Is BTC6.5 bad investment for batch 3?
I would sell all and buy 10 bit tech A1 clones for 4.4btc each.
S1 and S2 are dead by now. Impossible to ROI.
Topic: ANTMINER S2 Discussion and Support Thread - page 132. (Read 355842 times)
I would sell all and buy 10 bit tech A1 clones for 4.4btc each.
S1 and S2 are dead by now. Impossible to ROI.
for those having power supply problems - I am interested what your room temp is at. if i understand correctly higher temps = lower efficiency so you cannot expect the power supply to perform the same at 60 degrees F (15.5 Celsius) vs 80 degrees F (26.5 Celsius). this also would make a difference as to where it is pulling air from (inside the case B2's vs outside the case B2's). i for one replaced mine about 2 hrs after receiving it due to the fact that i wanted to overclock it (if possible). but i did not have any problems with my unit using the stock PS with the room temp at 60 degrees F or below.
short term a cool room the psu will work. long term it is under sized.
be smart pull a blade all worries vanish. this may be the best solution for almost all owners of the gear.
another fairly cheap solution is to replace the power supply with something beefier. my personal recommendation (and what I did for myself) is to spend around $150 and purchase 2x of these 750w kits - http://www.gekkoscience.com/products/server_supply_breakout_board.html - and run them with power sharing pins and you have more than enough for the S2 (unless we figure how to overclock past 250mhz) and enough for 3 overclocked S1's. and if you have one of these power supplies go bad you can replace it for a cheap $25 from ebay. i keep an extra few on hand for myself anyway for rapid deployment for myself and customers. if you want more info on the maker of these you can read this thread - https://bitcointalksearch.org/topic/server-power-supply-interface-board-for-standalone-miners-and-gpu-rigs-379677
DISCLAIMER: I am in no way affiliated or compensated by sidehack for this recommendation. he has a decent product and i feel he should make money for his work and research.
EDIT: here's pictures of my setup
https://dl.dropboxusercontent.com/u/23772269/2x%20power%20supplies%20in%20tandem.jpg
https://dl.dropboxusercontent.com/u/23772269/top%20view%20case%20off.jpg
https://dl.dropboxusercontent.com/u/23772269/top%20view%20with%20case%20on.jpg
i have some of these boards and psu, what gauge wire did you use for the main lines? and what did you use for the current share pin to pin? i've been looking in vain for some time for a set of pin to pin female cables
Is BTC6.5 bad investment for batch 3?
IMHO yes...not a good investment...
Let's do some math... S1 is 0.831 BTC ...or $410-415 ( @112Bit as well)...
S2 is generally replicated 5 x S1 ...in a rack box ...10 blades vs 2 blades design...900Gh vs 1000Gh
So $410 x 5 = around $2,000 ...add 1 more blade ...around $2,100 ...all other parts, including PSU, case, LED etc are maybe another $100 at cost...$2,200...but they are saving of 4 controllers less...and they are not so cheap...
My guess is that In May we will see price in the $2,000 and a change range...
What do you think...? Am I missing something...?
I guess there is no such thing as free. So power that I am paying for regardless if I mine or not. But I also use this power to operate my business, free was in that sense. I'm not paying any rent for my miners, it's just 1 shelf in my office, leeching off my business' available power, space and internet connection. So really I have no "additional" cost for operating these buggers. Hence, free.
In the larger scheme, no such thing as free lunch (until and if a truly free and clean energy device is developed). Even though your space is not metered, I'd be surprised if were not being metered somewhere. It seems someone, somewhere will be paying a bit more on their bill.
In your situation (with which I have some familiarity) you don't really have free power. You have $/month of fixed subsidy (the value of your power usage at full load). The power is actually very expensive to you in marginal cost, because you can't get more at any price.
