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Re: nTek Computers | World's Most Powerful Bitcoin Miner - 2.4Th/s (to 3.2Th/s)
the current price listed for the 2.4Th/s nTek miner is set high right now because we are currently working out some details for the production cost.
This is about the stupidest thing ANY company would do and the sentence basically summarizes all the crap we're getting from incompetent bitcoin companies like BFL, HashFast, etc..
Here is a tip: If you are serious about your business, then please try to learn from those companies before you that succeeded and failed, because we as a bitcoin community have indeed learned our lessons.
just my 0.002 btc
I think you are worrying to much about the heat. You realize that 70F is only 21C. Here in Texas last summer I was running a bunch of GPU miners. They run at 70C which is 158F. The hot Texas summer day of 115F (46.1) air was enough to cool the miners down.
This year I have a bunch of S1 Antminers and we have already had high 95+F days so far. The S1's did fine with just some outside air being blown into the room with the miners and the hot air leaving the room. In the main mining room with the building closed up, the room was at 115F (46.1C). I opened the doors and windows to get the air circulating and the room dropped to near outside ambient temp in no time.
I don't see that much of a problem here when it gets to summer temps at 115F (46.1C), just keep the air moving with outside air and have several replacement miner fans on hand as fans fail when you don't want them to. If you cannot create the air exchange from outside with the inside, then you need to rethink you setup. You need air flow from outside to inside to outside.
This reminds me of the late 80's and early 90's when small and medium businesses where having their computers networked. I could not count how many times I was called in to troubleshoot network problems only to find a server or router closet. That was the dumbest idea I seen done over and over by inexperienced so called "tech's". Putting electronic equipment that produces heat into a closed off, normally not air cooled, closet. You have to have air exchanging to keep the equipment running. Same with the miners.
This year I have a bunch of S1 Antminers and we have already had high 95+F days so far. The S1's did fine with just some outside air being blown into the room with the miners and the hot air leaving the room. In the main mining room with the building closed up, the room was at 115F (46.1C). I opened the doors and windows to get the air circulating and the room dropped to near outside ambient temp in no time.
I don't see that much of a problem here when it gets to summer temps at 115F (46.1C), just keep the air moving with outside air and have several replacement miner fans on hand as fans fail when you don't want them to. If you cannot create the air exchange from outside with the inside, then you need to rethink you setup. You need air flow from outside to inside to outside.
This reminds me of the late 80's and early 90's when small and medium businesses where having their computers networked. I could not count how many times I was called in to troubleshoot network problems only to find a server or router closet. That was the dumbest idea I seen done over and over by inexperienced so called "tech's". Putting electronic equipment that produces heat into a closed off, normally not air cooled, closet. You have to have air exchanging to keep the equipment running. Same with the miners.
+1
I have 21 S1 Antminers sitting in a plastic bench/rack in a small room .. I just installed 4 of these fans http://www.walmart.com/ip/Powermax-High-Velocity-Fan-20/17134033 from walmart
two in the front and two the rear to create a massive tunnel effect and it works like a charm. They cool down the miners down to outside temp in no time given the room door iand windows are open.
Today it was 90F outside and my miners read 38C
Re: [Antminer S1 Sales open] Price changes daily, now 0.855 BTC for 180GH/s
it really irritates me whenever some1 mentions "oh no but what about the warranty" blah blah..
almost every1 overclocks the S1's, including Bitmain I imagine, and with the reset button, everything goes back to normal and overclocking is not traceable.
So, really, what it boils down to is Bitmain giving you the benefit of the doubt, which I think they will and do..
As such, overclocking should never be a concern and the 90 day warranty means NOTHING in this business. Heck, I ordered 21 miners from Bitmain and not once did I receive an invoice or a warranty with the miners, and I'm fine with that because Bitmain have more than earned my and everyone else's trust.
almost every1 overclocks the S1's, including Bitmain I imagine, and with the reset button, everything goes back to normal and overclocking is not traceable.
So, really, what it boils down to is Bitmain giving you the benefit of the doubt, which I think they will and do..
