Fragmentation over time and TRIM
A few performance snapshots taken throughout our testing:

Western Digital SiliconEdge Blue 256GB SSD Review - WD enters the SSD market - Storage  1

Slight dips as a result of hammering from our testing suite.

Western Digital SiliconEdge Blue 256GB SSD Review - WD enters the SSD market - Storage  2

A second pass shows the restoration of full write speeds without needing TRIM.

TRIM

We noted no background / self-healing / AUTO-TRIM activity taking place.  In addition, while TRIM appeared to be implemented and functional, it only helped to keep sequential write speeds up in the face of random writes taking place.  With the drive performing at a relatively low level of performance in the first place, TRIM did little to help it, but at least it helped stop it from getting worse over time.  That said, even when tested without TRIM in use, the SiliconEdge Blue did a good job at keeping its performance relatively constant.
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