SSD Write Endurance 25nm Vs 34nm

[Christopher]

Anvil it seem that the SF drives are really not benefiting from the 46% compression setting. As an example the MWI exhaustion for the Chronos was worse than the M225 and only marginally better than the M4. The F3 did really well but that was a 120GB drive so it’s hard to compare with the other drives being tested. For the SF drives using 46% how did the WA come out?

Also it seems that the ability to write past MWI has more to do with the NAND rather than the controller. The NAND that Micron and Intel are using seems to be in a league of its own. Unlike other Intel models I notice that the 520 is using exactly the same IMF NAND that is being used by other SF vendors.

I think this is true, but the NAND choice largely decides write speed. The Plextor M2P and Corsair Performance Pros have the same write speeds as the Samsung 830 @ 128. Regardless of the controller, as most drives are able to handle the sequential writes with low WA, you would expect similar NAND drives at similar speeds to do about the same TBW.

That said, I think there is something about the SFs that results in lower TBW figures. Something inherent that means that the drive will peter out before any other controller with the same NAND would. This is why I'd like a 64GB Toshiba Toggle drive with the Marvel controller -- I bet it would last longer than the Chronos D, which made it to around half of what the F3 did. I also believe the Chronos D, with it's 32gbit devices, had RAISE like the 120+GB 64gbit drives. So the F3 and CDx were on a level playing field, mostly.

It could also be possible that Samsung's NAND is every bit as good or better than the Intel/Micron secret-NAND-stash. I would certainly hope they'd keep back the best stuff for their own drives.