I guess there is no such thing as free. So power that I am paying for regardless if I mine or not. But I also use this power to operate my business, free was in that sense. I'm not paying any rent for my miners, it's just 1 shelf in my office, leeching off my business' available power, space and internet connection. So really I have no "additional" cost for operating these buggers. Hence, free.The point is, you are already mining to the max, and getting the full subsidy from the free power, regardless of which miners you use. It is a fixed amount of per month.
In your situation (with which I have some familiarity) you don't really have free power. You have $/month of fixed subsidy (the value of your power usage at full load). The power is actually very expensive to you in marginal cost, because you can't get more at any price.
I guess there is no such thing as free. So power that I am paying for regardless if I mine or not. But I also use this power to operate my business, free was in that sense. I'm not paying any rent for my miners, it's just 1 shelf in my office, leeching off my business' available power, space and internet connection. So really I have no "additional" cost for operating these buggers. Hence, free. 
It's a large commercial building and contract has power included. Plus it's unmetered. To top it all, I have very limited power available as you can see above list maxed out my electrical consumption. So it's not necessarily a giant farm in hiding.
Sounds like a dream for a Bitcoin enthusiast. Wonder if you could bring in an electrician to add another panel or two and expand your "free" power (although that may require a transformer upgrade, which can be pricey).
There's a thread somewhere to underclock S1 to draw less power so u can add Hz without tripping your power.
It's a large commercial building and contract has power included. Plus it's unmetered. To top it all, I have very limited power available as you can see above list maxed out my electrical consumption. So it's not necessarily a giant farm in hiding.
Sounds like a dream for a Bitcoin enthusiast. Wonder if you could bring in an electrician to add another panel or two and expand your "free" power (although that may require a transformer upgrade, which can be pricey).
Sometimes its even worse than that. In some places with unmetered service, any new electrical work (permit) will require you to put in a meter
In your situation (with which I have some familiarity) you don't really have free power. You have $/month of fixed subsidy (the value of your power usage at full load). The power is actually very expensive to you in marginal cost, because you can't get more at any price.
My opinion is to sit tight and wait for better deals, and just keep going with the S1s. I do not believe the S2 is worth the price. Make your own decisions though.
It's a large commercial building and contract has power included. Plus it's unmetered. To top it all, I have very limited power available as you can see above list maxed out my electrical consumption. So it's not necessarily a giant farm in hiding.
Sounds like a dream for a Bitcoin enthusiast. Wonder if you could bring in an electrician to add another panel or two and expand your "free" power (although that may require a transformer upgrade, which can be pricey).
It's a large commercial building and contract has power included. Plus it's unmetered. To top it all, I have very limited power available as you can see above list maxed out my electrical consumption. So it's not necessarily a giant farm in hiding.
Sounds like a dream for a Bitcoin enthusiast. Wonder if you could bring in an electrician to add another panel or two and expand your "free" power (although that may require a transformer upgrade, which can be pricey).
With free power you definitely want to go with S1s instead of S2s. The biggest advantage of S2s is lower power usage at a much higher price per hash.
I have the following running currently;10XS1
1XKNCMiner
5XBE Blades
My problem is that I've run out of power available. I can't even OC anything without tripping switches.
So if I replace 3XS1's with 1XS2 that's 540GHs out and 1TH in. I can easily sell those 3 units and make some money back in fiat.
With free power, you can stretch your investment longer than almost everyone else. But "free" might not be free anymore if you are drawing large amounts. Someone will likely notice eventually.
It's a large commercial building and contract has power included. Plus it's unmetered. To top it all, I have very limited power available as you can see above list maxed out my electrical consumption. So it's not necessarily a giant farm in hiding. 
Is BTC6.5 bad investment for batch 3?
I estimate 1T currently making 0.065 means 100 days to breakeven before difficulty increase or electricity costs.
No go.
S1 @ 0.831 for 180G makes 0.0125 or 67 days to breakeven.
Risky too but possible.
In 65 days the dificulty will increase from 6.9 to over 20+ Billion.
