Solved Sata3 or PCIe x16

[Matts1]

I was looking at buying a new computer (i5 760, 4GB RAM, etc.) and I came across a problem. I am getting a sapphire ATI radeon 5770, a 60GB OCZ vertex II for a system drive, and 2 1TB 7200RPM SATA3 (6GB/s) drives for data. The problem is that the motherboard supports USB3, SATA3, and PCIex16, but it says (or at least it looks like it; can someone please confirm) that you have a choice of one of those. I won't be using USB3, but either my sata3 drives will turn back into sata2, or my PCIex16 lane will turn into a x8 lane. Which would be a better idea in terms of performance?
Also, the graphics card will be attatched through HDMI (but I will use seperate speakers) to a screen at 1920 x 1080.
So basically, do the hard drives lose speed going to sata2, does the graphics card lose speed if it loses the bandwidth, and which loses more speed (taking into consideration that the hard drives will be a data drive, with an SSD for system)?

 

[1Bowtie]

Your trying to confuse the issue, keep it simple. It says the motherboard supports USB3, SATA3, and PCIx16, first USB3 is for portable devices (which there are not alot of) but it's capable, there is really no speed lose that you can tell between Sata2, Sata3, it's mileseconds, PCIx16 is for graphic cards which can never use all the bandwidth it puts out. That is my simple explanation of the three, there all there if needed so go for it. Hope this helps.

 

[Zepher]

You probably won't notice a speed issue between the settings, but if you choose that board, I would test the drives in SATA3 and SATA2 to see if you notice a difference, as well as see if the graphics card is slower at 8x.

 

[paulkingston]

i will go for PCI e bus because it help to get more speed and works with more efficiency

 

[Layback Bear]

My understanding is. PCI Express is for your video card. Install you card there. USB and SATE has nothing to do with it. Sata 3 and Usb 3 are backward capable to 2.0 if the proper connectors and cables are used. Sata/Usb 3 are only faster if hooked up to something that is compliant for the use of them. When I say faster I mean it has to be where you can see the deference. Example a SSD hooked to Sata 3 is going to fly compared to HHD hooker to a Sata 2.

 

[Zepher]

My understanding is. PCI Express is for your video card. Install you card there. USB and SATE has nothing to do with it. Sata 3 and Usb 3 are backward capable to 2.0 if the proper connectors and cables are used. Sata/Usb 3 are only faster if hooked up to something that is compliant for the use of them. When I say faster I mean it has to be where you can see the deference. Example a SSD hooked to Sata 3 is going to fly compared to HHD hooker to a Sata 2.

that isn't the issue at hand. The issue is that on some newer motherboards, the PCI lanes that communicate between the various components can be split and shared.
He is wondering if sharing the PCI lanes will impact his Hard disks or graphics speed.

 

[Layback Bear]

My miss understanding of the OP question. To the best I know, when you install you video card into the proper slot it will not upset USB 2 or 3, Sata 2 or 3 other then the fact they might need to go back and use the same memory and cpu. If you have the proper amount of memory it will handle it. Question because I could be missing the question. Where else would you put the video card other than PCI Express x 16 and why. If it uses system resources so be it. I know of no place to install a video card that it will not use system resources. Will it slow other things down. Not if the computer has proper resources. Every thing you use in a computer uses resources. If by chance you use more than the system has everything is effected. I still might be missing the whole question. I'm sorry and I will shut up.

 

[Matts1]

Thanks guys. I guess I'll put the HDDs in sataII ports then (that should work, right?).
Also, layback bear. The problem is that if I install it into the x16 slot and the HDDs into the sataIII slots, the x16 will turn into a x8.

 

[Zepher]

Thanks guys. I guess I'll put the HDDs in sataII ports then (that should work, right?).
Also, layback bear. The problem is that if I install it into the x16 slot and the HDDs into the sataIII slots, the x16 will turn into a x8.

No, you have a choice in the BIOS, you can use the Sata3 ports while the PCIe is set to 16x, you just won't get the full 100% speed of SATA 3, but you probably wouldn't get it anyways with the current drives.

 

[Matts1]

In that case, I'll definitely be getting the p55a-ud3r, and not the p55-ud3r. Thanks