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HD 7870 Crossfired with Asrock 970 Extreme3

Tags:
  • HD
  • ASrock
  • Crossfire
  • Motherboards
  • Graphics
Last response: in Graphics & Displays
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May 27, 2013 3:56:29 AM

Hello people, a few months ago i bought a Readon HD 7870 OC Edition intending to run it in crossfire after the prices dropped a little, unfortunately it seems that the PCI slots will only run at X16 & X4 in crossfire on my motherboard I was wondering how much of a performance drop that would be over x8 x8, and if my AMD FX-4100 OC'd to 4.5 GHZ would bottleneck it if i did crossfire?

My full system specs are:
MOBO - Asrock 970 Extreme3 - http://www.newegg.com/Product/Product.aspx?Item=N82E168... (Link to motherboard details)

CPU - AMD FX-4100 @ 4.5GHZ
RAM - Kingston 12GB DDR3 Ram
GPU - MSI 7870 2GB OC Edition
PSU - Thermaltake Smartpower 650W

Any help you guys/girls could provide would be greatly appreciated.

More about : 7870 crossfired asrock 970 extreme3

May 27, 2013 4:09:21 AM

i did 16x and 4x with 2 hd 5770

and it worked really good

but the hd 7870 is much faster
so i think there will be a bottleneck from the pcie
before the CPU

-Aadm Ericson
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May 27, 2013 4:17:06 AM

adamdbz said:
i did 16x and 4x with 2 hd 5770

and it worked really good

but the hd 7870 is much faster
so i think there will be a bottleneck from the pcie
before the CPU



-Aadm Ericson


Oh okay, might i ask what kind of motherboard you have?
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May 27, 2013 4:18:57 AM

I have the GA-H77-D3H
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