Cherryville - SSD 520

[johnw]

With my own RAID0 Sandforce based Agility drives both reads and writes take a huge hit with compression. Unlike the writes your reads seem little affected with compression so whether that means non-SF controller or caching of the drive IDK.

The Sandforce SSDs with synchronous flash exhibit little or no decrease in read speed for incompressible data when tested with ASU or AS-SSD (except in certain heavily-used states). But the Agility uses asynchronous flash, which has much worse performance than synchronous flash. I never recommend an SSD with async flash, because the sync flash is only a little more expensive but peforms a lot better.

I'm sure Intel is using sync flash in the 520.