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Thread: 75% FPS loss with GTX280 SLi over 8800 SLi

  1. #1
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    75% FPS loss with GTX280 SLi over 8800 SLi

    Hey everyone- I'm having a real problem with my new 280's Here is my basic computer set up

    1000 Watt Turbo cool.
    6800x conroe
    P5N32-E SLi Mobo
    2 gigs of memeory
    vista 32 bit ultimate
    2 10,000 RPM raptors
    1 360GB HD
    2 Optial drives (one unplugged for now)

    Problems:
    • Will sometimes freeze at booting 'ASUS' screen stays up.
    • Age of Conan and WoW have lost a TON of FPS
    • My secondary card didn't exactly seat right, but fit in well enough to work when screwed in.


    I'm thinking either - PSU, BIOS flash, or a new mobo altogether.

    Any ideas?

  2. #2
    Xtreme Addict
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    Have you tried the cards individually yet?

  3. #3
    Xtreme Member
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    Try to increase PCIE/SATA Voltage to 1.6 - 1.65V in BIOS. Check that both cards runs in at least 8x PCIEx mode by running GPU-Z
    ASUS P8Z68-V PRO B3 + Intel i5-2500k @ 5.0 GHz + Noctua NH-D14
    8GB DDR3 Corsair Vengeance XMP (kit 2x 4GB) 1866MHz / Gainward Geforce GTX470 SLI watercooled
    120GB SSD Kingston HyperX (games) / 1x 30GB SSD OCZ Vertex Turbo (system)
    22" LG IPS226V-PN / PSU Fortron AURUM GOLD 700(W) / Cooler Master HAF Tower RC-932

  4. #4
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    Both cards definitely work- I didn't not check the performence of the Non SLi... It still has the boot problem with only one card hooked up.

    I will definitely try the voltage- that sounds like a good solution. What do yall think about a bios update?

  5. #5
    Xtreme Member
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    i've never ever seen a graphics card that needed a voltage adjustment to work correctly out of the box

    that is just weird

  6. #6
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    well when i got two cards i mostly needed higher voltage for PCIE, on NVIDIA or Intel mobo, with different PSUs. When overclocked CPU especially.
    ASUS P8Z68-V PRO B3 + Intel i5-2500k @ 5.0 GHz + Noctua NH-D14
    8GB DDR3 Corsair Vengeance XMP (kit 2x 4GB) 1866MHz / Gainward Geforce GTX470 SLI watercooled
    120GB SSD Kingston HyperX (games) / 1x 30GB SSD OCZ Vertex Turbo (system)
    22" LG IPS226V-PN / PSU Fortron AURUM GOLD 700(W) / Cooler Master HAF Tower RC-932

  7. #7
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    The cards came OC'd =D, I'm going home to try it right now

  8. #8
    Live Long And Overclock
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    Your motherboard is not something I would use with two high end PCI-E 2.0 cards.

    Perkam

  9. #9
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    That's what I was afraid of,

    That and I'm running 16x on both cards
    and I can only change the
    CPU
    FSB
    NB
    SB

    Voltages ... :/

    Any other suggestions?

    Is there another Mobo with this chipset I could use?

  10. #10
    Live Long And Overclock
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    Come, Luke !! To the PCI-E 2.0 side of the force

    http://www.newegg.com/Product/Produc...82E16813188026

    Perkam

  11. #11
    I am Xtreme zanzabar's Avatar
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    that board sux, if u want to get a juck chipset that will die on u, get the 780i FTW
    http://www.newegg.com/Product/Produc...Tpk=780i%2bftw

    the 8phase power should make it a lot better, but no matter what u do u wont get a long lasting board
    Last edited by zanzabar; 08-01-2008 at 02:10 PM.
    5930k, R5E, samsung 8GBx4 d-die, vega 56, wd gold 8TB, wd 4TB red, 2TB raid1 wd blue 5400
    samsung 840 evo 500GB, HP EX 1TB NVME , CM690II, swiftech h220, corsair 750hxi

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