I want to turn my gaming rig into a striped raid array. I know the 2 drive's have to be the same. My question is the same true for the drive's cache. I have 2 seagate 500gb 7200.11 drives but one has a 16mb cache and the other a 32mb cache. Can I still use these 2 drives together or will the cache size really make a difference? Thanks for any help!