Here are the some additional aspects regarding the performance results you obtained from your system:
- The advertised performance of the Intel® SSD 750 Series is measured using http://www.iometer.org/doc/downloads.html IOmeter* with specific conditions to take advantage of the drive's capabilities, some tools such as AS SSD allow only "fixed" tests, and in most cases the results will be different from the advertised.For example, for sequential writes, we use 128K Transfer request size, and 1 worker with Q-depth 32, this is not noted in the AS SSD test. For a more detailed description of the testing procedures, please review the http://download.intel.com/support/ssdc/hpssd/ssd-750/sb/intel_ssd_750_series_evaluation_guide_332075... Intel® SSD 750 Series Evaluation Guide, page 13 contains Sequential Writes information.
- Make sure you are using the https://downloadcenter.intel.com/download/23929/Intel-Solid-State-Drive-Data-Center-Family-for-NVMe-... Intel® Solid-State Drive Data Center Family for NVMe Drivers, version 126.96.36.1997. The latest Intel driver has a lot better performance than the Windows* in-box driver.
- Confirm that the SSD is connected to a PCIe Gen3 x4 connector. The drive is backwards compatible with lower speeds but will not achieve its best performance with slower connections.
- It is highly recommended to contact the http://www.intel.com/support/oems.htm Computer Manufacturer Support and make sure you are using the most recent BIOS for your motherboard.