The OCZ Z-Drive R4 PCI Express SSD contains eight SandForce SF-2281 processors, 128 pieces of NAND flash memory and a Superscale Storage Controller. If ever a MONSTER storage device was created, the R4 definitely answers that call. In fact, a simple review just doesn't seem appropriate for the OCZ Z-Drive R4 (Z-R4). Let's throw it in the ring against FUSION-IO's ioDrive Duo (io-D), see who can go all twelve rounds and emerge the true heavyweight champion. Let the storage wars begin!