On JB I have now:
0.00154751999999999993
BTC Est. Earnings
But I will only get this when a block is found?
Compacs are running 250 MHz, heatsink is quite hot, they run on the USB 3.0 bus. Should see with USB doctor how much current they draw now.. (av 13.5 GH/S)
Yes, you will only receive a payout from a pool when a block is found. Any pool, not just bravo mining. The estimate is made based on the number of shares you submitted vs. the total shares of the pool for that round.
You should have a fan on the compacs at that frequency. They will be pulling just about 1.0 amps at 250 freq.