7900gs overclock

Discussion in 'Videocards - NVIDIA GeForce' started by illimite, Dec 1, 2006.

  1. illimite

    illimite Member

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    GPU:
    Leadtek 7900GS-TDH 256
    Hi there, i have a 7900gs with stock speeds of 450mhz - 1.32ghz. I have managed to overclock it to 603mhz - 1.57ghz stable and am wondering if this is pushing it a bit too far? everything works good at these settings and it doesnt seem to get to hot. the card has stock cooling and 256mb memory.

    Should i take it further ?
     
  2. chrismeyer

    chrismeyer Maha Guru

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    GPU:
    BFG 7950 GT 512meg
    wat r ur temps at those speeds casue if there not that high then u may beable to get more out of it. also upgrading ur cooler wouldnt be a bad idea and then i may get even more
     
  3. illimite

    illimite Member

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    GPU:
    Leadtek 7900GS-TDH 256
    My Temps are 49c-51c idle, im not too sure how too see the temps when the gpu is on full load. Is there an app i can use that puts 100% load on the gpu so i can see what the temp rises too?
     
  4. daveid

    daveid Ancient Guru

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    GPU:
    8600GTS + 7300GT DDR3 / 7600GS

  5. CanadianTSi

    CanadianTSi Member

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    GPU:
    7900gs (675/886)
    Very nice core clocks for Stock voltage.

    Are you sure thats the max for the memory? Mine does 1780 on stock voltage.
     
  6. RossCorp

    RossCorp Master Guru

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    GPU:
    EVGA 570GTX SLI
    Hi, just for comparison my max clocks are 619/1780. My temps are (+/- a degree) 43c idle and 60c load. That's with a vf900. I wouldn't recommend pushing your card past 600mhz without some sort of aftermarket cooling! The ram on most, if not all, 7900GS' should reach 1600mhz+.

    CanadianTSi, did you voltmod your card? If so, please fill me in, as I am wanting to juice up my card a bit as well :)
     
  7. CanadianTSi

    CanadianTSi Member

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    GPU:
    7900gs (675/886)
    Yah I volt modded the Core to 1.4v and it run's rock solid stable at 685mhz.

    Temps are similar to yours with an Artic Silencer 6.

    I can almost get away with 700 benchable, I tried upping the voltage to 1.45v and that didn't really help much so I just decided to leave it at 1.4v and be happy with my results.
     
  8. Cheeze

    Cheeze Member

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    GPU:
    Sapphire 7970 3GB
    nice oc canadianTSI, can you point out the instruction to u'r volt mod? thx.
     
  9. CanadianTSi

    CanadianTSi Member

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    GPU:
    7900gs (675/886)
    Simply connect the 2 points on the card using a conductive pen or something similar.

    Red is 0.05 volts over stock, Yellow is 0.1, and Purple is 0.2.

    [​IMG]
     
  10. chrismeyer

    chrismeyer Maha Guru

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    GPU:
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    i wonder if u were to get a nice water cooling system on ur gpu and ram u could maybe get even more out of ur card
     

  11. Cheeze

    Cheeze Member

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    GPU:
    Sapphire 7970 3GB
    what's the default volt?
     
  12. CanadianTSi

    CanadianTSi Member

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    GPU:
    7900gs (675/886)

    Default is 1.2 volts
     
  13. RossCorp

    RossCorp Master Guru

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    GPU:
    EVGA 570GTX SLI
    Well, I've got a Conductive Ink pen on the way, hopefully it will be here tomorrow morning! I've got a question though...the default voltage is 1.3v on the core with my XFX 7900 GS. I've confirmed that with my multimeter. So when I do the voltmod, is it still the same with the .05v, .1 and .2 connections, or more simply, if someone did the 1.2v - 1.4v mod, and I did the SAME mod, would mine be 1.3v - 1.5v, or would it still give me 1.4v?

    Any insight is appreciated, as I'd like an idea instead of just diving in and testing it myself ;)
     
  14. CanadianTSi

    CanadianTSi Member

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    GPU:
    7900gs (675/886)
    Weird that your card has 1.3v default. I would assume that they would still be the same so if you did the .2v mod you would end up with 1.5vgpu.
     

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