2 Replies Latest reply on Aug 9, 2015 11:46 AM by randomaccess Branched to a new discussion.

    Intel 750 Series 400GB PCIe NVMe 3.0 SSD slowing down


      Hi ,


      I am using Intel 750 Series 400GB PCIe NVMe 3.0 SSD. I have noticed that it is not that snappy recently.

      I have run the AS SSD Bench mark & I can see the low



      Initially this was the test result.




      It is getting slower and slower.


      I have attached the File from Intel SSD toobox


      General Information

      Manufacturer : HP

      URL : http://www.hp.com

      Computer : HP Z820 Workstation 103C_53335X G=D (HP 158B)

      Version : J63 v03.85

      SMBIOS/DMI Version : 2.70

      Plug & Play Version : 1.00

      Date of Manufacture : 19 November 2014

      (EE)PROM Size : 16MB



      SCSI General Properties

      Controller : 2

      Bus : 0

      Target ID : 0

      Logical Unit No. : 0


      General Capabilities

      Model : NVMe INTEL SSDPEDMW40

      Revision : 0135

      Serial Number : VCQC15670*********


      Latest Firmware

      Version : 8EV1

      Date of Manufacture : 12 May 2015

      Update URL : http://www.intel.com


      Translation Mode Disk Geometry

      CHS Geometry : 48641 x 255 x 63

      Bytes Per Sector : 512bytes

      Capacity : 372.61GB


      Cache Information

      Read Cache : Yes

      Write Cache : No

      Prefetch Buffer : No


      Partitions Information

      Partition 1 : GPT EFI system partition 100MB (1MB-101MB)

      Partition 2 : GPT Microsoft reserved partition 128MB (101MB-229MB)

      Partition 3 : GPT Basic data partition 372.39GB (229MB-372.61GB)


      Logical Drives

      Logical Drive : C:


      Performance Enhancing Tips

      Tip 1803 : Disk firmware update available. To update, visit the manufacturer's website.

      Tip 2 : Double-click tip or press Enter while a tip is selected for more information about the tip.

        • 1. Re: Intel 750 Series 400GB PCIe NVMe 3.0 SSD slowing down

          Hello randomaccess,


          Please use Intel® SSD Toolbox and run the Intel® SSD optimizer function to your drive, then check if this improves the behavior.


          Also, check if TRIM is enabled in Windows*. Open a Command Prompt with Administrative privileges and executer the following command:


          fsutil behavior query DisableDeleteNotify


          If the result is '0', it means that TRIM is enabled.


          If the issue persists, please consider the following:


          Have you tried running standard maintenance tools on your drive? (Disk cleanup and Error-checking)

          Have you noticed any other issues on the system? Application issues, check for viruses, etc.

          • 2. Re: Intel 750 Series 400GB PCIe NVMe 3.0 SSD slowing down

            I used the Intel SSD Optimizer, Trim is enabaled. I have done the full virus scan, it was clean.

            Windows is unusable , it is freezing all the time, probably waiting to finish writing something.


            I cloned the disk on to another SSD which is attached to a areca ARC-1882X Controller Card. I booted from the SATA SSD.

            Windows is running smoothly & everything is back to normal.


            Here is the benchmark. You can notice Intel 750 is D Drive. You can notice 4K-64Thrd is way too low.



            There is  definitely something wrong with the Intel 750 PCIE NVME SSD. I am planning to return it if there is no resolution found.

            I had faced a similiar problem with Samsung 840 Evo drive for which Samsung released a fix. It was to do more with the read than write.

            Here I think it is the write problem.



            I deleted everything from the SSD, I used the Intel Optimizer & left it running for 24 hours, but there is no major improvement.