin DDR5 SO-DIMM DDR5 5600 (PC5 44800) Laptop Memory

Crucial 128GB (2 x 64GB) 262-Pin DDR5 SO-DIMM DDR5 5600 (PC5 44800) Laptop Memory

5(1 rating)

Best price now

$2,199.00at Best BuyChecked 1 h ago

15% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Lowest price today: $2,199.00 at Best Buy (checked Nov 14, 2026).
  • Checked at 3 stores.

Our take on the Crucial 128GB (2 x 64GB) 262-Pin DDR5 SO-DIMM DDR5 5600 (PC5 44800) Laptop Memory

This is a two-module laptop memory kit from Crucial, 64GB per module, in the 262-pin DDR5 SO-DIMM form factor running at 5600 MT/s (PC5-44800). It is aimed at people who run heavy workloads on a laptop: virtual machines, large datasets, video editing, or many browser tabs at once. The appeal is capacity and Crucial's long record in memory compatibility, not flashy features. Rivals at this speed include Corsair, Kingston Fury and Samsung modules, which generally match the same JEDEC timings; the real differences are capacity per stick, heatsink design and how well the kit is validated for your machine.

Best forLaptop owners running virtual machines or large datasetsVideo and photo editors working with big filesPower users who keep dozens of apps openBuyers upgrading a DDR5 laptop that supports 64GB modules
Pros
  • 128GB total gives headroom no single 32GB or 64GB stick can match
  • 5600 MT/s DDR5 speed suits current 12th–14th gen and Ryzen 7000+ laptops
  • Standard 262-pin SO-DIMM fits most DDR5 laptop slots
  • Crucial publishes compatibility guidance by laptop model
  • Simple install: two modules, no tools beyond a screwdriver
Cons
  • Not every DDR5 laptop accepts 64GB modules; check your model's maximum first
  • No RGB or heatsink, so it looks plain next to gaming-branded kits
  • Laptop BIOS may downclock the kit below 5600 MT/s
  • Two sticks use both slots, so no room for later expansion
  • High-capacity kits can be harder to return once opened

Crucial 128GB (2 x 64GB) 262-Pin DDR5 SO-DIMM DDR5 5600 (PC5 44800) Laptop Memory prices at every store

  • Best BuyNew

    In stock

    $2,199.00Free shippingChecked 1 h ago
    Visit Best Buy
  • WalmartNew

    In stockSold by REAL DEALZ LLCReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $2,599.99Free shippingChecked 1 h ago
    Visit Walmart
  • NeweggNew

    In stock

    $2,697.00Free shippingChecked 1 h ago
    Visit Newegg

Store links may earn us a commission. Some prices via Klarna.

Crucial 128GB (2 x 64GB) 262-Pin DDR5 SO-DIMM DDR5 5600 (PC5 44800) Laptop Memory price history

Lowest price we've seen: $2,199.00 on Nov 14 at Best Buy. Tracked across 2 stores since Nov 14.

What reviewers say

Owner feedback on Crucial DDR5 SO-DIMM kits is generally positive, with buyers reporting drop-in installs and stable operation at rated speed in compatible laptops. Complaints center on laptops that refuse to boot or run slower than 5600 MT/s, usually because the machine's maximum capacity or BIOS support falls short.

What people mention
  • CompatibilityMixedBuyers say it works perfectly in supported laptops but fails to boot in models with lower maximum capacity.
  • SpeedMixedMany report full 5600 MT/s operation, while others see the kit run at 4800 MT/s in older platforms.
  • StabilityPraisedOwners describe long sessions with virtual machines and large files without crashes.
  • InstallPraisedReviewers call the swap straightforward, with modules recognized on first boot.
  • HeatCriticisedA few note the bare modules run warm in slim laptops under load.

About the Crucial 128GB (2 x 64GB) 262-Pin DDR5 SO-DIMM DDR5 5600 (PC5 44800) Laptop Memory

This Crucial memory kit adds 128GB of DDR5 to a laptop. It includes two 64GB modules in the 262-pin SO-DIMM form factor.

The modules run at 5600 MHz (PC5-44800). The model number is CT2K64G56C46S5.

Brand
Crucial
Model
CT2K64G56C46S5
Total capacity
128GB (2 x 64GB)
Type
DDR5 SO-DIMM
Pins
262-pin
Speed
5600 MHz (PC5-44800)
Use
Laptops

Specifications

Memory Capacity
64 GB, 128 GBSource
Type
SO-DIMM DDR5, DDR5Source
Color
Green, BlackSource
Area of Use
For LaptopsSource

Questions and answers

Will this kit work in my laptop?
Only if your laptop supports 64GB per SO-DIMM slot and DDR5 memory. Check the manufacturer's maximum memory spec before buying; many DDR5 laptops top out at 64GB total.
Does it run at 5600 MT/s?
It is rated for 5600 MT/s, but the laptop's BIOS and CPU determine the actual speed. Some platforms run it at 4800 MT/s.
Is 128GB overkill?
For everyday use, yes. It makes sense for virtual machines, large datasets, 8K video or heavy multitasking where 32GB or 64GB runs out.
Can I add this to my existing memory?
It is a matched two-module kit that fills both slots. Mixing it with other modules risks instability, so use it as a full replacement.
What is in the box?
Two 64GB DDR5 SO-DIMM modules. No tools or heatsinks are included.
Does it need a heatsink?
No. SO-DIMMs run without one, though thin laptops can get warm under sustained load.
Where is the Crucial 128GB (2 x 64GB) 262-Pin DDR5 SO-DIMM DDR5 5600 (PC5 44800) Laptop Memory cheapest?
At Best Buy, for $2,199.00, 15% under what the other stores charge, as of our latest check.
What do buyers say about the Crucial 128GB (2 x 64GB) 262-Pin DDR5 SO-DIMM DDR5 5600 (PC5 44800) Laptop Memory?
Rated 5 out of 5 from 1 ratings.
Where can I buy the Crucial 128GB (2 x 64GB) 262-Pin DDR5 SO-DIMM DDR5 5600 (PC5 44800) Laptop Memory?
3 stores we checked sell it, including Best Buy, Newegg, Walmart.

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Stores we've priced the Crucial 128GB (2 x 64GB) 262-Pin DDR5 SO-DIMM DDR5 5600 (PC5 44800) Laptop Memory at

  • Best Buy deals and prices
  • Newegg deals and prices

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