features :
- Powerful SSD performance in a tiny mSATA form factor
- Ultrathin form factor provides lightweight mobility
- Features blazing-fast speeds - up to 500MB/s Sequential Reads, 175MB/s Sequential Write
- Treats compressed and uncompressed files the same, resulting in consistently fast speeds. Validated for Intel Smart Response technology
- Available in 32GB, 64GB, 128GB, and 256GB
Customer Reviews
| 34 of 35 people found the following review helpful  Great Start, Small Hiccup, Overall Good, By Jemzor (Earth) - See all my reviews Amazon Verified Purchase(What's this?) This review is from: Crucial m4 256GB mSATA Internal Solid State Drive CT256M4SSD3 (Personal Computers) I bought the mSATA version of the Crucial M4 mostly for the form factor and have not been disappointed at all. I also bought it for the fact that it's one of, if not THE only mSATA SSD I know that doesn't use compression algorithms (a la SandForce). The Marvell controller here works great and Crucial/Micron have done a fantastic job with their firmware. Just as I received it (about 2 weeks ago) they sent notice of an updated firmware that fixed most all extended use failures that people have been getting in the past. I myself have not had a single problem. As I said in the title, it may not max out the synthetic benchmark programs or have the fastest write specifications on paper but it does have one of the best reliability track records out there and it doesn't use any sort of super over-provisioning or compression to get the job done. It also has one of the most attentive companies backing it and troubleshooting the problems that do arise, so that makes it a true winne r in my book. You won't be disappointed in the performance if you're upgrading from any standard platter based HDD. Also, if you're looking for the small form factor and something to plug directly into a desktop motherboard or laptop to save space, it accomplishes that goal for you as well.For a little background on the hardware, it's been first used in an ASUS Crosshair III Formula motherboard in a SATA II socket through the Syba adapter. Afterwards I transferred it over to a new build on the Maximus V Gene where it directly plugs into the mPCIE expansion bracket (also SATA II). For those interested, it does also work wonderfully of course in the SATA III sockets on the new build which allows for faster read speeds. I however prefer the convenience of the direct motherboard interface and the fewer cables associated therewith. My perception is that it does not suffer for being attached to a SATA II socket. The response times are just as snappy and Windows 7 still grades it at 7.8 so I'm happy. If you have questions or concerns, feel free to comment and I'll try to answer as best I can from my own experience. *******UPDATE ON 28-Oct-2012******* Well.... two days after the return window to Amazon, the drive decided to fail... No warning, just suddenly a blank screen. Upon reboot, the drive cannot be found. It seems another reviewer here has the same problem with the most recent firmware revision. The drive is no longer listed at all in the BIOS in any mode (IDE or AHCI) after a crash and hard reboot. *SIGH*. I'm just glad I kept my Raptor in it's original image condition (just a month old is all). Now I have to see how or if Crucial handles the RMA and whatnot. Here's hoping my faith is not betrayed. :-( *******UPDATE ON 31-Oct-2012******* I visited the Crucial forums after trying the tech support email. I managed to find a "power cycle" reset method to allow the SSD to self correct. It worked and I didn't have to follow through with an RMA. The drive came back to life without any data loss thankfully and it's working just as well as it did before! The issue I experienced was with the 01MG firmware revision. It is known to Crucial/Micron and hopefully they are working on a fix. I am glad they do actually support their products and that the community is active in finding fixes. They did respond very quick to the support email I sent as well. My faith in good companies held true! =D Here are the links to those fixes for anyone who might also have a similar problem. First is the official procedure from Crucial: forum.crucial.com/t5/Solid-State-Drives-SSD-Knowledge/Why-did-my-SSD-quot-disappear-quot-from-my-system/ta-p/65215 Next is the procedure (slightly modified) that I used and worked quite well: forum.crucial.com/t5/Solid-State-Drives-SSD/How-I-fixed-my-M4-that-wouldn-t-detect-in-the-BIOS/td-p/110964 33 of 36 people found the following review helpful  My first ever 1star review..., By Amazon Verified Purchase(What's this?) This review is from: Crucial m4 256GB mSATA Internal Solid State Drive CT256M4SSD3 (Personal Computers) How do you rate a product that works great from a company that doesn't seem to care?Do not upgrade your Crucial m4 drive (2.5" or mSATA) to firmware 010G / 01MG. There is a known issue with the drives not being recognized after a reboot. There is a path to revert from 010G to 000F for the 2.5" drive, but not for 01MG to 000F on the mSATA drive. Here's hoping that Crucial does something to address this soon. 22 of 25 people found the following review helpful  Lenovo x230, By Amazon Verified Purchase(What's this?) This review is from: Crucial m4 256GB mSATA Internal Solid State Drive CT256M4SSD3 (Personal Computers) There has been an awful lot of bad press about Crucial leaving out a single screw from the the mSata products. This screw is used to secure the module into the laptop. Some clarification is required. Lenovo laptops include this screw in the laptop. No problem, just open it up and there it is where you would expect it to be. It sounds like Dell does not include the screw, maybe other manufacturers don't either. When you think about it, it makes sense that the PC manufacture should supply the screw, especially in a laptop. It is their hardware you are screwing into with very tight spaces. Yes, it is a standard screw, but as a rule, I think it is best the manufacturer of the PC provide that kind of hardware, just as they do for your main disk drives. SO, if you have a Lenovo, you are getting some of your money back for buying a higher end PC. If you bought another brand, you may have to go fish for a screw. you get what you pay for in this case.Some other i ssues I see come up, the speed of the mSata being SATAIII. I talked with Lenovo tech support and did my own research. Best I can tell, mSata buses, at least in the Lenovo, only operate at SATA II speed. That said, be careful to look at the various read and write speeds of a given module within given brand. Depending on the number of chips and the controller used on the module, speeds will vary. In the case of crucial, their 256GB module is much faster then the smaller modules. So, why worry about speed if it is really working at SATAII? Read speeds can quickly saturate the SATAII bus, so there, it is the bus that is the bottleneck. For write speeds, where SSDs are markedly slower, the additional speed in the 256GB module brings the write speed just about to saturation on a SATAII bus. Worth it for the work I do. This is all the theory and research I have done. Formal tests have confirmed the different speeds of the various size modules, that is k nown. Less testing and less information seems to be available on the mSata bus speeds, despite the SATAIII marketing of these things. |
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