ATI overclocking utilities

I have a Sapphire ATI 1Gb 4870 HD, but I was wondering whether anyone knew any tools that allowed me to overclock the card, and Change its voltage.

I know there is ATI Overdrive, but I want something that can change the Core Voltage? I heard of this Sapphire TRIXX, but I dont know where to get it
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  1. I've used ATI Tray tools in the past and on my last card which was a 4870. I was running 825/1050. I did not touch the voltage because the 4870 gives off quite a bit of heat as it is.
  2. Use msi afterburner and go in the config file and change the enableunofficialoverclocking value from 0 to 1 and you will be able to put 1.35v on the core and overclock past the bios limits without having to flash it.
  3. snorojr said:
    Use msi afterburner and go in the config file and change the enableunofficialoverclocking value from 0 to 1 and you will be able to put 1.35v on the core and overclock past the bios limits without having to flash it.


    Isnt MSI Afterburner only usable on MSi graphics cards. I have a Saphhire Card
  4. msi after burner is usable with most ati cards
  5. Thanks just tried it an it works!.

    Question: when I open the program for the first time does it display the default voltage, and core clock?

    Also during games, does the card automatically change/increase voltage and clock speeds?
  6. If you use AB it will set your voltage and clocks to their maximum and you will not drop down to idle speed until you reboot. This is going to generate a lot of heat and many people use some sort of after market cooling - unless you like those fans running at 75% all day long...

    It is displaying the default volts which increase as the 3d engine ramps up. This tool sets it to the limits and leaves it there.
  7. So When I first opened it up, the program showed a core clock of 750Mhz and Core Voltage of 1.274, but the monitor showed a core clock of 600Mhz.

    Does it mean that the card will overclock itself to 750Mhz and Vcore of 1.274V when needed (i.e. games)?
  8. Could someone also recommend a good GPU Stress test?

    Thank you
  9. furmark or there is a stress test available with newer catalyst that is also good
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