what about using a screen recording software (Dxtory ,Shadowplay) ?
is there a big deference between 250MB/s and 520MB/s write speed in these programs?
I am also split between these two : Crucial M500 240GBhttp://www.amazon.com/gp/product/B00BQ8RM1A/ref=ox_sc_sfl_title_2?ie=UTF8&psc=1&smid=ATVPDKIKX0DER
SanDisk Ultra Plus 256GBhttp://www.amazon.com/gp/product/B00APEG8NO/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER