NVMe changes the way companies test products, but the new methods do not mimic common consumer storage workloads.
On-paper performance is not worth much until the industry develops operating systems and software applications that take advantage of the advanced queuing features enabled by the NVMe protocol.
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OCZ is not as aggressive with pricing as we expected, but the 256GB and 512GB drives list for less than Samsung's 950 Pro NVMe SSDs with comparable capacity (SSD-only configuration).
The RD400 models that include an OCZ-branded M.2 to PCIe 3.0 x4 adapter increase the cost of each drive by $20.
The OCZ RD400 competes well against the Samsung 950 Pro and Intel SSD 750 products.
On paper, all three products dice the specifications with each outshining the other in one of the four-corner workloads for separate capacity sizes.
Because of that, we will not comment on spec-sheet performance, and instead will show how the drives perform later in the review.
The RD400 architecture is identical to the Toshiba XG3 OEM-focused SSD we purchased earlier in the year.The process will slow OCZ's aggressive style, but at the same time it will remove the negative aspects of OCZ's previous business model.Historically, the Revo Drive products have been OCZ's workstation product for professional users with a need for very high performance in sequential workloads.The RD400 is faster than the XG3 products we have tested, and some of the performance and throttling characteristics lead us to believe that the RD400 features a higher controller clock speed.We asked OCZ about the clock speed, and it replied that the RD400 uses the same clock and thermal throttle settings as the XG3.It means the days of OCZ playing fast and loose with its products are over.