Sudden decrease in SSD speed. (Crucial M4)

BeeJee

macrumors 6502
Original poster
Nov 27, 2011
369
2
Long Island/North Jersey
Hey guys and gals, I recently purchased a Crucial 256gb SSD when they were on sale a few weeks ago and at first the performance was awesome. But I just shut down my computer and when rebooted it started to act a little funny (my wallpaper was reset to factory) so I ran a disk speed test and the test showed that it is now writing 100mb/s slower than it was just a week ago! I understand that speeds will always vary a little however an almost 50% decrease is unacceptable to me. I hope I'm missing something as I want to get what I payed for and right now its not. Thanks a lot for anybody with any insight on the problem.
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
30,020
9,674
California
Are putting it to sleep immediately after use perhaps? The M4 uses a method of garbage collection in its controller that runs during system idle time AFTER a lot of write activity. Try disabling sleep and just letting it sit running a couple hours and see if that restores write performance.

Read over the TRIM section of this review of another drive for an overview of what is going on.
 
Comment
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.