ok i have a maxtor ata 120gb hdd which seams to make a load of noise when its seeking and reading and at that time my pc seam to lag a bit now im wondering should i buy a 36gb raptor and a 120 gb sata hdd put them into a raid, will that make opening programs such as cs:s and dod:s or would getting another 1gb ram. if u say the ram i alrdy have 2 x512 mb sticks would i loose performance filling up all 4 slots?