CrystalDiskMark does not detect my SSD.

[knowledge2121]

I have windows 7 on an HDD and Ubuntu 16.04 MATE on the SSD, GRUB2 is installed on the HDD and the SSD gets booted from the HDD.

I run CrystalDiskMark as Admin but only the HDD shows in the drop down list.

Both the BIOS and windows detect my SSD though.[it shows up in device manager]

 

[drjiga]

Possibly it has something to do with the file system, if you're running Ubuntu on the SSD, it is probably formatted as an ext.

CrystalDiskMark writes and reads files to calculate performance of a drive, so possibly it cannot read/write to ext formatted drive, thus it doesn't see it -- just a guess.

 

[knowledge2121]

yeah, that might be it. HD tune detects it though but its results are inconclusive ... I get 520MB/s with a block size of 8MB and around 150MB/s with a block size of 64KB.


what do these mean ? what is the actual sequential read/write speed ?

 

[drjiga]

Not familiar with HD Tune and what ssd you have, but 520MB/s sounds like sequential read/write speed for a typical ssd in non-RAID configuration.

 

[knowledge2121]

I have a Corsair Force Series LE 7mm 240GB SATA 6Gb/s : http://www.canadacomputers.com/product_info.php?cPath=179_1229_1088&item_id=092426

I just wanna know the sequential read/write speeds of the SSD to figure out whether my mobo supports SATA3, if they are above 300 MB/s it means the mobo supports SATA3...Am i right ? based on the info I gave you, does my mobo support SATA3 ? Am i utilising the SSD to its max performance ?

 

[drjiga]

Theoretically, SATA3 has a maximum data throughput of 750 MB/s. However, in the real world that's limited by a number of factors, such as how quickly the CPU and SATA controller can process and move the data being read/written.

Based on the numbers you posted, I'd say yes -- it's running at SATA 3 speeds and you are getting optimal performance out of it.

Check out this article for more info: http://www.tomshardware.com/reviews/corsair-force-series-le-ssd,4558.html