2010 Value SSD (~$100) Roundup: Kingston and OCZ take on Intelby Anand Lal Shimpi on June 3, 2010 12:01 AM EST
All three of these value drives support TRIM. To gain some insight into how the individual controllers implement TRIM and how they behave in a highly fragmented state I filled the drive with garbage data and then peppered it with random data on top of that for 20 minutes. I then ran HD Tach on the drives and generated the graphs below.
Intel X25-V after Torture
The Intel drive loses a lot of its performance in this highly fragmented case, it does try to restore performance though. The controller is constantly fighting to reorganize fragmented data and restore itself to full performance. TRIMing the garbage data brings performance back to new:
Intel X25-V after Torture and TRIM
Kingston's drive is surprisingly resilient after our little torture session:
Kingston SSDNow V Series Boot Drive New Performance
Kingston SSDNow V Series Boot Drive after Torture
Average read performance drops a bit but average write performance is largely unaffected. A TRIM pass restores read performance to nearly new:
Kingston SSDNow V Series Boot Drive after Torture and TRIM
It's not a full restoration however. Kingston doesn't appear to TRIM as aggressively as Intel or most other manufacturers. Thankfully with write performance largely unaffected this doesn't really matter.
OCZ Onyx after Torture
The Onyx's performance after torture looks bad. If you don't have TRIM support in your OS, the Onyx isn't a good choice.
OCZ Onyx after Torture and TRIM
A quick TRIM pass and performance is as good as new on the Onyx.
The best pick here if you don't have TRIM support appears to be Kingston's SSDNow V Series Boot Drive.