None. A single top-line card would do. Both SLI/CF and RAID are waste of battery, and won't give you worthy benefits.
i dont know if someone interested in buying a gaming laptop actually cares about battery life, but either way, sli/cf and raid are pointlessNone. A single top-line card would do. Both SLI/CF and RAID are waste of battery, and won't give you worthy benefits.