Topic: ANTMINER S3+ Discussion and Support Thread - page 511. (Read 710164 times)

Funny (or sad) thing is that professional investors who run gigantic farms will soon be out of business ... even at $0.05/kWh.
Lesson: Never underestimate the stupidity of the masses 

the network is over-secured.

after the asic inflation comes the "network trust inflation".

people starting to realize that buying asic is not so profitable anymore.

+1  

no problem, they are ensuring the network

Enjoy losing your money guys, that's what will happen 

As far as I know, if do not intend to overclock then 2 pcie connectors (per unit) are sufficient.

I think any Gold rated PSU from a reasonable brand  850w and over should be ok if you plan to keep with normal clocks.

Yes, thank you. I am looking for good one. What I do not understand is prereq of how many PCI-e connectors is needed in case of overclocking. Reading info on Bitmain I think all four needs to be populated

Here is info from Bitmain:
"There are 4 PCI-e connectors for +12V DC input, but it only needs to connect two of them if without overclocking (PSU not included). Don’t parallel connected different DC input from different PSU into the same Hashing board."

I enjoy how they let me go through to checkout, then they decide to tell me this nonsense....

Re the PSU question,

I've already got a 1000w OCZ ZX PSU, and I'm planning to run my 2 S3 overclocked to 504ghs or thereabouts.  Do you think I'll be ok using the PCI E cables that came with the PSU or should I get thicker gauge?

Thanks

No way to order S3 now. It seems that Batch 1 is sold out. 

Disappointed that minimum order quantity is 2, my S1 has just scraped enough btc to get a single S3 to keep me tinkering.

But not willing to invest in 2 and have to get another PSU as well.  

well mine is 0.15c per kwh and I come out even steven buying bitcoin vs the miner...no diff...I think this is gonna be the norm (neck and neck) till 1st part of 2015 esp
with the big PH farms springing up...gonna get ugly

Searing

I'm not saying you are right or wrong But,
how come the 0.27KW/H become a heavily discounted rate?
Where you live? Normally its .15 to.19 or lower for most.
BTC exchange rate need also to be included in it.
Also run the S3 overclocked.

yeah it is gonna be equip Armageddon from now till 1st of the year (2015) imho

www.coinbase.com is looking pretty good vs say in fall 2015 15k for equip that does like 4 coin or some such ..I don't care if coin is 2k at that point
I just mentally won't be able to make the hurdle on that (my oct 550gh jupiter KNC will make 49 coin EOL)....now I know how the CPU and GPU guys
feel like and why they mostly just buy coins...heh

Searing
 

A lot of PSUs are available to select.
You some PSUs and post the community will help you.
Watch the PSUs efficiency rating and take a look at the +12V single rails current rating.

Wow. Using bitcoinwisdom calculator.. even with low estimate of difficulty increasing (10% per jump) and my $0.27/kWH (heavily discounted) domestic power rate, there is no way I'd even make back half of the investment cost buying one of these. I guess we'll leave it up to those with dirt cheap / free power.

As per the datasheet values below, S3 can be overclocked to 504Ghs and further to 554Ghs.
The stock clock speed is set in between 225M and 250M and voltage per chip lies in between 0.72Vand 0.75V per chip (366W/S3).
When overclocking to 504Ghs it will be consuming around 390W at 250M Clockspeed.
And when overclocking to 554Ghs the clock speed might be 275M and power consumption around  488Watts.
Further overclocking may not be possible, everything lies in finding the sweet spot frequency.
Take a look at DC-DC converters, they are a lot in nos, do you have any idea? Even this new chip consumes lower voltage than S1.

S3 Datasheet Values
Voltage(V) | Hash Rate(GH/s) | Current(A) | Total power(W) | W/GH
0.72                14.18                 10.40             7.49             0.528
0.75                15.75                 12.24             9.18             0.583
0.80                17.33                 15.20            12.16            0.702
0.85                17.33                 20.00            17.00            0.981

Clock Freq. (M)|Hash rate (G)|Reg. value|Ideal delay (ms)|Recommend delay (ms)
100                      6.30              0783          42.6                    38
125                      7.88              0983          34.0                    31
150                      9.45              0b83          28.4                    26
175                    11.03               0d83         24.3                    22
200                    12.60               0782         21.3                    19
225                    14.18               0882         18.9                    17
250                    15.75               0982         17.0                    15
275                    17.33               0a82         15.5                    14
300                    18.90               0b82         14.2                    13
325                    20.48               0c82         13.1                    12
350                    22.05               0d82         12.2                    11
375                    23.63               0e82         11.3                    10
400                    25.20               08f2         10.6                     10