We review the new Toshiba OCZ RD400 PCIe NVME SSD. The product in it's core really is an M.2. SSD placed on a PCIe daughter board. So if you have a properly fast M.2. slot (with four PCIe Gen 3.0 lanes tied to it), you might as well use that one as Toshiba will release these SSDs with and without the PCIe daughter card. Once in use, you do get an amazingly fast storage unit producing breathtaking numbers. We have been closing in at 3 GB/sec read speeds whereas 1.5 GB/sec writes can be considered something normal. Priced aggressively Toshiba seems to have the something special in their hands, and it's all about NVMe. NVMe - is an abbreviation for NVM Express, NVMe, or Non-Volatile Memory Host Controller Interface Specification (NVMHCI) and boils down to the specification for accessing solid-state drives (SSDs) attached through the PCI Express (PCIe) bus. "NVM" is an acronym for non-volatile memory, which is used in SSDs. As a logical device interface, SATA3 might not have been long among us, but the performance of NAND based storage is growing much faster compared to the adoption of SATA ports. Your free PCIe lanes as such are a really fast alternative as it is an interface with much more available bandwidth.