SSD Write Endurance 25nm Vs 34nm

[canthearu]

Ok, new drive time:

I was kind of disappointed in how the first vertex 4 went ... so it is time to kill another:

This time, I'm going to change the rules.

Drive settings:
Firmware version: 1.5
Overprovisioning: 60 GiB
Static Data: 16 GiB

I am overprovisioning the drive so it stays in performance mode permanantly. I think the constant switching between performance and storage mode, as well the garbage collection the switch caused, was making the drive use excessive write cycles.

There are many new factors that may influence the way this drive goes:

a) If the drive is using NAND in an SLC type fashion, then each erase does twice the damage over normal MLC, as each erase cycle would only be wiping one bit, rather then 2

b) The drive may take a lot less damage during writes if the NAND is being used in an SLC type fashion, as each cell is only written once each pass.

c) Reading the data may be easier if each cell is only written once. Thus the drive may last longer due to less ECC being needed.

How this ends may really be up to how the NAND behaves.