GTX TITAN 2-way SLI with PCIE-2.0 (2 x 8x)

Discussion in 'Videocards - NVIDIA GeForce' started by jez_uk1, Feb 22, 2013.

  1. jez_uk1

    jez_uk1 Active Member

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    I'm considering an upgrade for my 3-screen rig, and 2-way TITAN looks very appealing. It would be hooked up to my Z68 mobo which is PCI-E 2.0, in a 2 x 8 lane configuration. Would this be a limiting factor? I'm guessing not because people are running 3-way TITAN in reviews in a 3 x 8x configuration (albeit PCI-E 3.0). I don't currently consider the bus bandwidth to be limiting with the 680 SLI, those GPUs are working as hard as they can without any restrictions. What do you guys think?
     
  2. ZTylerDurden

    ZTylerDurden New Member

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  3. jez_uk1

    jez_uk1 Active Member

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    Interestingly enough some of the results in 2 and 3-way on the 680 are better with PCI-E 2.0. Where PCI-E 3.0 is better it's only very marginal. I think this reassures me to a certain extent. Certainly I think my Z68 can survive until Haswell arrives.
     
    Last edited: Feb 22, 2013
  4. Agent-A01

    Agent-A01 Ancient Guru

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    A titan is 50% faster than a 680... im guessing there will be a decent bottleneck there.
     

  5. 3dPlayer

    3dPlayer Banned

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    50%?On TPU i see 30% in 1600p.
     
  6. Gripen90

    Gripen90 Master Guru

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  7. Fox2232

    Fox2232 Ancient Guru

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    On Titan:
    Running three screens in 2-way SLi Will be limited by PCIe 2.0 x8/x8.
    I guess up to 10% up performance will be lost compared to PCIe 2.0 x16/x16. and then maybe another 2% from PCIe 3.0 x16.
    So, total is about 12% down. 3-Way SLi would see higher impact on Titan.
     
  8. sykozis

    sykozis Ancient Guru

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    PCIe 3.0 x8 has the same bandwidth as PCIe 2.0 x16
     
  9. ---TK---

    ---TK--- Ancient Guru

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    I think 8x pcie 2.0 may be a bottleneck because it is much faster than a 680. pci e 8x 2.0 isnt really a bottleneck for sli 680, its when you go tri and quad sli high end pci e 3.0 really shines
     
  10. angmar

    angmar Maha Guru

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    If you have enough money to spend 2000 dollars on graphics cards why don't you just spend the measily 130 dollars more and get a pci 3.0 motherboard


    .....
     

  11. (.)(.)

    (.)(.) Banned

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    Or a sign that says "My girlfriends ugly, but my new rig'll make you jealous."

    Sorry, that was uncalled for. I should probably leave now.
     
  12. yasamoka

    yasamoka Ancient Guru

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    Not too related. Depends on what data is being sent to and from the card. Higher FPS does not necessarily mean the card is shifting more data on the PCI-e bus.
     

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