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AMD 7870 Crossfire low fps ?

Jacknif
By Jacknif
in Graphics Cards
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Go to solution Solved by grayperview,

I Have 2x7970's in crossfire, Far Cry 3 and BF3 pretty much double their fps in crossfire, Skyrim on the other hand only has about a 40% increase in fps...

 

do some actual benchmarks and show results, might help find the problem....could very well be your CPU is causing a bottleneck, even so you should see an increase.

 

http://www.gigabyte.com/products/product-page.aspx?pid=4122#sp

 

  1. Support for AMD CrossFireX™ technology (PCIEX16 and PCIEX4)

I think this might be the problem, not enough PCIE lanes to get the maximum out of your cards...

Posted

Hey !

 

My brother just got a new card (the same as mine) and i wanted to test in Crossfire before just for the lolz..but the result are very disappointing. It's even worse than with 1 GPU. <_<

 

I think that it's because of my CPU : AMD Phenom II X4 3.2gh/z... Bottleneck over 900 :angry:

 

What does you guys think ? I had the latest GPU Driver.

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Game needs to support it

Motherboard needs to support it

PSU needs to support it

Needs to be set up in CCC

 

If you are missing 1 of these then yeah you will get shit CF results

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  • Author

Game needs to support it

Motherboard needs to support it

PSU needs to support it

Needs to be set up in CCC

 

If you are missing 1 of these then yeah you will get shit CF results

 

My motherboard have 2 GPU slots, so i guess it's okay.

I tested it on Far Cry 3, Battlefield 3 and Skyrim.

I have a 600watts PSU Cooler Master (kind of cheap)

Setup in CCC ?

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  • Solution

I Have 2x7970's in crossfire, Far Cry 3 and BF3 pretty much double their fps in crossfire, Skyrim on the other hand only has about a 40% increase in fps...

 

do some actual benchmarks and show results, might help find the problem....could very well be your CPU is causing a bottleneck, even so you should see an increase.

 

http://www.gigabyte.com/products/product-page.aspx?pid=4122#sp

 

  1. Support for AMD CrossFireX™ technology (PCIEX16 and PCIEX4)

I think this might be the problem, not enough PCIE lanes to get the maximum out of your cards...

----Ryzen R9 5900X----X570 Aorus elite----Vetroo V5----240GB Kingston HyperX 3k----Samsung 250GB EVO840----512GB Kingston Nvme----3TB Seagate----4TB Western Digital Green----8TB Seagate----32GB Patriot Viper 4 3200Mhz CL 16 ----Power Color Red dragon 5700XT----Fractal Design R4 Black Pearl ----Corsair RM850w----

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I Have 2x7970's in crossfire, Far Cry 3 and BF3 pretty much double their fps in crossfire, Skyrim on the other hand only has about a 40% increase in fps...

 

do some actual benchmarks and show results, might help find the problem....could very well be your CPU is causing a bottleneck, even so you should see an increase.

 

http://www.gigabyte.com/products/product-page.aspx?pid=4122#sp

 

  1. Support for AMD CrossFireX™ technology (PCIEX16 and PCIEX4)

I think this might be the problem, not enough PCIE lanes to get the maximum out of your cards...

 

Oooh... okay i get it. thank you.

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