Home > Reviews > Crucial M4 256GB SSD Review
ReviewsSolid State Drives

Crucial M4 256GB SSD Review

The Crucial M4, which made its debut almost 2 years ago, is one of the most popular drives in the market. Is it still a top contender?

SSDs are getting more and more appealing by the day. Already nowadays their retail pricing is affordable for most home users and gamers who only require capacities up to 256GB for their primary HDD. Crucial is one of the most active players in the SSD market, which is only natural as the company's focus is on memory-related products, usually those designed and produced by Micron, as Crucial actually is their subsidiary. In this review we will examine the 256GB version of the M4, currently the fastest 2.5" drive offered by Crucial, based on a well-renowned Marvell controller. We should also note that the M4 has been available for nearly two years now, which makes it the longest living SSD model in history up to this date.

Manufacturer features and specifications


  • Integrated 8-channel single chip Controller
  • Self-monitoring, analysis, and reporting technology (SMART) command set
  • RAID Support
  • Average Access Time < 0.1 ms
  • Data Reliability: Built-in EDC/ECC


  • Power Consumption (Idle): < 65 mW
  • Power Consumption (Active): 0.15W
  • Operating Temperature: 0°C ~ +70°C
  • Storage Temperature: -40°C ~ +85°C
  • Max Shock Resistance: 1500G


Form Factor


Memory Components


Sustained Sequential Read

Up to 500 MB/s (SATA 6Gb/s)

Sustained Sequential Write

Up to 260 MB/s (SATA 6Gb/s)

4KB Random Read

Up to 45K IOPS

4KB Random Write

Up to 50K IOPS










1,200,000 hours


Leave a Reply

Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Read previous post:
Mars once suitable for life says NASA

Just prior to having to put the Mars rover Curiosity into a slumber mode due to a bad software upgrade,...