intel 80gb g2 drives slowing down

[nalla]

hi all just wandering if there is anything i can do other than format my drives, i have 2 drives in raid0 when i did a clean install was getting speeds of about 480mb/s now im only getting 364 mb/s, i have noticed them slowing down lately as my friends pc boots left 4 dead 2 maps quicker than mine and hes on normal drives, i have not got a lot installed on these not even half full, i only really have a few games on them to try and avoid this slowdown problem, any help would be appreciated.

 

[nalla]

hmm just ran a different ssd benchmark and got the 480mb/s again so no slowdown there, but i am a bit confused as to why my friends left 4 dead 2 game loads quicker as his drive speeds are about 4 times slower according to a benchmark