SSD Write Endurance 25nm Vs 34nm

[Christopher]

Your Agility60 would be interesting from another point of view: we could compare the evolution of failed blocks from two different batches of Intel 34nm and we could see how much reliability improves over time. Most probably we could trace manufacturing date (or at least an approximation) based on SSD manufacturing date and maybe NAND batch number if it has something like that.

They both use Intel 34nm, but have different product numbers. RyderOCZ was kind enough to tell me which NAND they used:

New
JS29F32G08AAMDB

Old
JS29F64G08CAMDB

I'm not sure what those bolded numbers represent

The old one had higher correctable bit errors and much higher WA, but that was due in large part to me using it in sub optimal conditions. I recently tried updating to the 1.6 FW to try and reduce those. I'm not sure why those smart reported bit errors are caused, but it seems excessive. I have an Excel spreadsheet with SMART attributes that figures # of read/write sectors to GiB host/reads writes, etc. I was really surprised once I started looking at it in detail -- I used that drive to clone drives, install random linux distros to, and then used it on a laptop with Vista/no trim for quite some time.


If the throttling situation was sorted out, I'd pick up a 60GB SF2200 25nm drive in a heartbeat for endurance testing.