NVMe SSD speed tests..

[HarzVieh]

WD Black PCIe NVMe Install & Review vs Plextor M8Pe w/ Linux
https://youtu.be/aRX8-LSQCEA
DasGeek:

Would love to know your read and write speeds if you have an NVMe drive to test!

I did test some:
Western Digital: WDS256G1XOC-OOENXO
Read: 1,9 GB/s
Write: 94 MB/s
Here are the advertised speeds for this drive:
Read: 2050MB/s
Write: 700MB/s
Samsung: Samsung SSD 970 Evo 250 GB
Read: 3,3 GB/s
Write: 531 MB/s
Here are the advertised speeds for this drive:
Read: 3400MB/s
Write: 1500MB/s
Both drives on M.2 slot with support for PCIe 3.0 x4 on different Motherboards. And yes, I did't find any options in Bios to adjust.
Testet from live Linux Mint USB stick, with the benchmark from "Disks" because it won't let me test the write speed on the disk in use.

[catweazel]

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Read: 2050MB/s
Write: 700MB/s
Samsung: Samsung SSD 970 Evo 250 GB

Eat my dust

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boot@AX370:~$ sudo hdparm -Tt /dev/md0
/dev/md0:
 Timing cached reads:   21390 MB in  2.00 seconds = 10707.98 MB/sec
  Timing buffered disk reads: 14848 MB in  3.00 seconds = 4949.03 MB/sec

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boot@AX370:~$ dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output
10240+0 records in
10240+0 records out
83886080 bytes (84 MB, 80 MiB) copied, 0.0271973 s, 3.1 GB/s

2 x Samsung SSD 970 Evo 250 GB in software RAID 0.

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boot@AX370:~$ sudo hdparm -Tt /dev/sda
/dev/sda:
 Timing cached reads:   21438 MB in  2.00 seconds = 10731.57 MB/sec
 Timing buffered disk reads: 1588 MB in  3.00 seconds = 528.79 MB/sec

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boot@AX370:~$ dd if=/dev/zero of=/media/boot/HWRAID-5EE-C/Working/Temp/tmp bs=8k count=10k; rm -f /media/boot/HWRAID-5EE-C/Working/Temp/tmp
10240+0 records in
10240+0 records out
83886080 bytes (84 MB, 80 MiB) copied, 0.0452228 s, 1.9 GB/s

6 mechanical clackers in hardware RAID 5EE.

[smurphos]

Not NVMe but a SATA Crucial 250GB MX500... - spec sheet says SATA 6.0Gb/s • 560 MB/s Read, 510 MB/s Write

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sudo hdparm -Tt /dev/sda
/dev/sda:
 Timing cached reads:   5858 MB in  2.00 seconds = 2932.11 MB/sec
 Timing buffered disk reads: 1536 MB in  3.00 seconds = 511.86 MB/sec

[HarzVieh]

Eat my dust

Naa.. it's not about the "my Pen is bigger than the size of the Galaxy.."
if you did watch the video, he is confused about the benchmarks just like me.. so if you can't trust the advertised speed, und you do test it,
and 700MB/s is not 94MB/s right?
Edit: 19 okt 12:41 time.. for the ocasional search Hit, and mostly for my self:
https://www.hardocp.com/article/2015/11 ... y_update/2

Even this reviewer was recently forced to reintroduce his palm to his face when trying and failing to test a SATA M.2 SSD..

Second Edit: 19 okt 13:38 time.. and here is the solution to the Benchmarks confusion:
https://www.hardocp.com/article/2015/04 ... _reviews/1

In reality, judging SSDs by the headline numbers of IOPS and read/write speeds is like comparing apples and orangutans. It just doesn't make sense.

did you read oranges?.. me too.. that's our Brains compression tricks I guess..