Fusion-IO thus far has competed in an entirely different space: datacenter-grade PCIe SSDs. They not only boast the use of fast PCIe interface, but also software and hardware design that supposedly are tailored to datacenter-type workloads (e.g. databases).

These Samsung drives are not quite suited to datacenter use, at least in their current form; from the use of the mini-pcie interface to their controllers and firmware. Perhaps this will change, but that will be in an entirely separate product.