The ssd alone is preferable so you have direct control of what is utilizing the sdd. Velocs are really not worth it. Another option would be a 60gb boot drive + regular 7200rpm hdds in raid 0, still not using ssd caching. The main benefit of a ssd is the access times as raid 0 can match the throughput of a ssd. But imo load times aren't too bad for games on a single 7200rpm hdd.