Plextor px 128m6s 128gb m6s series sata 25 ssd plextor m6s ssd the ultimate system upgrade the plextor m6s is an extremely efficient ssd capable of reaching 94 000 80 000 iops on random read and write as well as 520 440 mbs speeds on sequential read and write compared to the previous generation the write speed of the m6s 128 gb model has increased by an incredible 50 the m6s performance blows any traditional hard drive out of the water and translates into greater improvements i