As such, overclocking should never be a concern and the 90 day warranty means NOTHING in this business. Heck, I ordered 21 miners from Bitmain and not once did I receive an invoice or a warranty with the miners, and I'm fine with that because Bitmain have more than earned my and everyone else's trust.
Let's see. This is a picture of the junkyard full of mining gear. About 350gh here.
https://farm8.staticflickr.com/7232/13951821694_51b93cece6_b.jpg
A close up of the equipment
https://farm8.staticflickr.com/7185/13928272092_5d0a740f7d_b.jpg
A wide angle shot of the sheds. Good solar porn here.
https://farm4.staticflickr.com/3724/13951942834_1f91d87190_b.jpg
And a close-up of the board work. Brand new FTDI chip=Happy unit!
https://farm3.staticflickr.com/2911/13951523655_8b302116d4_b.jpg
Side note: When you put the chip on make sure that you align the dot on the chip with the dot on the board. Otherwise all hell will break loose and you will be placing yet another order with Mouser. :-)
C
https://farm8.staticflickr.com/7232/13951821694_51b93cece6_b.jpg
A close up of the equipment
https://farm8.staticflickr.com/7185/13928272092_5d0a740f7d_b.jpg
A wide angle shot of the sheds. Good solar porn here.
https://farm4.staticflickr.com/3724/13951942834_1f91d87190_b.jpg
And a close-up of the board work. Brand new FTDI chip=Happy unit!
https://farm3.staticflickr.com/2911/13951523655_8b302116d4_b.jpg
Side note: When you put the chip on make sure that you align the dot on the chip with the dot on the board. Otherwise all hell will break loose and you will be placing yet another order with Mouser. :-)
C
very nice PV setup, maybe you should consider installing some wind turbines next for a hybrid system.. maybe the vertical axis ones if you wanna save on civil work
Re: Lets Join Forces And combine our GH to make some Bitcoin
Combining mining power does not increase the amount earned at all. The sum total is the same as separate miners. All I see is a way for you to take their money.
I have no interest in being a thief, I have better character than that. If you feel that way than this is not for you.
The more GH/s power you have during each shift the more shares you earn.. you get a bigger reward for each shift for more shares.
I am willing to share my contact info such as personal cellphone number with all interested miners.
Thanks
dude.. are you seriously trying to convince the very person who wrote cgminer that "combining" mining power on btcguild would yield higher output than mining separately?
If I were you I'd leave it there and stop insisting on being an idiot..
Re: [0% Fee] [2000 GH] MuPool.com Multi Coin Pool now Supports Bitcoins
what is probability of finding block / getting payout with pool hashrate ~ 2.2 Th/s ?
6 months at current diff.
if they indeed found a block, I'd take the money and run lol..
Do they have any plans for batch3 at all?
I love that Bitmain actually ships their products... you know... when they say they are going to. I just wish they interacted with the community a bit more... its a shame
.They used to be more involved with the forum. It seems to be the pattern for every hardware developer... post a lot on the forum and then slowly disappear when things get complicated... KNC, the Bitfury guys, HF, etc. Heck, even going back to Avalon, BFL and ASICMiner. Spondoolies are still in their honeymoon phase and post almost every day. Let's watch and see if that changes too.
i noticed that too..
I wonder who's next to have their "honeymoon" phase as you say lol..
I'm putting my money on Nonce-tech
Re: In Your OPINION, What is the best way to use BTC to net more BTC?
How can we use BTC to make more BTC for ourselves? What is the most efficient way to go about this in your opinion?
Simply being a bitcoin early adopter/innovator is already a rare and powerful investment opportunity that
is open to anyone right now.
It is not necessary to try to generate "more BTC". Instead, simply buy some coins
and hold onto them for 5 years, and see what happens.
This. Simply put, you can never generate more btcs than what you're having now with what you're having now. I used btcs to get miners to try to get more btc, I lose more btc than I can eventually generate. The best way to 'net' more btc is to simply buy, buy and keep buying.