After the 10 Billion mark in 2 1/2 weeks the miner is only making .0025 btc per day before the next jump.
Is BTC6.5 bad investment for batch 3?
I estimate 1T currently making 0.065 means 100 days to breakeven before difficulty increase or electricity costs.
No go.
S1 @ 0.831 for 180G makes 0.0125 or 67 days to breakeven.
Risky too but possible.
With free power, you can stretch your investment longer than almost everyone else. But "free" might not be free anymore if you are drawing large amounts. Someone will likely notice eventually.
Is BTC6.5 bad investment for batch 3?
Bitmain won me over with the S1. I have one batch 2 S2. I will unlikely pull for the batch 3 S2 unless the price comes down. There are alternatives.
Is BTC6.5 bad investment for batch 3?
I estimate 1T currently making 0.065 means 100 days to breakeven before difficulty increase or electricity costs.
No go.
S1 @ 0.831 for 180G makes 0.0125 or 67 days to breakeven.
Risky too but possible.
With free power you definitely want to go with S1s instead of S2s. The biggest advantage of S2s is lower power usage at a much higher price per hash.
Is BTC6.5 bad investment for batch 3?
I estimate 1T currently making 0.065 means 100 days to breakeven before difficulty increase or electricity costs.
No go.
S1 @ 0.831 for 180G makes 0.0125 or 67 days to breakeven.
Risky too but possible.
Is BTC6.5 bad investment for batch 3?
I estimate 1T currently making 0.065 means 100 days to breakeven before difficulty increase or electricity costs.
No go.
S1 @ 0.831 for 180G makes 0.0125 or 67 days to breakeven.
Risky too but possible.
Is BTC6.5 bad investment for batch 3?
posting again so it will be at the top of the page:
I've been running mine at 1080 gh/s for over 24 hrs now and it reports that both on the miner and at the pool. overclock to 1080 gh/s by following:
if you do the following the config will save even through reboots:
1. have 4/10/14 firmware
2. ssh into miner (user root, password admin)
3. cd /config
4. vi asic-freq.config
5. comment out current stats (place a # in front of lines that dont have it)
6. add these:
option 'freq_value' '0801' #212.5M
option 'chip_freq' '212.5'
option 'timeout' '40'
7. save
8. you can either type reboot or you can go to the web interface and click save on the miner configuration page.
I've been running mine at 1080 gh/s for over 24 hrs now and it reports that both on the miner and at the pool. overclock to 1080 gh/s by following:
if you do the following the config will save even through reboots:
1. have 4/10/14 firmware
2. ssh into miner (user root, password admin)
3. cd /config
4. vi asic-freq.config
5. comment out current stats (place a # in front of lines that dont have it)
6. add these:
option 'freq_value' '0801' #212.5M
option 'chip_freq' '212.5'
option 'timeout' '40'
7. save
8. you can either type reboot or you can go to the web interface and click save on the miner configuration page.
I've been running mine at 1080 gh/s for over 24 hrs now and it reports that both on the miner and at the pool. overclock to 1080 gh/s by following:
if you do the following the config will save even through reboots:
1. have 4/10/14 firmware
2. ssh into miner (user root, password admin)
3. cd /config
4. vi asic-freq.config
5. comment out current stats (place a # in front of lines that dont have it)
6. add these:
option 'freq_value' '0801' #212.5M
option 'chip_freq' '212.5'
option 'timeout' '40'
7. save
8. you can either type reboot or you can go to the web interface and click save on the miner configuration page.
if you do the following the config will save even through reboots:
1. have 4/10/14 firmware
2. ssh into miner (user root, password admin)
3. cd /config
4. vi asic-freq.config
5. comment out current stats (place a # in front of lines that dont have it)
6. add these:
option 'freq_value' '0801' #212.5M
option 'chip_freq' '212.5'
option 'timeout' '40'
7. save
8. you can either type reboot or you can go to the web interface and click save on the miner configuration page.
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