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x16 PCIE lanes spacing and video card temperatures

Discussion in 'Overclocking & Cooling' started by Sanhime, Sep 24, 2009.

  1. Sanhime

    Sanhime

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    I wasn't sure whether to put this post in video card or motherboard section, since this is about temperatures and cooling, I put it here.

    Most SLI motherboards out there have the PCI-E lanes set up as lanes 1-3-5 (or 2-4-6 in some cases) to accompany double spaced cards, the cards are still back-to-back when you SLI or Tri-SLI. I wonder and worry about the temperatures.

    My current motherboard is EVGA x58 Micro
    http://www.evga.com/products/moreInfo.asp?pn=121-BL-E756-TR&family=Motherboard%20Family

    And I am running two 285 GTX's non-OC.

    And my tower is the cavernous CM ATCS-840.
    http://www.coolermaster-usa.com/product.php?category_id=18&product_id=2870

    I am wondering, would I get real world and practical temperature improvements if I have a motherboard like the ASRock boards that space their x16 PCIE lanes further apart (I've been hearing pretty nice reviews on the ASRock boards too):

    http://www.asrock.com/mb/overview.asp?Model=X58%20Extreme&s=

    x16 PCIE lanes are further apart in 2 and 5 (separated by 2 lanes)

    or

    http://www.asrock.com/mb/overview.asp?Model=X58%20Deluxe&s=

    x16 PCIE lanes are further apart in 1 and 5 (separated by 3 lanes)
     
    Last edited: Sep 24, 2009
  2. Asylum

    Asylum

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    The board slot seperation isnt going to make much difference in temps.
    Its all about your case and how its set up and what type fans you use.
     
    Sanhime says thanks.
  3. Sanhime

    Sanhime

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    I think my case has good air flow.

    This case has great cable management. Most of the cables are hidden so there are few obstructions. I have 2 intakes in the front, one 230mm fan and a 120mm fan sitting in a 5.25" scythe kama bay. The hard drive cage behind the front 230mm has 2 two 120mm fans behind the cage for push-pull. A 120mm intake at the bottom. Two 230mm exhausts on the ceiling (only one is active). A 120mm rear exhaust. And a 120mm exhaust attached outside behind the PCI slots to exhaust heat from the video cards. All fans are Noctua NF-P12s except for the HD cage PCI exhaust.

    But if all the video cards a back-to-back, wouldn't that block much of the air flow of the case. Even the video card fans have like only 1 mm of breathing room.

    *edit*
    I notice you have 2 295s, are they sitting in lanes 1 and 3 for your system? Just wondering.
     
    Last edited: Sep 24, 2009
  4. SonDa5

    SonDa5

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    More space with good air flow seems to be the way to go.
     

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