I re-ran the windows experience indexer today and the rating on my primary windows drive (a Kingston V300 SATA 3 240GB SSD) has gone down by 2 points from 7.9 to 5.9. I bought the drive when I built the rig in January this year.
Surprised by this I ran a benchmark on the drive and compared it to my other identical SSD which I bought much more recently and have been using as a secondary applications drive. The results are shown below - first picture is the new drive, second is the 3+ month old drive.
I realise that this isn't entirely scientific - a better comparison would be a benchmark from the same drive taken at the two time points, but I don't have this, and given that the primary drive was rated 7.9 when it was new I tend to assume that its performance at that time was similar to the newer drive's performance today.
I'm aware that enterprise SSD drives apply techniques such as write combining, over provisioning and TRIM to reduce performance degradation, and my Kingston drive may or may not have these features being a relatively cheap variety, however I'm still pretty surprised that performance can apparently degrade so much and so quickly.
This may be nothing new to people, so I apologise if this really is old news, but it surprised me.
I guess my question is, have others experienced this, and is there any way to reverse it?