CrystalDiskMark’s sequential read test shows the SSD 750 Series 1.2TB drive hitting 1.5GB/s, which is a far cry from the advertised 2.4GB/s. Without the NVMe driver installed the SSD 750 was limited to just 779MB/s, though this is still considerably faster than a 2.5" SATA SSD.
Interestingly, while the Intel SSD 750 Series 1.2TB fell well short of its target for sequential read performance, it actually exceeded the claimed write performance of 1.2GB/s by hitting 1.3GB/s.
Without the NVMe driver installed, the random 512K performance of the Intel SSD 750 1.2TB drive was terrible, managing just 229MB/s making it the slowest SSD tested. However with the driver installed performance is boosted by almost 5x hitting 1063MB/s, which is more than twice the performance of the best SATA 2.5" drives.
The 512K random write performance of the Intel SSD 750 1.2TB drive without the NVMe driver installed is still good reaching 774MB/s. However with the NVMe driver installed the throughput reached 1.28GB/s, which meant that the write performance was actually higher than the read.
The NVMe driver only slightly boosted the random 4K-QD32 performance to our surprise but with a throughput of 553MB/s, the SSD 750 was still considerably faster than anything we had tested before.
Again we see that when measuring random 4K-QD32 performance, this time write performance, the NVMe driver doesn’t offer much extra oomph.
