The official 4K random write rating for the NM600 480GB drive is up to 156,000 IOPS. As you can see from the results graph at 53,747 IOPS (QD32) we couldn't get anywhere close to that figure with our 4 thread tests. As with the random read tests, we did a quick test using eight threads at a QD of 32 which saw a dramatic rise in IOPS, with the drive reaching a maximum of 212,825.7 IOPS – far exceeding the official figure.
4K Random Write v QD Performance Compared.
The NM600 has real problems with our 4K write tests, sitting at the bottom the of the chart throughout the tested queue depths.