it is more efficient at 900gh
it is less efficient at 1300 gh
the s-5 pretty much is .50 to .53 watts a gh
the sp20 is .44 to .62 watts a gh depends on the hash settings.
Right now I am running an sp20 at 1185gh and using 599 watts on a plat psu that is 0.5054 watts a gh
I have had all three of them:
sp20
s-5
avalon 4.1
the sp20 set to 1200gh is medium loud not quiet
the s-5 set to 1200gh is nut job crazy loud without proper fan mods I can get an s-5 to do 1300gh at 55db with 35 dollars in mods.
the avalon likes to do 800 to 925 gh dead quiet decent power numbers. costly
What are the S5 mods that make it tolerable volume? I'd consider one for my home use except how loud I've heard they are. I don't mind fan noise, my computer runs 24/7 and has like 8 case fans, but I do mind like a vacuum cleaner running in my room all day.