Samsung 960 Evo Speeds

Im curious what kind of speeds I should be seeing? I benchmarked my 960 Evo after installing the NVMe drivers from Samsung and the speeds seem off. I used Crystal Disk Mark v5.2.1 x64 Particularly the read speed on the first test.

Im also pretty sure Trim should be enabled, but isnt a listed feature.

 

Your seq write is on the slow-ish side, but are you noticing any performance issues during normal use?

Open an elevated command prompt and type: fsutil behavior query disabledeletenotify

If you get a "=0", that means Trim is enabled (it's enabled by default). A "=1" means it's disabled.

 

It's almost as if the drive is not using SLC cell acceleration any more.

 

I havent noticed any performance issues per se. However, I have noticed my system isnt any faster than my old Sager NP8235 with an Intel SSD using SATA.

It is enabled even though CrystalDisk shows that it is not.

Can you elaborate on this? How would I test or confirm this? Should I create a RMA/warranty claim for the SSD?

 

While, on paper, your current Samsung drive is much faster than the SATA drive, I'm not sure of how much of an appreciable difference there is in everyday tasks and gaming.

It's omitting a lot of info in the "Features" field; that's normally where you'd see it, but it's not exactly counter-informative to what the command line showed you.

You can try TRIMcheck, just to double confirm.

 

OP Test also ATTO Disk Benchmark Will push your ssd harder. This is what you should expect.

 

Something along the lines of what i'm getting with mine....

 

The same review site has CrystalDiskMark benchmarks as well. Mine arent even close. Their benchmark on the test system below:

 

Normally that kind of write discrepancy occurs when caching/buffereing is set incorrectly (or disabled for some reason, causing every write to be checked).

The Tomshardware review for the 250GB model also has a very interesting write graph over time:
http://www.tomshardware.com/reviews/samsung-960-evo-nvme-ssd-review,4802-4.html

Seems to suggest that the large majority of the performance actually comes from the TurboWrite buffer which is just too small on the 250GB model for longer sustained writes.

 

The benchmark from post #8 is of the 250Gb version, which is what I have and there is still a very large discrepancy for the same test.

 

Download Samsung Magician and see if the software can see if something is wrong? I'm assuming you have the latest NVME driver.

 

Also check it is on the latest firmware.

 

Samsung Magician reports no issues. Im using the latest NVME driver from Samsung.

I have already confirmed it is the latest.

Here is the latest Samsung Magician performance test. Write's are really low.

 

You have only two options. Backup everything - wipe your disk (secure erase) and make a new clean OS install and test again or RMA. Backup all important data anyway as always.

Edit. For the records... How much space is used on your ssd and how high is the maximum ssd temperature in benchmark tests?

 

47 Celsius which is equivalent to 116 Fahrenheit.

 

In full load? What I can see in OP is idle ssd temp. Test with mentioned ATTO benchmark. Will push your ssd harder than the other tests.

 

I would look at secure erasing it too and testing it in another machine if you can, otherwise RMA.

 

That was the temp that was refreshed during the speed test. It wasnt updated after the test was completed.