I thought just wipe it and thats it?

the simplest way is to use disk management to produce similar outcome. the method uses built-in garbage collection (gc) and trim. all you need to do is to select the disk you wanna clean up, and delete everything (volume, partitions, etc.) in disk management. the drive will become unallocated fully. then leave it alone for 1 to 2 hours (some suggested leaving it overnight). if you're familiar with diskpart, the same can be done with 'clean'.

after the above, you can manually issuing trim to ssd again (e.g. optimize drive in w8.x) to make sure controller processes the command once more.

i am not sure about this, but if it's using the similar method that handles hdd's secure erase, then it's not safe imo.

uh? you're doing secure erase, right? of course you can do that to a bootable drive. just boot from windows install media and do it.

imo unless the ssd is slower than usual, there is no need to do secure erase often. i just do every few months (up to a year) when i think it's time to reformat the drive and have a clean install/system restore.

As long as the SSD is not being used as the boot drive, you can do this in Windows using the Disk Management utility

That part referrred to a running system in which os in the boot drive is active. It simply means to do a secure erase on it you can either boot the computer with another tool (e.g. windows install media, or simply the tool created with ssd management software), or you put the boot drive to another computer via sata cable as non-booting drive.

For read-only task, UV400 is a good budget choice. If you have tasks that writes a lot of data, avoid budget TLC drive.

http://www.myce.com/review/kingston-uv400-...-world-tests-8/

i think it's ok to use for that.

first of all you have to know uv400 is a value ssd, and for a value ssd, usually its writes is slow after its built-in cache is used up (almost like hdd speed when you transfer gigabytes of large files).

however once you get past this, game loading should be improved relatively compared to hdd.
like i said above, yes you can use it for the purpose. performance wise, it's as simple as you get what you pay for.