- Feb 11, 2008
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Since I haven’t wanted to abort processing on my 1660 super for testing with the bench software, I adjusted the memory speed while processing a real WU. It’s not very scientific, but its interesting.
At stock, my power target was near 100% - memory at 6801 MHz and gpu clock at 1850, and I was processing at 679000 points per day (with a small variation).
Decreasing memory -250mhz briefly decreased board power, but the gpu quickly jumped to 1900mhz keeping board power near 100%. This increased estimated ppd to around 690,000.
Decreasing memory to -500mhz decreased board power again and the gpu went up another 50mhz (with small variation). Estimated ppd went up to 700000 with small variation.
Decreasing memory to -750mhz has the gpu occasionally jumping to 2000mhz, but it doesn’t stay there. Estimated ppd went back to 690k.
Decreasing memory to -1000mhz has no effect on gpu speed and estimated ppd went down to 660000. -1000 was as low as I could take the memory with EVGA precision X, so I might need to see if other software lets me go lower. I would like to see ppd at something like 4750.
Again, not scientific and only 2 minutes of observations on a live WU which will have variation on its own, but there appears to be a benefit to trading memory speed for gpu speed, to a certain point.
does anyone know if the other over clocking software (ASUS, Msi, etc) will allow a memory down clock less than -1000mhz? I would kind of like to try -5000 if it’s possible.
At stock, my power target was near 100% - memory at 6801 MHz and gpu clock at 1850, and I was processing at 679000 points per day (with a small variation).
Decreasing memory -250mhz briefly decreased board power, but the gpu quickly jumped to 1900mhz keeping board power near 100%. This increased estimated ppd to around 690,000.
Decreasing memory to -500mhz decreased board power again and the gpu went up another 50mhz (with small variation). Estimated ppd went up to 700000 with small variation.
Decreasing memory to -750mhz has the gpu occasionally jumping to 2000mhz, but it doesn’t stay there. Estimated ppd went back to 690k.
Decreasing memory to -1000mhz has no effect on gpu speed and estimated ppd went down to 660000. -1000 was as low as I could take the memory with EVGA precision X, so I might need to see if other software lets me go lower. I would like to see ppd at something like 4750.
Again, not scientific and only 2 minutes of observations on a live WU which will have variation on its own, but there appears to be a benefit to trading memory speed for gpu speed, to a certain point.
does anyone know if the other over clocking software (ASUS, Msi, etc) will allow a memory down clock less than -1000mhz? I would kind of like to try -5000 if it’s possible.