Hi B.A.T, the M4 seems to be doing rather well so far.

MWI is close to the 320, but writes speeds are much faster. The capacity of the M4 is larger, so faster write speed could be expected, but it does not seem to be having a significant impact on wear. (Compared to John's Samsung that is).

SMART attribute 181 is interesting. Looking at the literature that John posted: "This attribute tracks the number of use data accesses (both reads & writes) where LBAs are not 4KB aligned or where size is not modulus 4KB, assuming logical block size = 512B."

That seems to confirm a suspicion I had that 4KB alignment only occurs where it is possible, but in real life applications there are many reasons why 4K alignment may not be achievable.

Hi John, whoa, you will be first past the post at the rate you are going.