9.0Our score 4 photosElevated performance for gamers & creators: 128GB kit DDR5 for enhanced productivity—accelerate demanding tasks and enjoy higher frame rates
Ranked #99 in PC Parts · 4 things we like
Quick answer The Crucial Pro 128GB Kit scores 9.0/10 with us. Amazon owners rate it 4.5 out of 5 across 167 reviews, in line with the 4.6 average of the 54 memory we track. It was listed at $1,873.45 on Amazon when we last checked in September 2026. Key facts: ram memory technology DDR5, memory speed 5600 MHz, form factor DIMM.
CP2K64G56C46U5 is the Crucial 128GB kit consisting of (2) 64GB DDR5 Pro desktop module that operates at the speed of 5600MHz and has a CAS Latency of 46. It is a UDIMM and conforms to the industry standard DDR5 UDIMM layout of 288 pins. It is compatible with systems that can take DDR5-5600 UDIMM memory.
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| RAM Memory Technology | DDR5 |
|---|---|
| Memory Speed | 5600 MHz |
| Compatible Devices | Desktop |
| Additional Features | Registered Memory |
| Voltage | 1.1 volts |
| Column Address Strobe Latency | 46 |
| Form Factor | DIMM |
| Data Transfer Rate | 5600 MHz |
| Number of Pins | 288 |
| Memory Form Factor | UDIMM |
| Memory Generation | DDR5 |
| RAM Size | 128 GB |
|---|---|
| Brand | Crucial |
| Model Name | Pro 128GB Kit DDR5 RAM 5600MHz Desktop Gaming Memory |
| Number of Items | 2 |
| Number of Packs | 2 |
| Global Trade Identification Number | 00649528944474 |
| Built-In Media | Item |
| Item Weight | 34 g |
| Model Number | CP2K64G56C46U5 |
| Mfr Part Number | CP2K64G56C46U5 |
| Warranty Description | Limited Lifetime Warranty |
Yes, it is one of the stronger picks in its group. We score the Crucial Pro 128GB Kit 9.0 out of 10. Amazon owners rate it 4.5 out of 5 across 167 reviews, in line with the 4.6 average of the 54 memory we track.
It was listed at $1,873.45 on Amazon when we last checked in September 2026. That is more than the $246.74 median for memory in our catalog. Amazon prices change daily, so use the price button on this page to see the current figure.
Amazon lists 7 options. Size: 32GB Kit (2x16GB), 64GB Kit (2x32GB), 48GB Kit (2x24GB), 96GB Kit (2x48GB), 128GB Kit (2x64GB). Style: 5600MHz, 6000MHz. Pick an option on this page and the button opens exactly that model.
RAM Memory Technology: DDR5; Memory Speed: 5600 MHz; Form Factor: DIMM; Memory Form Factor: UDIMM; RAM Size: 128 GB. All 22 specifications are in the product information table on this page.
Similar, well-rated memory in our catalog: Crucial 32GB DDR5 RAM Kit (9.6/10, 4.8 stars from 2,838 owners); Crucial Pro DDR5 RAM 32GB Kit (9.2/10, 4.6 stars from 550 owners); Crucial Pro 64GB DDR4 RAM Kit (9.4/10, 4.7 stars from 1,846 owners).
Crucial 32GB DDR5 RAM KitCrucial Pro DDR5 RAM 32GB KitCrucial Pro 64GB DDR4 RAM Kit
Alternatives to the Crucial Pro 128GB Kit
9.2[Capacity] 64GB Kit (4x16GB) UDIMM Compatible with Select Gaming Desktop PCs
8.5[Capacity] 64GB Kit (2x32GB) UDIMM Compatible with Select Gaming Desktop PCs
8.5THE RIGHT UPGRADE — 32GB (2X16GB) kit DDR5-4800 (PC5-38400), 2Rx8, 1.1V, CL40, 262-pin SODIMM. The exact memory your laptop or mini-PC needs
8.5EXACT-MATCH UPGRADE — 48GB DDR5-5600 (PC5-44800), 2Rx8 ECC SODIMM, 1.10V, CL46, 262-pin. The precise rank, voltage, and timing your system's
8.5A-Tech Memory RAM compatible for the Dell PowerEdge Server models: HS5610, HS5620, R660, R6615, R760, R760xd2, R7615, R7625, R860, XE9640
9.0A-Tech RAM Memory compatible for select DDR5 Laptop, Notebook, Mini PC, and All-in-One (AIO) Computers
8.5A-Tech RAM Memory compatible for select DDR5 Server systems; (WILL NOT WORK with Desktop Computers/PCs or Laptop Computers)
8.8Compatible with select DDR4 Desktop computers + Easy to install at home, no expertise required
9.2A-Tech 32GB RAM Kit (2 x 16GB Modules), DDR4 SO-DIMM 260-Pin, 2666MHz / 2667MHz PC4-21300 (PC4-2666V)
9.8A-Tech Velocity high performance memory engineered to enhance your gaming experience
9.4A-Tech Velocity high performance memory engineered to enhance your gaming experience
8.5Specifications: Suitable for desktops, dual-channel combination can maximize memory performance, DDR4 3200MHz PC4-25600 (some motherboards n
9.4Specifications: Laptop Memory, Dual Channel Combination Maximizes Memory Performance, DDR4 3200MHz PC4-25600 (Backward Compatible with 2666M
8.8High Speed, Low Latency: The Predator Pallas II memory is available in frequency up to 6600 MHz and latency of CL36, to avoid FPS drops and
8.9The T500 is the drive that made us stop recommending mid-range drives from other brands.
8.6The P3 Plus is for one job: a big, cheap second drive for games and media.
8.2If you edit 4K or 8K video, work with large datasets, or copy tens of gigabytes between drives daily, a Gen 5 drive pays for itself in time saved.
9.6Boosts System Performance: 32GB DDR5 RAM laptop memory kit (2x16GB) that operates at 5600MHz, 5200MHz, or 4800MHz to improve multitasking an
9.6Boosts System Performance:64GB DDR4 laptop memory RAM kit (2x32GB) that operates at 3200MHz, 2933MHz, or 2666MHz to improve multitasking and
9.4Boosts System Performance: 64GB DDR4 Pro Series desktop memory RAM kit (2x32GB) that operates at 3200MHz, 3000MHz, or 2666MHz to improve mul
9.2Game Changing Speed: 32GB DDR5 overclocking desktop RAM kit (2x16GB) that operates at a speed up to 6400MHz at CL32—designed to boost gaming