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Item#: N82E16820148442

Crucial M4 CT128M4SSD2 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD)


  • 2.5"
  • 128GB
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Hungry for more? The new m4 SSD built on the success of the award-winning, wildly popular Crucial RealSSD C300 solid-state drive offers mobile and desktop users scorching-fast read and write speeds, groundbreaking SATA SSD computing, and unparalleled performance for the dollar.

The Crucial m4 incorporates Micron's industry-leading 25nm NAND flash technology in a 2.5" form factor. It also supports the SATA 6Gb/s interface, opening up the data path between the host processor and the SSD, and resulting in improved overall system responsiveness, including faster boot times and application loads. The Crucial m4 SSD reaches read speeds of up to 415 MB/s, a 17% increase over its predecessor. Ideal for client computing, Crucial m4 SSD provides benefits for notebooks, desktops, workstations, and industrial applications, including low power consumption, lightweight construction, and resistance to shock and vibration.


  • newegg Speed Demon Continuing the tradition of the award-winning RealSSD C300 solid-state drives, the Crucial m4 offers mobile and desktop users unparalleled read and write performance at its price range, including up to 415MB/s Sequential Read, up to 175MB/s Sequential Write and 35K IOPS for Random 4k Read (128GB @ SATA 6Gb/s, measured using Iometer with a queue depth of 32 and write cache enabled).
  • newegg Latest and Greatest 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, optimized NAND management, and the second-generation SATA 6Gb/s interface. Together, that technology dramatically improves data transfers for bandwidth demanding applications.
  • newegg Memory Experts Delivering on the highest quality based upon Micron’s leading-edge NAND media, the Crucial brand of SSDs has long been synonymous with reliability and high performance. And because Crucial is part of Micron, the m4 was bred and built entirely in-house. So you can rest assured you’ll get one of the highest quality products available—from the company that knows memory.
  • newegg SSD Advantages SSDs provide many benefits over traditional hard drives. You’ll enjoy reduced power consumption, less heat generation. Because they have no moving parts, SSDs are quiet, more lightweight, and they’re rugged and reliable even in the most demanding operating environments or temperature extremes.

Learn more about the Crucial CT128M4SSD2


Device Type
Internal Solid State Drive (SSD)
Used For


Form Factor
Memory Components


Sustained Sequential Read
Up to 500MBps (SATA 6Gbs); 265MBps (SATA 3Gbs)

Sustained Sequential Write
Up to 175MBps (SATA 6Gbps)
4KB Random Read
Up to 45,000 IOPS
4KB Random Write
Up to 35,000 IOPS
1,200,000 hours


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)
< 85 mW
Power Consumption (Active)
Operating Temperature
0°C ~ +70°C
Storage Temperature
-40°C ~ +85°C
Max Shock Resistance

Manufacturer Warranty

3 years limited
3 years limited

Quick Info


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years

Customer Reviews of the Crucial CT128M4SSD2

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  • Jeremy C.
  • 11/18/2014 6:34:28 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsSSD Not being recognized in Bios

Pros: Low price, fast.

Cons: This SSD has only lasted me a little over a year before it started to fail. Speed tests in windows index factor have decreased 2 points over the last year. It also will not load in bios more often.

Other Thoughts: Not a good SSD. DO not Buy!

Did you find this review helpful? Yes No

  • Prime
  • 10/20/2014 6:02:08 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsSuper fast, super sweet...Nuff Said!

Pros: Super fast. Never have had a problem with this drive.

Cons: Little small to load all my to pick and choose what games to load.

Other Thoughts: Obviously go for the larger one now, but when I bought this they were a bit high priced.

Did you find this review helpful? Yes No

  • Anonymous
  • 10/10/2014 12:34:54 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsSolid after almost 3 years of daily use.

Pros: I just bench marked this drive a few days ago with CrystalDiskMark and its read/write speeds are still as advertised. This is after almost 3 years of daily use. Firmware upgrades were always painless. If you buy one now it should come with the latest firmware.

Cons: None.

Other Thoughts: Obviously buy one of the new newer M500's or MX100's now. Great alternative to Samsung Evo.

