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Crucial 128GB Kit (2X64GB) DDR5 RAM 5600MHz (or 5200MHz or 4800MHz) Laptop Memory Kit, SODIMM 262-Pin, Compatible with Latest Intel Core Ultra and AMD Ryzen 8000 & Above – CT2K64G56C46S5
Crucial

Crucial 128GB Kit (2X64GB) DDR5 RAM 5600MHz Laptop Memory Kit (CT2K64G56C46S5)

Status: Crucial 128GB Kit (128GB (2x64GB) DDR5 SODIMM kit): Unavailable on Amazon as of . Matched listing on eBay: $1,950.00 (open box), checked 2026-10-21 14:15 UTC. Closest in-stock match (same 128GB (2x64GB) DDR5 SODIMM): Integral 128GB, $5,372.70 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

🛒 eBay — $1,950.00 View Current Price — $5,372.70

Bottom line: The Crucial 128GB Kit DDR5 RAM 5600MHz Laptop Memory Kit: 128GB total from two 64GB SODIMMs, no second kit needed; main trade-off: 262-pin SODIMM form factor only, will not fit desktop DIMM slots.

Unavailable on Amazon as of

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Currently unavailable on Amazon. Not the same product — 2 in-stock alternatives with matching specs:

Same 128GB (2x64GB) DDR5 SODIMM: Integral 128GB — $5,372.70 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $5,372.70

Same 128GB (2x64GB) DDR5 SODIMM: G.SKILL Ripjaws DDR5 SO-DIMM Series DDR5 RAM 128GB — $4,103.99 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $4,103.99
Original listing (currently unavailable) → Compare to similar memory (ram)

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For desktop and laptop memory upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ 128GB total from two 64GB SODIMMs, no second kit needed
  • ✓ 5600MHz rated, auto-downclocks to 5200MHz or 4800MHz on slower platforms
  • ✓ Intel XMP 3.0 and AMD EXPO profiles on the same module
  • ✓ Made by Micron with component and module-level testing

Cons

  • ✗ 262-pin SODIMM form factor only, will not fit desktop DIMM slots
  • ✗ Full 5600MHz needs Intel Core Ultra, 14th Gen, or Ryzen 8000 and newer
  • ✗ Laptops with soldered memory or one slot cannot take a 2x64GB kit
  • ✗ CL46 timings (the C46 in the part number; 46-45-45 at 1.1V per Crucial’s CT2K64G56C46S5 spec page), looser than typical desktop DDR5 kits

Manufacturer description

High performance 5600MHz & high density 64GB module right out-of-the-box: Empowers your system to multitask better, load, analyze, edit, and render faster, game with higher frame rates, uncover data insights faster, enhance productivity to save time Enhanced multitasking and efficiency: 128GB kit DDR5, 5600MHz high-speed RAM improving multitasking and workflow efficiency 5600MHz that can downlock if system only supports 5200MHz or 4800MHz Seamless high-bandwidth RAM: 128GB kit DDR5 RAM compatible with latest Intel Core Ultra & 14th Gen and AMD Ryzen 8000 Series and above laptops

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SpecPicks Verdict

SpecPicks scored Crucial 128GB Kit DDR5 RAM 5600MHz Laptop Memory Kit using a rating × review-volume × price-fit model applied to published specs and reviews across the memory (ram) category. Crucial's memory (ram) lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory (ram) of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will this fit my laptop?

It needs two free 262-pin DDR5 SODIMM slots. Crucial lists compatibility with Intel Core Ultra and 14th Gen plus AMD Ryzen 8000 series and above laptops. Machines with soldered memory or a single slot cannot use a 128GB two-module kit.

What happens if my laptop only supports 4800MHz or 5200MHz DDR5?

The modules are rated at 5600MHz and downclock automatically to 5200MHz or 4800MHz to match what the system supports. No BIOS changes are required to make that happen.

Does it support XMP or EXPO?

Both. Crucial ships Intel XMP 3.0 and AMD EXPO support on the same module, so the same kit works on Intel and AMD laptops without buying a platform-specific part.

Can I install just one 64GB stick or mix it with my existing RAM?

This is sold as a matched 2x64GB kit (CT2K64G56C46S5). Running a single module works but drops you to single-channel bandwidth, and mixing these with modules from another kit is not a validated configuration.

Is it reliable, and what warranty does it carry?

Crucial DRAM is made by Micron, one of three global memory manufacturers, and gets component and module-level testing. Check the product listing for current warranty terms.

Key Features

  • High performance 5600MHz & high density 64GB module right out-of-the-box: Empowers your system to multitask better, load, analyze, edit, and render faster, game with higher frame rates, uncover data insights faster, enhance productivity to save time
  • Enhanced multitasking and efficiency: 128GB kit DDR5, 5600MHz high-speed RAM improving multitasking and workflow efficiency 5600MHz that can downlock if system only supports 5200MHz or 4800MHz
  • Seamless high-bandwidth RAM: 128GB kit DDR5 RAM compatible with latest Intel Core Ultra & 14th Gen and AMD Ryzen 8000 Series and above laptops
  • Micron quality and reliability: As one of only three global memory manufacturers, and with 45 years of memory expertise, Micron delivers cutting-edge engineering and superior component and module-level testing for all Crucial DRAM products
  • Enhanced Compatibility: Intel XMP 3.0 and AMD EXPO supported on the same RAM module

Full Specifications

Size128GB Kit (2X64GB)
BrandCrucial
ColorBlack
ModelCT2K64G56C46S5
WarrantyLimited Lifetime Warranty
UnitCount2
ReleaseDate2025-02-18T00:00:01Z
ManufacturerCrucial
ItemPartNumberCT2K64G56C46S5
Full listing titleCrucial 128GB Kit (2X64GB) DDR5 RAM 5600MHz (or 5200MHz or 4800MHz) Laptop Memory Kit, SODIMM 262-Pin, Compatible with Latest Intel Core Ultra and AMD Ryzen 8000 & Above – CT2K64G56C46S5

Ready to buy?

Amazon shows no buyable offer for Crucial 128GB Kit at the last check. The matched listing on eBay is the lowest current price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

🛒 eBay — $1,950.00

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Crucial 128GB Kit (2X64GB) DDR5 RAM 5600MHz (or 5200MHz or 4800MHz) Laptop Memory Kit, SODIMM 262-Pin, Compatible with Latest Intel Core Ultra and AMD Ryzen 8000 & Above – CT2K64G56C46S5
eBay — $1,950.00 →