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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


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


Revision : 0135

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

Latest Firmware

Version : 8EV1

Date of Manufacture : 12 May 2015

Update URL :

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.

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2 Replies
Honored Contributor II

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.


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.