I hope SSDs have improved because I had a couple go bad from wear not long ago. They were out of warranty, of course. That article discusses the optimizations Windows does for SSD drives. It's possible, but unlikely, that PVRs will do the same. This is because many of them are using versions on Linux that is several years old or may have stripped down disk drivers that do not recognize SSDs. Therefore it would be wise to check that trim is enabled before installing an SSD in a PVR. It would also be wise to not fill up the drive since that can accelerate failure. Also note that switched on PVRs often write constantly to the drive, which will cause more wear than normal PC use.