Will a SATA-3 / SATA-2 combination of drives slow down my SATA-3 SSD?

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michael-95037

Oct 18, 2018
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I have 4 x SATA-3 ports on my new computer. I currently have a 250 GB Samsung 850 EVO SSD plugged into a SATA-3 port. If I plug in a DVD-RW drive into another of the SATA-3 ports, will it slow down my SSD? I thought I heard somewhere that SATA will only operate at the speed of the slowest device (SATA-2 DVD-RW).
 
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That line of thought is likely as an erroneous application of the electrical configurations we had with PATA (IDE) drives which...
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Rogue Leader

Rogue Leader

It's a trap!
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Dec 22, 2014
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Not true at all.

2 GPUs in crossfire or SLI only operate at the speed of the slowest one. Memory will only operate at the speed the slowest one is stable at (if you mix ram). However SATA doesn't care how fast your other drives are.
 
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USAFRet

USAFRet

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Mar 16, 2013
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Not true.
If that were the case, then everyone with an SSD, and an HDD or DVD would be in trouble.
Unless otherwise specified, SATA ports are independent of each other.
 
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karenjoly

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Apr 13, 2018
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That line of thought is likely as an erroneous application of the electrical configurations we had with PATA (IDE) drives which reigned supreme prior to SATA. As a few old dogs will recall, the earlier drive interface for HDD, CD/DVD ROMs and floppy disks was a long IDE cable with two connectors . So a HDD could sit alongside a CD ROM built for much slower speeds. The principle of lowest performer certainly applied there. Then you had the complication of 2 cables , with four drives hooked up to the single bus. Please, never again !

 
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