(what is up with the hovering ads on the forum its impossible to use chrome as 30-70% of the screen is taken up with 1 or 2 floating ad's that I couldn't close, I have to use mobile edge just so I could read and post this, i thought chrome was supposed to be blocking floating ads that did this disruptive ad layout, guess I just report it see if they do anything about it sorry, in line ads are fine, floating ads are not)
With kingston if it has 1 letter parts it's normally a dramless ssd (like the spammed a400's on ebay I had to create a -a400 just so they go away from Search) 2 letter parts its a dram based ssd
But kingston will change the NAND type but not make a new sku (so could be slower type NAND that the controller supports or) they don't norm change the controller and dram specification, just the NAND based on price (as there is 2-3 different types with different performance and bandwidth)
I buy the uv400 often never had one fail (only ever had 4 ssds fail below), they are not the fastest out there compared to other ssds but still many times faster then a hdd and for home/office use they are perfect
other plus is they are rated 1A max power draw so you won't have any issues using the uv400/uv500 ssds in a external 2.5 hdd cady that only uses one USB port to power it
only had 1 personnel 840 evo fail outright witch I was tad annoyed about (system was left on unattended for 30-40 days came back and Jim it was dead on post smart failed on reboot data not accessible)
Had 3 SanDisk ultra plus (I think) 2 got stuck in Infinite read fail ECC read retry state (it wouldn't give up trying to read the data it couldn't actually read any more so made data recovery bit more tricky) on random parts of the SSD so data was mostly Recovered at least, and the last one unformatted it self after 1 minute of been formatted (very bezare that one)