Well you're wrong in two ways.
First, I wouldn't use a x1 controller card I purchased a PCIE x 2 card.
Second, I would NOT plug in two hard drives into the same controller like you did. Why the hell would I cut the bandwidth in half???? Defeats the whole purpose. Not very smart.
As cheap as controllers are and as many PCI slots there are, there is no need to plug any two devices into a controller card.
Run your benchmarks with a PCIE x 2 controller card with ONE SATA III SSD plugged into it. Then get back to me.
If you want to learn, I suggest that you at least try to understand the concepts laid out in front of you... You can start by learning the terminology, then you can learn to read and comprehend an entire post, starting with this one. And don't tell me you've read every word, because if you did, you would understand that I would NEVER
use an add-in controller card. I'll get to that later just to see if you are reading...
First things first, there is no such thing as an x2 card. x1 refers to the PCI Express x1 slot on your motherboard. The 'x' means 'times' (as in 2x4 =
while the number refers to the number of PCI Express connector 'sets' on the motherboard for your add-in card, and they only come in 4 flavors: x1, x4, x8, and x16. A x1 card has one set of power and data connectors in the PCI Express slot on your motherboard, a x4 card has 4 sets of power and data connectors in the PCI Express slot on your motherboard & so on.
Secondly, don't ASSUme, all you're really doing is making an ASS out of yoU. My previous comments alone would give you a very strong indication that my drives are connected to the motherboard connectors. Having a 990FX chipset, I have Six native SATA III connectors to use, so your thoughts & ideas on my connections are totally f'd up.
I'll now post the full image of the SATA III RAID-0 setup.
You'll notice that ATTO shows the RAID array surpassing 900MB/sec. Yet AS-SSD is within 5% of the real-world file transfer rate
This means, you can connect two Vertex 3 SSD's to the two SATA III connectors on your x1 controller card, and still not surpass the 500MB/sec limitation (in real-world transfer rates) of the x1 PCI Express slot. It further means, that you never needed a SATA III controller card, that as I told you early on, you can use the Motherboard connectors. Each motherboard SATA II connector has a max transfer rate of about 300MB/sec after overhead, & with 2 SSD's connected & operating simultaneously (as in a RAID-0 setup), the integrated motherboard SATA II connectors have a combined 600MB/sec upper limit.
Now, my RAID arrays in both instances are connected to 990FX chipset's integrated SATA III controller which has 6 lanes capable of a combined 3.25GB per second transfer rate. In the case of the SATA II test, it's simply a matter of switching BIOS to SATA II mode. Though this image is from a previous install when the drives were operating a little better, you can see similar transfer rates at SATA II, but notice ATTO only reaches about 530MB/sec.
At this point, I don't care if you waste all your money on stuff you don't need... that's your decision to make, but it's still a decision I hate seeing & committing. Yes, I've been guilty of this myself. However, there's one place I'll never waste money, or rather one thing I'll not waste money on, that being add-in controller cards. Intel & AMD both have outstanding integrated SATA controllers. They're so good in fact that you have to pay more than the cost of a decent new motherboard to get an add-in controller that is better than what Intel & AMD already have in their chipset. For a RAID controller that will get you a measurable increase over the integrated controllers (as in more than 1 or 2% increase), you'll have to spend $300+ & get an PCI-E x8 hardware (on-card processor) based RAID controller card. This is one of the reasons that you won't find a RAID card in Maximum PC's Best of the Best hardware list... But if they did have one, it would be this $665 one: http://www.newegg.com/Product/Product.a ... 6816118160
And with that, I wash my hands of this thread. If you want to learn, I will help you where I can. But if you want to come here & throw around a bunch of B/S & ignore what has already been answered, well I won't have any more part of it.