Did you find this review helpful? Yes No

  • pesok
  • 9/8/2014 9:44:31 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat SSD - no problems in over 3 years of onwership

Pros: Fast and reliable - what else could one ask for in SSD?

Cons: smallish size now

Other Thoughts: Been using this SSD for over 3 years now of daily use and as a main OS drive. Have upgraded firmware couple of times(painless process and didnt even have to reinstall OS ) and it never gave me any problems while always being as fast as they get pretty much. It was my first SSD and since then i have purchased over 10 different SSD(once you go SSD its very hard to go back to HDD of even hybrids for anything but pure storage needs) and while some were faster i still use this one as my OS drive in my main desktop. Will be buying larger size(since 128Gb is kind of limiting nowdays) M4 when prices drop a bit lower.
Nothing but good for this little speedracer!

Did you find this review helpful? Yes No

  • N/A
  • 8/19/2014 9:46:46 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsDrive failure in 9 months

Pros: SSD

Cons: Failed within 9 months

Did you find this review helpful? Yes No

  • Sean
  • 8/9/2014 8:15:16 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsSSD Fail!

Pros: It's an SSD.

Cons: This drive worked for while before giving me issues. I read that my mobo might not support SSD as it was an older system. Went back to my RAID0 x 3 and put the M4 off to the side and forgot about it as I could live without it.

It's been a year and I have a new system as a home server. I can now verify it's a bad drive. It has the latest firmware and has this disconnect issue. Programs stop responding before Windows itself crashes. After the reboot the M4 isn't even listed in the bios. I have to cycle power, set it as a boot device again, and I'm up until it happens again. All drivers, bios, and SSD firmware up to date.

I wish I RMA'd or got a refund. It was expensive then. An unreliable drive is as useful as War.
singing - What is it good for? Absolutely nothing, oh hoh, oh!

Other Thoughts: Don't take my word for it. A little searching and you'll see this is quite common with this drive.

1 out of 1 people found this review helpful. Did you? Yes No

  • N/A
  • 5/1/2014 6:56:22 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsI take back my other review

Pros: So my previous review from two days ago can be taken down (I don't know how to edit reviews, if that's even possible) - I should have done some homework on this drive to realize that I had the very first firmware version on this hard drive. After being on the phone with tech support, who are awesome at Crucial by the way, I was able to update my SSD to the latest firmware and get everything running again. This drive is so much faster than the platter drive I was using in the mean-time.

Cons: Updating the firmware was a bit time consuming with the BIOS resets and all, but not really a 'con,' just something you have to do to ensure proper functionality.

Other Thoughts: Make sure to update the firmware when you get this if it's not at the latest firmware already, you should have no problems. I've had this drive for over two years now, if I get two more problem free years I'll be happy.

Did you find this review helpful? Yes No

  • Brando56894
  • 4/29/2014 9:13:33 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat Drive

Pros: Fast and cheap! Before this drive I went through 4 OCZ drives, it's pretty bad when the replacements for the original products die too!

Cons: None!

Other Thoughts: I got one for my dad since I liked mine so much.

Did you find this review helpful? Yes No

  • N/A
  • 4/29/2014 7:17:33 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsWorks great, for a while

Pros: When this drive was brand new and it was my first SSD, I couldn't believe how fast my computer would run. This this is an amazing drive for keeping your OS and main programs on.

Cons: I have had this drive for two years and two months, and just like Robert S. I was having BSOD's and a bunch of odd windows problems and resets. I had a spare hard drive lying around which I installed Windows on again, and now my computer has no problems at all.

Other Thoughts: The warranty period for this drive is three years, I am going to try and contact Crucial when I get home and get this warranty process started. I will update this review when I find out how difficult or easy it is to get a replacement drive.

Did you find this review helpful? Yes No

  • N/A
  • 3/16/2014 6:26:19 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat SSD

Pros: Bought this card over a year ago, I have not had any issues what so ever with it. Great Speed

Cons: None at all

Other Thoughts: Want to buy another!

Did you find this review helpful? Yes No

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