Samsung PM961 SSD Wierd Benchmarks

[Marshal]

I  ran benchmark test on Samsung PM 961 SSD from two different tools and found major difference in write speed. I'm confused. 

[AT0MAC]

what driver do you use that drive with?

[Marshal]

samsung nvme driver

[AT0MAC]

Just now, Marshal said:

samsung nvme driver

I dont know how good those are, I had this same drive back in december of 2016 and at that time I think I found some obscure Dell driver that was way faster than the official drivers. you should try it out

[AT0MAC]

Just found one of the old pictures I have from when I speed testet my PM961 128GB drive

 

 

there seem to be something wrong with your driver, should be way faster than even the smallest model, and even so, my test was run in around february 2017, right before i gave the drive away - so i would assume drivers would have matured more now

[seagate_surfer]

Hello Marshal,

 

It is always recommended to use tools developed by the manufacturer, some other tools eventhough they all try to measure the same S.M.A.R.T. details, could have not been reading all data that official tools can read, or do it in the way that official tools do. With that said, tools sometimes measure for some amount of time the reads and writes (IOPS) and based on that timeframe they reflect an estimate of what it could be, in some cases a hard drive can behave very good during a test of 30-60 seconds but results vary (usually decrease) when the test is sustained for about 3-5 minutes. So, if one tools measures for one minute and the other lasts longer then the results may be different.

[Perhaps]

The samsung nvme drivers are for the 950/960/970 nvme drives not the pm/sm. OEMs normally have a particular driver for these that gives better performance I believe.

 

try and find a oem driver for the pm961

[Marshal]

There is no oem driver for pm961. I have two options: Samsung driver or Microsoft driver.  I tried both and got same result.

[seagate_surfer]

OEM stands for original equipment manufacturer, the Samsung driver is the OEM driver! You can also look for a firmware upgrade and finally if still it doesn't give you advertised speeds I would contact them to validate the warranty.

[kirashi]

On 7/30/2018 at 12:06 PM, Marshal said:

I  ran benchmark test on Samsung PM 961 SSD from two different tools and found major difference in write speed. I'm confused. 

On 7/30/2018 at 12:33 PM, AT0MAC said:

Just found one of the old pictures I have from when I speed testet my PM961 128GB drive

 

there seem to be something wrong with your driver, should be way faster than even the smallest model, and even so, my test was run in around february 2017, right before i gave the drive away - so i would assume drivers would have matured more now

Below are my amazingly epic results after I had the SanDisk piece of crap NVMe drive replaced with a Samsung PM961 in my Dell XPS 15 9560 beast of a portable laptop. What kind of system is your PM961 drive installed in right now? Laptop or a desktop motherboard? If laptop, contact your laptop manufacturer. If desktop, contact Samsung and/or your motherboard manufacturer to troubleshoot the sluggish performance.

[seagate_surfer]

Make you are also running all Windows updates, the in-house NVME driver is updated this way...