pci-e Intel 750 Cannot Enable Write Caching

[JJohn71]

I have a Rampage V Extreme motherboard with the latest chipset drivers. I also have installed the Intel 750 NVMe drivers. I cannot enable write caching in Windows 8.1 Pro. I think I disabled it while testing my PC overclocks to ensure I wouldn't get file system errors if my PC crashed but now that i'm stable I cannot enable write caching in Device Manager.

Can anyone help?

KedarWolf

[TYan3]

According to footnote 1 of Section 2.2 : http://www.intel.com/content/www/us/en/solid-state-drives/ssd-750-spec.html Intel® SSD 750 Series Product Specification , the performance is measured with "Queue Depth 128 (QD=32, workers=4)". I am not sure with "worker" here is equivalent to "thread" in CDM, but maybe you can try "Q=32, T=4" instead of "Q32, T=1"

See also: http://www.nvmexpress.org/blog/crystal-disk-marks-new-release-measures-true-performance-of-nvme/ NVM Express " Crystal Disk Mark's New Release Measures True Performance of NVMe

[EEsca1]

This thread has pretty good information from a few users on what you can properly expect from Crystal Disk Mark and how to run it.

You want to use Q=32 T=8 on the random read and write tests for best comparisons to the results shown on that thread.