there is the data sheet ：http://www.cybtc.com/thread-3194-1-1.html

6.4 Power Consumption
The following is the power consumption under 1.0V DVDD condition (Unit: Watt). Gridchip will
release more accurate power consumption data after mass production of ASIC Chip and Mining machine.

Freq(MHz)   BTC HashRate(M)     LTC HashRate(K)      Power of  BTC Mode     Power of  BTC+LTC Mode        Power of  LTC Mode
700             1750                        59.6                          4.20                             4.56                                         0.44

GC3355 is on public sale. At BeiJing time 2014-1-14 18:00PM.
Mail 1 day after pay.
one USB Machine = 360K LTC + 10G BTC
(when only mining LTC is 7w, both mining LTC & BTC is 60w)
http://cybtc.com/thread-4792-1-1.html