SSD/HDD Speeds when connected via PCI Express 2.0 x4

sacrednut

Reputable
Jun 8, 2015
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Using a SYBA SD-PEX40054 PCI-Express 2.0 x4 SATA III (6.0Gb/s) Controller Card ( or any other controller card that offers SATA 6Gb/s ports, limited to PCI 2.0 x4 connection) and connecting a combination of SSD's and/or HDDS, all SATA 6Gb/s. What would the speeds be for transferring data from one drive to another while both being connected on the same controller?

What speeds would I be looking at if I was transferring data from a mobo connected drive to or from a drive on this controller.

Assume all drives are SATA 6Gb/s. Ignore speed differences from SSD to HDD. Looking more for theoretical speeds between drives on the same controller and mobo connected to controller.

Thanks All.
SacredNut
 
Solution
The HDD would be the limiting, platter drives have difficulty saturating even SATA 2.0 ports (which is half the speed of SATA 3.0); much less saturating 3.0.

In order to test it, you would have to copy from 1 SSD to another to see what sort of bottleneck there might be.

EDIT:

according this article, Seagate claims to have the worlds fastest 6TB platter drive:

http://www.extremetech.com/computing/179972-seagate-unveils-worlds-fastest-6tb-hard-drive-and-it-isnt-filled-with-helium

in the attached PDF, the sustained transfer rate of the drive is stated to be 216MB/s, translating that to bits, it is 1728Mb/s, or 1.7Gb/s, which is just over SATA 1's maximum bandwidth of 1.5GB/s.

chenw

Honorable
The HDD would be the limiting, platter drives have difficulty saturating even SATA 2.0 ports (which is half the speed of SATA 3.0); much less saturating 3.0.

In order to test it, you would have to copy from 1 SSD to another to see what sort of bottleneck there might be.

EDIT:

according this article, Seagate claims to have the worlds fastest 6TB platter drive:

http://www.extremetech.com/computing/179972-seagate-unveils-worlds-fastest-6tb-hard-drive-and-it-isnt-filled-with-helium

in the attached PDF, the sustained transfer rate of the drive is stated to be 216MB/s, translating that to bits, it is 1728Mb/s, or 1.7Gb/s, which is just over SATA 1's maximum bandwidth of 1.5GB/s.
 
Solution