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.
Summary: Come on I've got mechanical drives over 5 years old still going strong. System just started to blue screen one day and finally refused to boot telling me insert valid boot device. I've run every test I can think of and some that people have recommended in forums and final conclusion is the SSD is either dying or it's already dead.
Pros: It was very fast, boot in about 5 seconds, games were fast as were all programs loads.
Summary: I've seen this HDD vanish from boot list and require some intense fiddling with DOS utilities as well as disconnecting/reconnecting of SATA cables. It's a massive amount of headache and stress for the few seconds of boot time it shaves off regularly.
Pros: During sales, fairly cheap for its effectiveness. Otherwise massively overpriced, however. That's all.
Cons: Incredibly vulnerable to vanishing from BIOS and boot list during any sudden power loss (shutdown from overheating, power outage/surge, etc). While this is a known issue for all SSDs, the Crucial M4 is known for having this issue more so than almost any other I've seen.
Summary: Now I'm on the fence about getting another.. was the technology too new two years ago and are recent SSD drives more reliable?
Pros: Very fast, while it lasted.
Cons: I bought 5 of these for 5 PC builds, and after 2 years and 5 months of almost daily use one of them started causing blue screen of death errors, like other reviewers here have noted. Replaced the drive and all is back to normal.
Summary: This was great until it just completely up and died on me one day while playing a game. Oh well I guess....
Pros: Awesome speed Awesome boot times No problems for the first two years....
Cons: Random lock ups and weird errors on windows 7 such as... 0xc000000f 0xc000000e A BSOD with "STOP: 0x00000F4 (0x0000000000000003, 0xFFFFFA8008BB7B30, 0xFFFFFA80008BB7E10, 0xFFFFF800031E88B0)" Sometimes it will boot.... sometimes it won't. Long story short.... this SSD was to blame. I purchased this in late 2011, and it just started to die. 2 eggs for the 2 years
Summary: I gave it two stars because it worked fine for a bit and at least died gracefully enough I had time to plan for it... though only worked for two years, so I wouldn't recommend this SSD.
Pros: Worked great/fast for a little over two years.
Cons: Purchased in late 2011. A little over two years later (normal use), windows started randomly crashing (BSOD) and on reboot, the computer would say no physical disk found. Further reboots would then work as expected. Worried that the hard drive had problems, I ordered a new SSD and used Clonezilla to clone the bad SSD to the new one. At 98% complete, clone failed and Clonezilla alerted that the source disk had bad sectors. Tried again and clone worked. Just glad to be ...
Summary: I will test out the RMA process with Crucial but I do not have very high expectations of success. IF I do get a working drive from them I will only use it as a hybrid drive that has no long term data storage.
Pros: Fast and I got it on sale for an excellent price. Was very easy to install and use.
Cons: Just after two years of normal use as a boot drive and I started having issues. About 45-60 minutes after my computer was on, regardless of type of use, the computer would lock up or reboot. Sometimes I would get a blue screen and error message but most of the time nothing. The computer would reboot and hang during the process and not recognized my normal HDD or this SSD. I ran through all kinds of trouble shooting to include replacing the MOBO before reading reviews ...