Can a PCI-E / SATA-III adapter for SATA-III SSD give improved performance, or be bottlenecked by the SSD's SATA-III interface?

[Brassicus]

Sorry about the long title!

I have recently done a complete PC upgrade and purchased the Samsung 850 3D-NAND (250gb) 2.5" SSD. This is massively faster than my previous HDD (which I have kept as additional/main storage). If I had been aware of the option to use a PCI-E SSD, I would have done as I have since realised that they are considerably faster.

So I have been looking at alternatives, working with what I have. I have discovered that you can get PCI-E riser cards (adapters) that you can connect directly to the SATA-III data port of the SSD. My question is, is there any point in doing this? Will the SATA-III interface on the SSD act as a bottleneck to the PCI-E and limit me to 'only' 6Gb/s?

I haven't done any major research on this, but the following (or something like it) seems to be what I want to accomplish: https://www.megamac.com/products/apricorn-velocity-solo-x1?utm_medium=cpc&utm_source=googlepla&variant=3449148293&gclid=Cj0KEQjw6O-9BRDjhYXH2bOb8Z4BEiQAWRdukwyV79U3zG6t-gm5K66aiWFxLvMHOq7WtPMyu8Nx4zkaApZf8P8HAQ

*EDIT* - Ok, I know the above link refers to a Mac, and I have a PC, but this is purely to give a visible pointer to what I want to achieve.

Thank you!

 

[Suztera]

You won't see any benefit, the 850 EVO or PRO does not exceed the 6Gb/s bandwidth of the SATA 3.

 

[Brassicus]

You won't see any benefit, the 850 EVO or PRO does not exceed the 6Gb/s bandwidth of the SATA 3.

Thanks, that answers my question perfectly!