raid is Pointless on SSDs as there response times are so low you not notices the increased data rate (unless you ran an benchmarks or copyed files from 4 RAID ssds that have 2xRAID 0 SSD setups, but thats not real world use HD tune and tach are just for Epeen now when SSDs are used you need to be looking at the Random Write access time tests with SSDs to see good from bad SSDs), you also Lose TRIM support if you use that raid card even if its Not in RAID mode, so the drives performance would likely drop
i bet that i be Hard pressed if i upgraded my SSD thats the Corsair S128 (90MB read 70MB write) to the P128 (200MB/s read/write) as the Access times will be the same for Any SSDs