It's possible to to get around 32% increase but the hash/watt decreases as the SP-mod is using much ALOT more wattage at same OC.
This is spreadcoin. Cards wich use more power has the most gain. The 1080ti is up around 60% @ 100%tdp and oc.
I was also talking about spreadcoin. Hash/watt ratio with OC decreases for the 1060gtx 3GB.