GTX 460 voltage bios mod

Discussion in 'Video Cards and Graphics' started by SickBeast, Jan 9, 2011.

  1. SickBeast

    SickBeast Lifer

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    I just managed to hit 950mhz on my GTX 460 core. I can even hit 1ghz, but it's not completely stable. I'm running my vcore at 1.15v. I unlocked the voltage in my bios so that I can run up to 1.215v on the core. Here is a guide on how to do it:

    http://forums.guru3d.com/showthread.php?p=3839831

    Please note that you may damage your card in doing this. I do not take responsibility for what you do to your own hardware.
     
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  3. shangshang

    shangshang Senior member

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    thanks for the info.

    I can hit 850 Mhz without BIOS mod. Hmm i'm wondering if it's even worth the trouble to mod the bios to get another 50-100 Mhz? thinking...
     
  4. SickBeast

    SickBeast Lifer

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    Well, I was hitting 925mhz without the mod at 1.087v, so it didn't give me much extra. I just figure that the card is so cheap and my temps are good, so why not. Mine seems to have hit a wall at 950. 965mhz isn't stable.
     
  5. happy medium

    happy medium Lifer

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    Nice!, Does it run real hot or loud?
     
  6. Idontcare

    Idontcare Elite Member

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    It amazes me the gap between the air-cooling options for CPU's versus those for GPU's.

    I can bolt a 6" tall tower HSF onto my CPU that dissipates maybe 160W fully OC'ed but the best retail air-cooling I can do for my 200W OC'ed GPU is a HSF that is maybe 1" tall.

    Imagine what we could do if the after-market HSF options expanded to include the equivalent of Tuniq Towers and Thermax Eclipse II.

    Instead we get the choice between crappy tiny GPU HSF's or jumping all the way up to $300-$500 watercooling.

    (and yes I understand that clearance and PCIe spacing is the culprit here, just saying it would be nice if this needless bottleneck in air-cooling were engineered out of the equation as has been done with CPU's)
     
  7. happy medium

    happy medium Lifer

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    75$ for 250 watts of quiet cooling.....:)

    http://www.arctic.ac/en/p/cooling/vga/18/accelero-xtreme-plus.html?c=2182
     
  8. Idontcare

    Idontcare Elite Member

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    That's my point though, they can get that out of a 2.2" tall HSF.

    Imagine what we'd be playing with if they had the luxury of the height budget that CPU HSF's are given?

    The thermal dissipation would be even better (those single-card dual-gpu setups) and the noise levels even lower.
     
  9. happy medium

    happy medium Lifer

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    Well, mabe the cpu coolers should be smaller. :D

    I'm no math genius but the total area of a 12 inch long cooler @ 2.5 inches tall, 6 inches wide vs a Tuniq cpu cooler should not be much different in overall size.:confused:

    Of coarse the we know the shape must be different for motherboard/case reasons.
     
  10. Idontcare

    Idontcare Elite Member

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  11. happy medium

    happy medium Lifer

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    Are we gonna see a nice little mini review? :)
    Now if you just grew a set and used the votage hack and went for 1000 core, I'd find a whole new respect for you.

    J/K man :cool: but you should try it. With that cooling 1.2v is a given at good temps.
     
  12. SickBeast

    SickBeast Lifer

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    No, my temps are good. They are pretty much the same as they were before.
     
  13. happy medium

    happy medium Lifer

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    You have a cyclone cooler right? That thing is nice.:thumbsup:
     
  14. Idontcare

    Idontcare Elite Member

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    Beast, if I do the bios mod will I be able to use Afterburner to OC my 460 to higher voltages?
     
  15. SickBeast

    SickBeast Lifer

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    Yep. It works beautifully. :thumbsup::thumbsup:
     
  16. SickBeast

    SickBeast Lifer

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    Yeah it's great. I bought the card because it was on sale for $120. The cooler on it is a nice bonus. My card never exceeds 65C even under full load and overvolted and overclocked to 950mhz.

    I scored 39FPS in the Uniengine Heaven benchmark at 1920x1200 at these speeds just as a reference. AFAIK a GTX 480 scores ~45FPS on the same test, and a 5850 gets 33FPS.
     
  17. happy medium

    happy medium Lifer

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    wow, you got a great deal with that card.:thumbsup:
     
  18. happy medium

    happy medium Lifer

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    10% more performance for free, whats to think about.
     
  19. SickBeast

    SickBeast Lifer

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    Yeah, I can't say enough good things about the GTX 460.

    Last night I played some Crysis Warhead. At stock speeds I was getting around 22FPS at 1920x1200 with most settings on "enthusiast", the rest on "gamer".

    Once I overclocked my card to 950mhz, I was getting around 31FPS. I've never seen a 50% overclock on a GPU before.
     
  20. 3DVagabond

    3DVagabond Lifer

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    You'll find that with custom cooling like that heat won't be your limiting factor, any more.
     
  21. SickBeast

    SickBeast Lifer

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    I'm gonna try for 1ghz in a bit. I'm going to increase the fan speed and decrease the memory frequency a bit.
     
  22. happy medium

    happy medium Lifer

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    Decreasing the memory might help, good luck
     
  23. bryanW1995

    bryanW1995 Lifer

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  24. bryanW1995

    bryanW1995 Lifer

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    well, on a gtx 460 custom cooling is typically not needed anyway. I think I'll try out this voltage mod... ;)
     
  25. 3DVagabond

    3DVagabond Lifer

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    Sorry, my point was in reference to needing some gigantic tower to keep VGA's cool. A cooler like the Accelero or Zalman 3000 are enough cooling that heat (and noise too) isn't a limiting factor for over volting, O/C'ing.
     
  26. SickBeast

    SickBeast Lifer

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    Thanks.

    Unfortunately, even with the memory at 2000mhz and the fan at 100%, it's not stable at 1000mhz.

    I might reduce the memory some more, but I'm pretty sure I'm past the point of diminishing returns.

    950mhz on the core is quite good. I'm happy with it! :)

    :thumbsup::thumbsup: