Post
Topic
Board Hardware
Re: i need to buy S9 but i have a problem with PSU
by
philipma1957
on 06/07/2016, 18:53:12 UTC
Hey Phillip...

I noticed your strong advocation for down clocking...

A little off topic for the thread -- but:

I live in an ungodly large home for just 2 people -- so the noise isn't even heard 99% of the time...

However, I am plugging in a 1600W PSU into just a regular outlet (20 Amp circuit) for my S9.  I've seen some of the awful pictures of other miners that burned -- Am I OK?  Or should I consider sliding the scale down just a bit...

I know it says that it pulls 1300W -- but every time I check the kilowatt meter, it was between 1138W and 1194W -- temps are fine (air conditioned environment)...

I know that you are an expert -- and reading your advice about down clocking kind of mentally set me back a bit...

I'd like to hash as much as possible -- without risk...

Thanks!!!

 Smiley Smiley Smiley

Im currently hosting my S9 at my house now using an EVGA g2 1600W from a wall outlet also. I chose to underclock for this exact reason, and also just to be safe. I saw a lot of Phils posts saying that they should be underclocked for many reasons

these are the batches.  all have 189 chips all have 2 fans

if bitmaintech made the clocks drop from 650 to 550  and kept the fans and the chips the same it seems like common sense to clock them all close the the batch 5 number of 550  rather then the batch 1 number of 650



batch 1 14.0th    freq 650
batch 2 12.93th  freq 600
batch 3  12.93th freq 600
batch 4  12.93th freq 600
batch 5  11.85th freq 550

my one at home is clocked to 462 until I move it to the array


my four at the array are clocked at 600 with monster fans action.