Hey Yall im getting two 840 256 pros with some icydocks to put in my Mac Pro, Temporary "for about 6 months then moved to my pc gaming rig". Thats why im getting pros to later use in my sata III pc. I know all about the sata II limitations in the mac pro and i also know about sonnet tempos and pcie cards "dont want". The Question is if i set up two 840 pros in raid 0 on my mac pro what block size should i choose? i have about 5000 pictures in iphoto at about 3mb a piece and about 10000 songs in itunes. Im not doing any video editing or photo editing im just a average user with a 12 core . So what block size should i pick? also is using softraid the only way to get trim on these ssd in raid 0? also i shouldnt get to much degradation on the raid 0 speeds rite if i dont have trim? i am expecting 500 read and write on a sata II raid 0 setup throughout the 6 months, rite?