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AMD Crossfire setup questions (PCI express)

Tags:
  • Graphics
  • PCI Express
  • AMD
  • Sapphire
  • Crossfire
Last response: in Graphics & Displays
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October 13, 2014 1:03:17 AM

I have 1 sapphire 7850 and one sapphire 7870. They are in a crossfire setup in a GIGABYTE GA-Z77-DS3H motherboard. According to: http://www.newegg.com/Product/Product.aspx?Item=N82E168..., I have one PCI express 3.0x16 slot and one PCI express 2.0x16 slot.

In the catalyst control center (I have the latest version) under hardware it shows that I have my main card which is the 7750 at a max bus setting of 3.0x16. My second card shows a max bus setting of 2.0x4.

Is this an issue that will hinder the performance of my cards, is this correctable, or is this normal for my setup? My cpu is a core i5 3570k overclocked to 3.8 GHz. My PSU I think is 800 watts. I can provide more details on that if necessary. I assumed that the second card max bus setting should read at 2.0x16 but I am in the early learning stage.

Any information provided is greatly appreciated. I have been using this site to educate myself for some time now but this is my first post. Thank again.

More about : amd crossfire setup questions pci express

a c 147 À AMD
October 13, 2014 1:06:19 AM

2.0 x 4 should be OK on 7850's.
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