SATA III vs PCI-Express x4

So I am in need of some Help. I have a GA-890GPA-UD3H and would like to know which would work better in a general setup. Either a SATA III vs PCI-Express x4 ?

Rosewill Xtreme Series RX750-D-B 750W Continuous
Item #: N82E16817182069
Microsoft Windows 7 Ultimate 64-bit
Item #:
Item #: N82E16813128435
VD Burner - Bulk Black SATA Model GH24NS50
Item #: N82E16827136177
Western Digital AV-GP WD-5000AVDS 500GB SATA
Item #: N82E16822136497
Western Digital Caviar Green WD20EARS 2TB 64MB
Western Digital AV-GP WD-1TG (Partioned 292gb,292gb & 345gb)
G.SKILL Ripjaws Series 8GB
Item #: N82E16820231276
SAPPHIRE 100287L Radeon HD 5670
Item #: N82E16814102870
AMD Athlon II X3 435 Rana 2.9GHz Socket AM3 95W Triple-Core
Item #: N82E16819103724
Antec Nine Hundred
Item #: N82E16811129021
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More about sata express
  1. As luck would have it, I finished working on an Intel motherboard base and started working on an AMD motherboard database. According to your motherboards specifications the motherboard's SATA 3.0 6Gb/s ssd controller is integrated into the SB850 Southbridge chipset. No problems there.

    The two PCI-e x16 slots get interesting:

    1 x PCI Express x16 slot, running at x16 (PCIEX16)

    1 x PCI Express x16 slot, running at x8 (PCIEX8)

    That sounds real good except when a device is intalled in the 8 channel slot, the 16 channel slot (video card) is reduced to 8 channels. Here's what Gigabyte has to say about it:

    "For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot. The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When PCIEX8 is populated with a PCI Express graphics card, the PCIEX16 slot will operate at up to x8 mode."

    In plain English it means the video card will take a performance hit. It's not that bad. There were several tests conducted a while back indicating the video card performance will be reduced somewhere between 5% and 8%. The exact percentage depends on configuration. A user will not notice the performance reduction.

    You mentioned PCI-e x4 solid state drives. Although they are fast, they also happen to be expensive. What will you be doing that requires a PCI-e x4 based ssd?
  2. After reading from several sources I realized that the ssd came in two different forms so I was just wondering which one would be less prone to failure. I personally use it for video editing /CAD and my step-kids enjoy playing online multi-player games.
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