Fitted SATA6 card and if anything, it's slower

[englishprep]

(I thought I had posted this but can't now see it so hope this is not a repost).

I fitted a SATA6 16x PCI Express card onto my MB and the figures for my Samsung 830 SSD are quite a bit lower according to both AS SSD and Samsung benchmarks - something like 2/3 of the SATA3 connection on the MB and for some readings, about 1/6! I take it this is because the data has to go through a card which risks slowing it down; obviously, the data is reaching nothing like SATA3 limits. Any point in hanging onto the card at all?

 

[Dereck47]

What is the model of your card? What is the model of your motherboard?

 

[englishprep]

Thanks for the interest. Card: StarTech.com 2 Port SATA 6 Gbps PCI Express SATA Controller Card
Motherboard: FUJITSU D2990-A1 S26361-D2990-A1
SSD: Samsung 830 120GB.

AS SSD benchmark: using SATA3 Motherboard is 485 (224 read/140 write totals) and with SATA6 card is 419 (214 read/106 write totals). Similar picture with Samsung Magician benchmark. Oddly, some read speeds are higher with the SATA6 card but write speeds are down.

 

[Dereck47]

Thanks for the interest. Card: StarTech.com 2 Port SATA 6 Gbps PCI Express SATA Controller Card

Your benchmark results are normal.
That card uses a Marvell 88SE9128 controller which has a data bandwidth of PCIe x1 at 5Gb/s (500MB/s).

You need a card that as a minimum is a PCIe x4. You probably need a x8 card to get the advertised Read/Write speeds of the Samsung 830.

Unfortunately, your motherboard only has 1 x16 slot (which is being used by your graphics card), and 2 x1 slots.

So your performance is as good as it's going to get until you upgrade your motherboard.

AS-SSD uses highly incompressible data to test Read/Write speeds. Highly incompressible data is the hardest type of data for any SSD to Read/Write.

ATTO uses highly compressible data to test Read/Write speeds. Highly compressible data is the easiest type of data for any SSD to Read/Write.
Benchmark your drive with ATTO and you will get slightly better results.

 

[englishprep]

Many thanks!

I'll let sleeping dogs lie (unless you think a faster SSD is going to make a huge difference!)

Thanks for the interest. Card: StarTech.com 2 Port SATA 6 Gbps PCI Express SATA Controller Card

Your benchmark results are normal.
That card uses a Marvell 88SE9128 controller which has a data bandwidth of PCIe x1 at 5Gb/s (500MB/s).

You need a card that as a minimum is a PCIe x4. You probably need a x8 card to get the advertised Read/Write speeds of the Samsung 830.

Unfortunately, your motherboard only has 1 x16 slot (which is being used by your graphics card), and 2 x1 slots.

So your performance is as good as it's going to get until you upgrade your motherboard.

AS-SSD uses highly incompressible data to test Read/Write speeds. Highly incompressible data is the hardest type of data for any SSD to Read/Write.

ATTO uses highly compressible data to test Read/Write speeds. Highly compressible data is the easiest type of data for any SSD to Read/Write.
Benchmark your drive with ATTO and you will get slightly better results.

 

[Dereck47]

Yeah, best to save up for a new motherboard with native 6Gb/s ports.