Site updated: 29.9.16

Excellent service, excellent product

I wanted a fast, fanless PC for heavy photo editing use and went for the Serenity Pixelstation. Great advice over the phone... Words, 31st August 2016 (via Trustpilot)
512GB SATA 3.0 SSD M4, CT512M4SSD2
256GB SATA 3.0 SSD M4, CT256M4SSD2
128GB SATA 3.0 SSD M4, CT128M4SSD2
64GB SATA 6Gb/s SSD M4

Crucial SATA 6Gbs M4 Solid State Drives

- Replaces the Crucial RealSSD C300 2.5-inch SATA 6Gb/s

Want to go faster? Then the new Crucial M4 SSDs are definitely what you should install your next OS on!

The Crucial M4 SSD builds on the success of our award-winning, wildly popular Crucial RealSSD C300 solid-state drive by offering mobile and desktop users scorching-fast read and write speeds, groundbreaking SATA SSD computing, and unparalleled performance for the dollar.


  1. Ground breaking SATA SSD performance
  2. Second-generation SATA 6Gb/s w/ Native Command Queuing
  3. No moving parts, therefore silent
  4. Rugged and reliable operation in even the most demanding operating environments
  5. Read speeds up to 500MB/s *
  6. Read speeds up to 415MB/s †
  • *CT128M4SSD2, CT256M4SSD2, CT512M4SSD2 only
  • CT64M4SSD2 only

Designed for client computing, the Crucial M4 SSD delivers faster boot and application load times for mobile and desktop users alike. Low power, lightweight, and durable, it empowers high-speed synchronous MLC NAND, advanced controller technology, optimised NAND management, and the second-generation SATA 6Gb/s interface. Together, that technology dramatically improves data transfers for bandwidth-demanding applications.

Delivering on the highest quality based upon Micron's leading-edge NAND media, the Crucial brand of memory has long been synonymous with reliability and high-performance. Their expertise in NAND process technology enables us to optimise the performance and durability of Crucial solid-state drives.

Unformatted capacity128GB 256GB 512GB 64GB
Approx. formatted capacity120GB 238GB 480GB 60GB
ControllerIntegrated 8-channel single chip
FirmwareField Upgradeable
RAID SupportYes
Transfer Rate6Gb/sec (compatible 3Gb/sec)
2.5-inch SSD Power Supply5 V
CertificationsFCC, CE, RoHS, UL
Command SetATA-8 ACS2 command set compliant
MonitoringSelf-monitoring, analysis, and reporting technology (SMART) command set
Average Access Time< 0.1 ms
Sequential Read (up to)500 MB/sec (SATA 6Gb/s) 415 MB/sec (SATA 6Gb/s)
Sequential Write (up to)175 MB/sec (SATA 6Gb/s) 260 MB/sec (SATA 6Gb/s) 100 MB/sec (SATA 6Gb/s)
Random 4k READ40,000 IOPS
Random 4k WRITE20,000 IOPS
PCMark Vantage55K HDD test score
Dimensions100.5 x 69.85 x 9.50 mm
Active Average Power150 mW
Idle Average Power<65 mW
Operating Temperature0°C to 70°C
Non-Operating Temperature-40°C to 85°C
Shock Resistance1500G / 1.0ms
Vibration Resistance2-500Hz at 3.1G
MTBF21.2 Million Hours
Data ReliabilityBuilt-in EDC/ECC
Warranty24 months
EAN barcode0649528752185 0649528752659 0649528752208 0649528752178

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Brawby Grange
YO17 6PZ
United Kingdom

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