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Crucial Pro 64GB DDR5 RAM Kit (2x32GB), 5600MHz (or 5200MHz or 4800MHz) Desktop Memory UDIMM 288-pin, Compatible with 13th Gen Intel Core and AMD Ryzen 7000 - CP2K32G56C46U5
Crucial

Crucial Pro 64GB DDR5 RAM Kit (2x32GB) (CP2K32G56C46U5)

Bottom line: The Crucial Pro 64GB DDR5 RAM Kit ($1,199.99 on Amazon as of 2026-10-21 16:12 UTC): 64GB in two 32GB sticks leaves both remaining DIMM slots free for a later upgrade; main trade-off: CAS Latency 46 is loose; tuned DDR5 kits hit CL30-CL36 at the same 5600MHz.

$1199.99

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Buy on Amazon — $1,199.99 Compare to similar memory (ram)

Complete build that uses this part: How to Build a $2000 Home AI Rig in 2026: Used RTX 3090 Guide (Memory) — see the full parts list for the rest of the build.

This part is in How to Build a $2000 Home AI Rig in 2026: Used RTX 3090 Guide: $2,118.47 for 5 parts, including this part (graphics card, case not in this list — add your own), at Amazon prices checked or later (price may vary). 🛒 Add the full build (5 parts) to Amazon cart

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.

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 64GB in two 32GB sticks leaves both remaining DIMM slots free for a later upgrade
  • ✓ Auto-downclocks to 5200MHz or 4800MHz, so one kit spans several board generations
  • ✓ 1.1V operation runs cooler and draws less power than overvolted enthusiast DDR5 kits
  • ✓ Micron-made dies, tested at component and module level, not rebadged third-party chips

Cons

  • ✗ CAS Latency 46 is loose; tuned DDR5 kits hit CL30-CL36 at the same 5600MHz
  • ✗ 5600MHz is baseline JEDEC-class speed, well below 6000-8000MHz enthusiast kits
  • ✗ Non-ECC, so it will not serve workstation or server builds that require error correction
  • ✗ No heat spreader styling or RGB, which matters in a windowed show build

Manufacturer description

The Crucial Pro 64GB DDR5 kit (CP2K32G56C46U5) pairs two 32GB UDIMMs to give your desktop a large, fast memory pool without the tuning headaches of enthusiast kits. Running at 5600MHz with CAS Latency 46 on a 1.1V, 2Rx8 non-ECC design, it auto-downclocks to 5200MHz or 4800MHz so a single kit works across multiple board generations. That flexibility matters if you upgrade platforms: Crucial rates the kit for 12th and 13th Gen Intel Core and AMD Ryzen 7000 chips, with the module spec also covering Intel Core Ultra Series 2, 14th Gen Core, and Ryzen 9000 desktop CPUs. Sixty-four gigabytes is…

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SpecPicks Verdict

SpecPicks scored Crucial Pro 64GB DDR5 RAM 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 64GB kit work with my Ryzen 7000 or 13th Gen Intel build?

Yes. Crucial lists compatibility with 12th and 13th Gen Intel Core and AMD Ryzen 7000 Series desktop CPUs, and the module spec also covers Intel Core Ultra Series 2, 14th Gen Core, and Ryzen 9000. Check your motherboard's DDR5 QVL before ordering.

What speed does this actually run at out of the box?

It operates at 5600MHz, 5200MHz, or 4800MHz depending on what your platform supports, with a CAS Latency of 46. The kit downclocks automatically, so it posts on older DDR5 boards without manual BIOS tuning.

Is 64GB overkill, or will I actually use it?

It pays off in 4K video editing, large data processing, virtual machines, and heavy multitasking. For gaming alone, 32GB is usually enough; 64GB is the tier for creators and professionals who keep large projects fully in memory.

How many RAM slots does this kit use?

Two. It is a 2x32GB kit of 288-pin UDIMMs, so it fills two slots on a standard desktop DDR5 board and leaves two free on a four-slot motherboard.

Does this memory have ECC error correction?

No. The kit is non-ECC, 2Rx8 UDIMM, rated PC5-44800 at 1.1V. If your build requires ECC, you need a different Crucial line. For warranty terms, check the current product listing.

Key Features

  • Boosts System Performance: 64GB DDR5 desktop memory RAM kit (2x32GB) that operates at 5600MHz, 5200MHz or 4800MHz to improve multitasking and system responsiveness for smoother performance
  • Accelerated gaming performance: Every millisecond gained in fast-paced gameplay counts—power through heavy workloads and benefit from versatile downclocking and higher frame rates
  • Optimized DDR5 compatibility: Best for latest Intel Core Ultra series 2 & 14th Gen Core CPUs and AMD Ryzen 9000 Series desktop CPUs and above
  • Trusted Micron Quality: Backed by 42 years of memory expertise, this DDR5 RAM is rigorously tested at both component and module levels, ensuring top performance and reliability
  • ECC type = non-ECC, form factor = UDIMM, pin count = 288-pins, PC speed = PC5-44800, voltage = 1.1V, rank and configuration = 2Rx8

Full Specifications

BrandCrucial
Voltage1.1 Volts
RAM Size64 GB
Model NameCrucial Pro DDR5 5600 MHz DRAM
Unit Count1.0 Ounce
Form FactorDIMM
Memory Speed5600 MHz
Model NumberCP2K32G56C46U5
CompatibilityPC
Built-In MediaItem
Number of Pins288
Mfr Part NumberCP2K32G56C46U5
Memory GenerationDDR5
Compatible DevicesDesktop
Data Transfer Rate5600 MHz
Memory Form FactorUDIMM
Additional FeaturesRegistered Memory
Computer Memory Size64 GB
Warranty DescriptionLimited Lifetime Warranty
RAM Memory TechnologyDDR5
Full listing titleCrucial Pro 64GB DDR5 RAM Kit (2x32GB), 5600MHz (or 5200MHz or 4800MHz) Desktop Memory UDIMM 288-pin, Compatible with 13th Gen Intel Core and AMD Ryzen 7000 - CP2K32G56C46U5

Ready to buy?

Crucial Pro 64GB DDR5 RAM Kit (2x32GB), 5600MHz (or 5200MHz or 4800MHz) Desktop Memory UDIMM 288-pin, Compatible with 13th Gen Intel Core and AMD Ryzen 7000 - CP2K32G56C46U5 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $1,199.99

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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Crucial Pro 64GB DDR5 RAM Kit (2x32GB), 5600MHz (or 5200MHz or 4800MHz) Desktop Memory UDIMM 288-pin, Compatible with 13th Gen Intel Core and AMD Ryzen 7000 - CP2K32G56C46U5
$1,199.99
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