If you’re interested in SSD, chances are you’ve been paying attention to the allegations of performance degradation in Intel’s X25-M drives. AnandTech dives into the issue (and many, many more topics) in 31 page exploration of the state of solid state. It’s a spine-tingling read, in part explaining how write-speed degradation is largely thanks to partially used pages containing portions of deleted files.

Read more here: 
AnandTech explores the virtues and woes of today’s SSD