Quote from: MrRig on August 28, 2017, 07:49:54 AM

Quote from: jareso on August 28, 2017, 06:40:17 AM

Quote from: AniceInovation on August 28, 2017, 03:53:27 AM

Guys, what kind of efficiency improvement do you get when underclocking? Does someone have hard numbers?
...

Skunk algorithm is pretty sensitive for overclocking/underclocking of 1080 Ti in a good and most efficient power consumption way for me.

I overclocked /underclocked my Aorus 1080 Ti Xtremes to core +120 (1841MHz) and memory -2000 (9010MHz) with power limit at 85% and getting around 59 MH/s in tpruvot's ccminer x86 2.2 per every single card!

It seems that lowering memory clocks to lowest possible value helps gaining hashes in this specific algorithm.

For example at stock settings (1721MHz / 11010MHz) and power limit at 100% these Aorus 1080 Ti Xtreme cards are giving only about 52 MH/s per card in the same miner with each card pulling 100W more of the wall in contrast that when they are actually underclocked to settings I described, pulling 100W less of the wall per each card, yet still running about 7 MH/s more per card at skunk!

I guess it is because of GDDR5X memory types these cards have and that's why lowering memory clocks a lot surprisingly gains more hashes at these cards.

Hm in MSI afterburner i can only reduce memory speed to -550 Mhz. Can you please tell me what tool you are using to reduce the memory speed that much? Thanks

I use Aorus native utility called "GRAPHICS ENGINE" for overclocking/underclocking.
I am not sure whether that tool would work also for 1080 Tis of other brands and manufacturers, but probably not. Undecided