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Thread: PCI-E x1 Bug????????




  1. #1
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    Default PCI-E x1 Bug????????

    My x16 graphic card is working at x1 speed.

    My mobo is ep35c-ds3r.I read that these motherboards got this bug.
    What can i do?
    Should i rma this idiot motherboard?


  2. #2
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    Default Re: PCI-E x1 Bug????????

    Oh the dreaded x1 bug. I've had it too with my old 8600GT cards. Raise the PCI-E frequency to 105 or 110MHz in the BIOS. If it still stays at x1 RMA the video card NOT the mobo. I had two 8600GTs blow and both exhibited this behaviour before they died.
    Pro hardware technician for PC, Laptop and Sound equipment.

  3. #3
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    Default Re: PCI-E x1 Bug????????

    Check the solutions given here. One does include, as already recommended, changing PCI-E frequency.

    http://www.techarp.com/showarticle.aspx?artno=522
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  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: PCI-E x1 Bug????????

    It is the card, not the board for sure!!

    Test your card in another board, or another card in your board and you will see.

    Also, please do be sure that you set "Init First Display" in the Advanced BIOS Features page to PEG1. This is not part of your issue or the solution, just the correct setting you should be using is all

  5. #5
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    Default Re: PCI-E x1 Bug????????

    I did not think of it being a card issue as there are various accounts of motherboards going a bit mental sometimes and exhibiting this issue.

    Lsdmeasap could be right though. His advice of testing your card is a very good idea indeed.

    There is no mention of whiich brand your ATI card is, or if it is a 4850, 4870 or 4890. I do know that there have been several updated BIOS issued to correct problems with my particular 4850 and conflicting device ID's in crossfire mode. Maybe your card manufacturer has an updated BIOS which may help.

    Be very cautious if flashing a card. Be 100% sure it's the right BIOS for the card and definately a BIOS from the same manufacturer. Often different companies alter the circuit board design to their own specification, and flashing an incompatible BIOS can lead to a useless card. Never force a flash, if you get a check sum mismatch, you likely have the wrong bios.

    I would also try re-installing the Catalyst driver package. I notice you are running version 9.5, which I beleave is still a pre-release version. It may be that they are the final 9.5's but try 9.4 or 9.3 to eliminate the possibility of a driver bug.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

  6. #6
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: PCI-E x1 Bug????????

    Agreed!

    Ya Psycho101, I have seen this many times and it is most always the card (99.9%), causes are often poor PCB Design (Choose a different brand/model), Faulty/incompatible BIOS (Board or Card), just a design flaw with certain models, or just a plain old faulty card.

    And sorry I forgot to mention as well, please be sure you are using the latest BIOS for your board too. Guide for flashing your BIOS as well as a link to download the latest is here >>
    http://forums.tweaktown.com/f69/bios...h-guide-27576/

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