The OCZ RevoDrive X2 is the fastest single SSD product you can install in your system. It is almost inconceivable that it's also one of the easiest RAID products to install as well. Anyone looking to keep their case clutter down and still have the performance benefits of RAID will really like the X2, as will anyone with a small form factor system that is simply incapable of holding four SSDs and the cabling required to attach them to the system. Equally as impressive is the RevoDrive X2's ability to run off PCIe so you don't have to saturate the Intel ICH SATA ports, leaving your SATA ports available for large drives for long term storage or movies, music or whatever your large files consist of.
Just like the original RevoDrive, you can go into the Silicon Image BIOS and tune the array to best fit your needs; high IOPS or faster sequential transfer speeds. OCZ has shipping the card in a well-rounded state so users looking for drop-in performance will be very satisfied with the results right out of the box. Experienced users looking for a new way to tweak more performance out of their system can experiment with the options available and gain even more of a boost.
The only down side is the X2 comes with a price premium, but over time we do look for the price to go down as all computer parts do. Our 240GB RevoDrive X2 is available at Newegg now for 679.00 USD. At the time of writing four 60GB Vertex 2 drives would cost you around 536 USD at Newegg, but then you need to either use an additional controller, the Intel ICH which would easily be saturated by just three drives and then have to worry about cluttering your system up with all of the cables required to get the RAID array up and running. I think most users would opt for the X2 and leave the case clutter to someone else. This option also aids in airflow to the other components that enthusiasts will more than likely have overclocked, so the benefits are more than just what shows up on the benchmarks and specifications lists.
One area that we will have to look for over time is how the RevoDrive X2 performs after long term use. There is still not a way to run TRIM in RAID, but the SandForce controllers are very resilient to 'SSD fragmentation'.
I wouldn't hesitate to use the OCZ RevoDrive X2 in my own system and our sample X2 is going to quickly disappear from the inventory list since I am starting my SR2 build this week. With all of the SSD drives we have on hand I will be using the RevoDrive X2 for my OS.