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Item#: 9SIA4PP1GZ2641
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Crucial M4 CT128M4SSD2 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD)

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    Top Favorable Review

    Upgrade the firmware!

    Blazingly fast - benchmark puts it at a maximum of 533Mbit/sec with the correct SATA3 drivers installed! Except for the issue noted below, I have had zero problems with this drive. Read more
    — Dylan B. 7/1/2012

    Top Critical Review

    Does not recover well from power outages

    Fails to recover from power outages. Every time (and I mean every time, 4 for 4) there is a power outage with the computer it on, the bios has trouble recognizing the SSD. I bought 2 of these for 2 different systems and both systems saw this. ... Read more
    — Bryan R. 4/18/2013

    Quick Info


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

    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

    Customer Reviews of the Crucial CT128M4SSD2

    Do you own this product? WRITE A REVIEW

    4 out of 5 eggs Based on 847 Reviews

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    • Filter Results
    • (731)
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    • (1)
    • (1)
    • JAMES D.
    • Verified Owner

    4 out of 5 eggs Still going strong after 2 years of use (crossing fingers and knocking on wood)

    Pros: It's an SSD. System speed and start up times are noticeably faster compared to more traditional, disc-based hard drives.

    I remember performing lots of research when I originally bought this SSD. At the time (mid-2012), the Crucial M4 product line had what seemed to be the least failure rates when compared to other SSD brands.

    My M4 SSD is still functioning to this day (crossing fingers and knocking on wood).

    Cons: The price. I remember paying $200-$250 for this SSD a couple of years ago. Posting this review on Newegg, I see that the price for this listing has not changed much since I bought it.

    Considering that I just recently bought another Crucial 250 GB SSD for $110 (a different product listing than this one), I consider the pricing for this specific product a serious rip-off. Thus, I am subtracting one egg.

    Bottom Line: People who are commenting about their SSD failure rates need to understand that all SSDs fail eventually. And when they fail (trust me, they will), they fail in such a way that renders the entire device useless.

    I believe SSD technology still has a long road ahead of it with regards to lifespan improvements. Those interested in making the jump to an SSD need to understand that no matter the product/brand you choose, it's very likely that the SSD will fail within a 4-year time frame. For those unwilling to accept this risk, I recommend just sticking with a traditional hard drive.

    Did you find this review helpful? Yes No

    • Greg S.
    • Verified Owner

    1 out of 5 eggs SSD Fail!

    Pros: Very fast, booted up my computer in about 10 seconds or so.

    Cons: This drive outright failed before its 2 year mark. Blue screens of death started occurring, and eventually it outright failed. Can't even boot from it anymore.

    Bottom Line: I don't recommend getting this product, nor buying anything from crucial. Their customer support is horrible, they make up "excuses" as to why they can't provide a replacement. STAY AWAY!

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

    • Jeremy C.
    • Verified Owner

    2 out of 5 eggs SSD 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.

    Bottom Line: Not a good SSD. DO not Buy!

    Did you find this review helpful? Yes No

    • Dawn G.
    • Verified Owner

    5 out of 5 eggs Super 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.

    Bottom Line: 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

    • Chris V.
    • Verified Owner

    5 out of 5 eggs Solid 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.

    Bottom Line: 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

    • Yan P.
    • Verified Owner

    5 out of 5 eggs Great 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

    Bottom Line: 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

    • Greg H.
    • Verified Owner

    2 out of 5 eggs Drive failure in 9 months

    Pros: SSD

    Cons: Failed within 9 months

    Did you find this review helpful? Yes No

    • Sean C.
    • Verified Owner

    1 out of 5 eggs SSD 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!

    Bottom Line: 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

    • Anthony D.
    • Verified Owner

    5 out of 5 eggs I 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.

    Bottom Line: 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

    • Brandon G.
    • Verified Owner

    5 out of 5 eggs Great 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!

    Bottom Line: I got one for my dad since I liked mine so much.

    Did you find this review helpful? Yes No

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    Item#: 9SIA4PP1GZ2641