Raid 0 must use drives of identical capacities.
Setting up Raid 0 will erase the contents of both drives.
Raid 0 will not improve random read speed, which is important for most activities. Ssd will though.
Suggest getting a 60 or 120 gb ssd for windows and a 1tb drive for apps and storage.
thats what im asking if i have windows on the hdd... can i move windows to ssd b4 i set the other hd in raid 0?