Data Type Performance Differences
The tests we've already run employ incompressible data. An SSD that performs differently when presented with this type of information isn't a new concept. SandForce-based drives slow down when they're forced to write incompressible data. Phison's hardware goes another direction, though.
Write performance isn't affected. Rather, small-block read performance drops when pulling incompressible back from the drive. We're being liberal with the block size here and including up to 128KB.