Sata 3 pci card for SSD on z600

[Samtastico]

I have recently installed a Samsung 850 Evo 250gb SSD into my Z600. I am aware that connecting directly to the motherboard will only allow 3 GB's speed. If I install a sata 3 PCIe card will that allow the PCIe 2 speeds of 5 GB/s to be reached by my SSD?

[DGroves]

no, most sata upgrade cards are pci-e x1 that can only do "UP TO" 5GBps they almost never can sustain 5GBps speeds

also as you add drives to the controller the speeds go down due to shared bandwidth

if you must use a sata pci-e card, buy one based on the marvel 9230 chipset most of these cards support a pci-e x2 interface

and as such will give true 6GBps speeds sustained, and around 750/800GBps if using a SSD

only downside is these speeds are for ONE DRIVE, if you use 2 drives or more it will also decrease in max speeds

using a pci-e x4 based SATA ssd like the samsung sm951 is the fastest  way  to gain overall system speed

SDH recomends the kingston predator SSD which i have no experence with as i have the sm951's on several systems

i would be currious as to the max speeds between the two, and also the current pricing

i have found that usually a 10% or less diffrence between drive speeds is not really noticeable except for certain specific tasks. it may be that the slower drive is actually the better value if the price is lower and the speeds are within or less than 10%

if max ssd speed is required, a SAS/SATA pci-e raid or HOST Bus Card is required such as Adaptec 56xx series or the LSI 9211-8i HBA type cards

[Samtastico]

Do you have any examples. I know this might not be the best thing but I'm looking for a cheap as possible at the moment so probably ebay etc.
I only have one SSD probably won't get a 2nd or 3rd for a while.

[DGroves]

https://www.ebay.com/itm/New-Marvell9230-Chipset-SATA-6Gbps-PCI-Express-RAID-Controller-Card-Green/3...

https://www.ebay.com/itm/LSI-9211-4i-HBA-IT-Mode-4-Ports-SATA-SAS-6Gb-s-PCIe-RAID-w-Cable-Bracket/13...

note that the LSI 9211 cards can be flashed as IT or IR, for your use you want "IT" mode which is non raid

EDIT:

and since the prices are usually close for either card i strongly recomend the LSI 9211 based cards over the marvell 9230

[Samtastico]

And if I was looking for a second hand option that was stable and cheap as I see a lot of cheap pci-e sata boards around.

[Samtastico]

And if I was looking for a second hand option that was stable and cheap what would you all suggest?
I see a lot of cheap pci-e sata boards around.

[SDH]

You really should look at the LSI card DGroves specified for you.... high quality and second hand, stable and cheap.

[Samtastico]

The other option would be to RAID 0 two SSDs increasing performance that way.

[DGroves]

no, raiding 2 midrange or high performance SSD's on a  sata 3.0 bus is pointless

as one of those ssd'd can saturate the sata 3.0 bus transfer speeds

i highly recomend you take the time to read some of the technical reviews on SSD vs mech drive arrays on sata 3/6 connection

as it seems you are trying to get better performance without really having any real background in this

[Samtastico]

I have come to the same conclusion and after running some test the SSD even at SATA II speeds is not the bottleneck as I am never maxing out the read / write speeds. 
In short a faster CPU would have more benifit when rendering in adobe premier pro.