How To Fix Slow Write Speed of Toshiba SSD on the Dell XPS

How To Fix Slow Write Speed of Toshiba SSD on the Dell XPS

How To Fix Slow Write Speed of Toshiba SSD on the Dell XPS

I recently purchased a Dell XPS 13 Touch configured with a 512GB PCIe SSD. It wasn’t until I used Visual Studio 2015 to deploy a database project that I noticed extremely slow write speeds.

It took 30 agonizing minutes to publish a database that should have only taken 3 minutes. I was pretty frustrated with this experience, especially since this is a brand new high-end laptop.

After some searching, via Google, I found out that some of these laptops come with a Samsung SSD, and others have a Toshiba SSD. To make matters worse, I was reading that the Toshiba was supposed to be faster than the Samsung SSDs configured in these machines.

It turns out that a feature called Windows write-cache buffer flushing was the culprit for the sluggish write speeds. Turning this feature off gave me much more acceptable write speeds.

I tried several other suggestions I found before running into this tidbit of information and none worked but this one.

To turn off Windows write-cache buffer flushing:

  • Open Device Manager
  • Expand disk drives
  • Right click on the disk NVMe THNSN5512GPU7 NV (in this case) and click Properties
  • Click the Policies tab and make sure both available options are checked

device-manager

disk-policies

Before (abysmal write speed):

slow-write-speed-before

After (much better write speed):

better-write-speed-after

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