Samsung SSD 950 Pro

Zitat

Speaking of steady-state performance, there are two things I was specifically happy to see in the SM951-NVMe. The first one is the unbelievable IO consistency, which isn't that significant for a client drive but if Samsung can pull off something equivalent (with higher performance, of course) in the enterprise space, then I'll be excited. It never hurts to have that level of consistency in a client drive either, but the it just isn't used to its full potential since client SSDs and workloads are more about peak than sustained performance, which is the opposite of enterprise workloads.

The second part is low queue depth random read performance. This is the area where we haven't seen much improvement in the past few years because ultimately the bottlenecks have been AHCI overhead and NAND latency. Fixing the latter requires a new type of non-volatile memory (e.g. ReRAM, MRAM or NRAM) with significantly lower read latency, but that isn't on the horizon until around 2020. In the mean time, the only way to improve random read latency is to cut the driver stack overhead, which is exactly the purpose of NVMe. The reason why I'm so excited about low queue depth random read performance is the fact that they account for a large of the total IOs in typical client workloads (especially the less intensive ones), so any improvement will translate to better user experience and performance, which is ultimately what a consumer is looking for.