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Thread: Peg buffer,link,latency,root etc for nvidia sli on 975 chipset?

  1. #1
    Xtreme Member
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    Peg buffer,link,latency,root etc for nvidia sli on 975 chipset?

    Im using a Asus P5WDG2 WS Professional motherboard. and 2 7900gtx video cards in sli mode with the moded driver it works great, every know and then i do see some video drop out while playing oblivion 1/10th of a second black screen then back to normal. i started playing with the following settings in bios and it SEEMS to be making a difference but i was wondering if any of you gurus really knew what these settings do and what they shoud be set at for nvidia cards on a 975 chipset. here are the settings in bios.

    Peg Buffer Length: auto, long, short

    Link Latency: Auto, slow, normal

    Peg Root Control: Auto, Disbable, Enable

    Peg Link Mode: Auto, slow, normal, fast, faster

    Pci Express Slot Power: Auto, Light, Normal, Heavy, Heavier.

    Leaving these settings to auto do NOT seem to be whats best for an Nvidia SLI configuration but i have no imperical evidience to back that up.
    Thanks
    Lee

    BTW One of these settings seems to have made a big difference in my gpu temps. (for the better im running about 64c not as compared to 74c when everything was set to auto and i ran a 3d mark 06 test after the bios settings change and the difference was 75 points slower.. i believe thats within the margin of error for 3dmark 06 i ran an 11,574.
    Thanks Lee
    Last edited by lross78550; 08-28-2006 at 01:52 PM.

  2. #2
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    What driver are you using? Link pls.
    [-AMD Opteron 165 @ 3.0Ghz-]
    [-DFI LAN Party UT uNF4 Ultra-D-]
    [-AData 4GB (4x1GB) DDR484-]
    [-eVGA Geforce 8800GTS 640MB 320-Bit-]
    [-Creative Sound Blaster X-Fi XtremeMusic-]
    [-Seagate 160GB & 250GB 16MB Cache SATA300-]
    [-OCZ GameXStream OCZ700GXSSLI-]
    [-DELL 2005FPW LCD Monitor via DVI-D- & Westinghouse 22w3 LCD Monitor via DVI-D]
    [-Windows Vista Ultimate x64-]

  3. #3
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    http://www.xtremesystems.org/forums/...d.php?t=106212
    thanks lee

    p.s. look at your private message box.
    Lee

  4. #4
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    bump

  5. #5
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    last bump... no one out there is running nvidia sli on a 975 chipset motherboard and wants to figure out the correct pci-e setttings for our videocards???? Anyone??
    Lee

  6. #6
    Memory Addict
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    well i just tried 2x256MB BFG 7800GTX SLI on my P5W DH

    i had the PEG links as AUTO, Normal, AUTO, Normal, Heavy
    ---

  7. #7
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    Quote Originally Posted by eva2000
    well i just tried 2x256MB BFG 7800GTX SLI on my P5W DH

    i had the PEG links as AUTO, Normal, AUTO, Normal, Heavy
    and whats the results ?
    i7 920, EX58-UD5, 6GB Corsair 1600Mhz, 8344ELP + 4x146GB SAS, 2x640GB, 27" DELL, 4870, P182 liquid cooled, Antec Quattro 1kW, X-Fi Prelude + Z5500, Razer Mamba, G15

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