4870 Overclocking Thread

[cantankerous]

I was running at 1050 and i even went down to 1000, the ramdacs are rated for 4 ghz only by spec. I will be trying the MVDDC and MVDDQ pencil voltmods for the ram as soo as I confirm that my voltmod was successful (dont have the water loop together yet so I can't plug the volt modded card in to the board




@ strangelife, there is no 4870 pencil voltmod, only soldering. bios does not adjust voltage (tested with multimeter)

Did you go down to 1000mhz because you had to? Was stability sacrificed if running higher? At 1000mhz is all gravy now?

[SNiiPE_DoGG]

Did you go down to 1000mhz because you had to? Was stability sacrificed if running higher? At 1000mhz is all gravy now?

yeah 1000 mhz is fine for me, no artifcats. I have found that at stock a lower mem clock allows for higher core clock.
Like this:
-I can boot and run vantage at 865/1100
-I can boot and run vantage at 875/1050

-I cannot boot and run vatage at 875/1100, it just doesnt stay stable and "display driver has stopped responding" comes up


@ NKD thanks for letting me know, this explains why you have a higher vantage score than me even though i am at higher GFX and CPU clocks.

It's the operating system, stupid.

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on another note, i just got shipped notification on my second 4870from RMA

[Mopeygoth]

how hot does your core/gpu vrm and memorychips run?

some pretty nice modding you've done there

yeah 1000 mhz is fine for me, no artifcats. I have found that at stock a lower mem clock allows for higher core clock.
Like this:
-I can boot and run vantage at 865/1100
-I can boot and run vantage at 875/1050

-I cannot boot and run vatage at 875/1100, it just doesnt stay stable and "display driver has stopped responding" comes up


@ NKD thanks for letting me know, this explains why you have a higher vantage score than me even though i am at higher GFX and CPU clocks.

It's the operating system, stupid.

----------

on another note, i just got shipped notification on my second 4870from RMA