Tri-GPU CrossFireX Gaming

Our final set of GPU tests are a little more on the esoteric side, using a tri-GPU setup with a HD5970 (dual GPU) and a HD5870 in tandem.  While these cards are not necessarily the newest, they do provide some interesting results – particularly when we have memory accesses being diverted to multiple GPUs (or even to multiple GPUs on the same PCB).  The 5970 GPUs are clocked at 800/1000, with the 5870 at 1000/1250.

Dirt 3:

Dirt 3 on HD 5970 + HD 5870 (3x CFX)

In minimum FPS rates, Dirt 3 again prefers the larger memory configuration.

Bioshock Infinite:

Bioshock Infinite on HD 5970 + HD 5870 (3x CFX)

Tomb Raider:

Tomb Raider on HD 5970 + HD 5870 (3x CFX)

TR on the other hand preferred the smaller memory configuration by a sizeable margin in our 3x CFX test.

Sleeping Dogs

Sleeping Dogs on HD 5970 + HD 5870 (3x CFX)

Single dGPU Gaming CPU Real World
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  • grocep@yahoo.com - Sunday, December 15, 2013 - link

    Intel rocks!
  • WaltC - Monday, December 16, 2013 - link

    Interesting article....you mention "z-height"--what is that? Don't you mean Y-height? x=horizontal, y=vertical, z=depth...
  • Simplex - Monday, December 16, 2013 - link

    When will you test memory speed vs BF4 performance?
  • celestialgrave - Monday, December 16, 2013 - link

    So I would assume the benchmarks that show a clear hit going from 2x8gb to 4x8gb is more of an issue of the additional sticks vs the additional memory amount, so going from 2x8gb to 2x16gb wouldn't necessary see the same hit as the 4x8gb kit did?
  • Popskalius - Sunday, February 23, 2014 - link

    do u guys overclock your ram?
    how about remove the brand's plastic covering so they're not too tall?
  • da.Boss - Tuesday, September 20, 2016 - link

    I have the Asus P8h67-M Pro mother board with 2x8 corsair vengeance pro ram, i can't find the xmp option can anybody help

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