I got my test data after a longer period and am pretty happy with the results as I hit over my 900GH/s target and don't like to miss  
Settings are
400:370:340 7250v and auto volts
Miner starts out using 539W and within 16 or so mins is down to 499W and poolside giving the same results which is important to me as the config page can say 1 thing but reality at the pool can be quite a shocking difference
.5489W/GH works for me 909GH/s @499W
The best part about this speed is how quiet the miner is
I think its quieter than C1 and S3 actually it is the quietest miner I have used with the exception of USB miners  







My 3 preset settings so far (editing the eco, normal and turbo files for ease of switching modes but customs mode with auto volts does the same thing using those settings:
ECO mode (still needs tweaking but normal is a better deal for more output) :
{
"avalon4-freq" : "340",
"avalon4-voltage" : "6875"
}
 gives 431W for around 795GH/s

NORMAL MODE:
{
"avalon4-freq" : "400:370:340",
"avalon4-voltage" : "7250"
}

gives 909GH/s for 499W best bang for the buck

TURBO mode:
{
"avalon4-freq" : "450:390:370",
"avalon4-voltage" : "7750"
}
 this gives around 1TH with lowest power usage of 588W

Nice results u got as well phil pretty damn close