Also even if the usb 3.0 does allow for more power, you are still limited by the hubs power limits. So a higher hashing, more power hungry usb stick would only mean less sticks per hub making the usb sticks even less usefull since extra hardware costs basically just doubled. And what about heat? Tese things get pretty hot as it is. Adding another chip would take it closer to requiring active cooling per stick.
What about the smaller nm asic chips though. Dont they use less power? I doubt it would be enough for usb powered status but maybe
or lower the volts/tuning and do the 2 chips to hash at 500mhs .
I used to do it with my 22 gpus. my hd7970's would hash at 500mhs .9 volts rather then 625-660 mhs 1.1 volts.
a 1 gpu pc could hash at 500mhs with a 155 watt pull. crank it to 250 watts it would hash at 630 mhs. if you did 2 chips and altered each chips power draw it could work. I would far prefer a setup where a stick hashed at 500 mhs then 336 mhs
500mhs does seem like a better number for hashing. and I am unfamiliar with how these chips work, but maybe they cannot be under-volted too much and still perform. it seems like i read somewhere that these sticks were already running at lower voltages but i could simply be confusing these sticks with something else.
hopefully the next generation of asic chips will allow higher hash rates at same or lower power consumption. I think with difficulties getting as high as they are, a 1ghs stick needs to come out just to stay competitive as a one-and-done hasher. but still, it is it nice to have something that runs at what most GPUs can run at but at only @ ~2.5w. I think we are getting too greedy / expecting something for nothing with wanting these sticks to perform better. but who knows what the next generation of chips and sticks will bring.
I think maybe a platform that is modular, much like the blades, would be nice. You plug in the required amount of usb cables and plug in another board or two for asic rails. throw a fan on it and call it a day. but i guess that would be a USB blade which may be coming our way anyway.