Corsair today put out a new capacity leader in its Extreme Series SSDs as a bid to claim the best of both worlds. The X256 reaches 256GB of storage but will theoretically cost less than the earlier P256 through slight sacrifices in speed: it reads faster at 240MB per second but gives up a slight amount of write speed, dropping down to 170MB per second, and halves the cache to 64MB. An Indilinx B