In our random write tests the SN750 peaks at the QD16 mark at 335,910 IOPS still well short of the official 560,000 IOPS.
4K Random Write v QD Comparison
The previous WD Black NVMe drive beats the Black SN750 at QD1 when it comes to random writes, however this soon switches around as the queue depth deepens with the newer drive well out in front.