SSD Write Endurance 25nm Vs 34nm

[minpayne]

I checked my X25-E drives and all have unsafe shutdowns, looks like 20-30% of the shutdowns are unsafe.

I performed a few tests last night and when Unsafe shutdown increased, the Power Cycle Count did not.
(I had expected Power Cycle Count to increase on every power Off and it didn't)

But at the same time, it seems as though most drives don't act this way... the Intel's power cycle may = 1 power on + 1 ATA shutdown. If the unsafe shutdown increases, power cycle doesn't. Other drives just assume that the drive has to be on to get turned off

So the true number of power cycles for an Intel is Power Cycle Count + Unsafe Shutdown.

Can I ask you guys what's the firmware of your X25-E's? Mine is 045C8850. This disk has been used in 4 different computers during the past 2 years and I don't know which computer(s) might did most of the "harm" to it.

I've done some simple tests of the "0C Power Cycle Count" and the "C0 Unsafe Shutdown Count" here in the current computer (ThinkPad X220, BIOS 1.25):

1474
1033

soft shutdown

1475
1034

soft reboot

1475
1034

sleep

1476
1035

hibernate

1477
1036

It looks like the difference between my 0C and C0 is locked I'll test it in another computer and see if it's the same problem.

Edit: just confirmed that my desktop E760 motherboard doesn't increase the "C0 Unsafe Shutdown Count" when doing soft shutdowns in Windows. It's obviously something wrong with the ThinkPad X220.