+1
Re: 2 BTC Loan Required. Escrow preferred. Collateral Provided
Hi, I'm looking for a 2 BTC loan. Repayment will be done in 7-10 days. I will return with 5% interest, so that would be 2.1 BTC in total. I would prefer a reputable escrow of your choice. I believe 1% fee is the standard Escrow fee and we can split that cost in half. These are what I can offer as collateral (along with their somewhat undervalued valuation):
3,900 BC (~1.014 BTC @ 26,000 sats - BC / BTC)
400,000 DOPE (~0.579 BTC @ 145 sats - DOPE / BTC)
13,000,000 MRC (~0.39 BTC @ 3 sats - MRC / BTC)
That would make it about 1.983 BTC. I'm not selling them at the moment to get the 2 BTC because I believe they will be worth much more in a week. My fallback plan and worst case scenario to keep my reputation would be to rent out my rig and pay back slowly with a little more interest to compensate. I have a near perfect score with quite a bit of rentals done, so you know its legit.
Hit me with any questions either on the thread or PM me. I will try to answer them as soon as possible. Thanks.
3,900 BC (~1.014 BTC @ 26,000 sats - BC / BTC)
400,000 DOPE (~0.579 BTC @ 145 sats - DOPE / BTC)
13,000,000 MRC (~0.39 BTC @ 3 sats - MRC / BTC)
That would make it about 1.983 BTC. I'm not selling them at the moment to get the 2 BTC because I believe they will be worth much more in a week. My fallback plan and worst case scenario to keep my reputation would be to rent out my rig and pay back slowly with a little more interest to compensate. I have a near perfect score with quite a bit of rentals done, so you know its legit.
Hit me with any questions either on the thread or PM me. I will try to answer them as soon as possible. Thanks.
your 400,000 dope have now quadrupled in btc value..
sell while your "420" portfolio is still "high"
Does anybody got any experience with this fan? Scythe DFS123812H-3000 Ultra Kaze 120mm x 38mm
Yep...using them since January...as output fan in push-pull conf...Stock is input, variable controlled by the Ant...Scythe is direct connected @ full speed...and is Quieter than stock...heatsinks on the chips...Aluminum 8mm x 8mm...Cooper 10mm x 10mm on the Volt chips and big COILs...low 40-ies degrees @406MHZ...205-210GH stable...in HOT Florida...
Phobya Thermal pads...0.5mm
Cheers,
ZiG
So fan I looked @ Delta= To loud and to much amp flow Had the Delta 120mm 3.9A 256 cfm 5600RPM @66dba
Akasa 120/140 x25 Viper R PWN= 109.55cfm on 1600 RPM, It's a 120mm fan but the blades are 140mm @21.7dba
Cooljag Everflow 120x25mm 9 Blade PWM= 110.03 cfm 2400 RPM @39.5 dba
Does anybody finds the stock fan stats? cfm, RPM I know its a 1 Amp To I need to find a slide faster fan (perma 100% power) for Exhaust
Main-goal get it cool and not to loud.
not sure if you checked this before, but this link might help
http://www.digikey.com/product-search/en/fans-thermal-management/dc-fans/1179730
free does not mean unlimited, so when buying the miners it is good to take energy efficiency into consideration.
Lets say you have X amount of free electricity per month (limited by breaker, wire, street transformer, or other factor).
now lets say that X amount is totally free.
but you have to decide between a miner that uses 10 Watts per GH/s vs 1 W per GH/s, well is you use the miner that use 1 W per GH/s, given the same total amount of free energy you will get 10 times the hashing rate.
So free does not mean unlimited, so making good use of that electricity is a good idea, since it is an asset that you have, and the better you managed that asset the better.
Think of it this way the bitcoin faucet gives you free bitcoins, but not because they are free you are going to waste them because they are limited.
This is the very concept that gives bitcoin value, a limit of 21 million coins.
Given that electricity is limited, you have to consider all factors to make a good decision not just hashes per dollar.
Also getting rid of the heat is a pain, since the most efficient method is the use of fans a lots of ventilation, since if you use air conditioning you will be sacrificing energy that could instead be used for mining.
I know it is one of those thing that the average person will never get, the fact that something does not have a price, does not mean it has no value, even bitcoin itself when it started had no price, but it did have value.
Lets say you have X amount of free electricity per month (limited by breaker, wire, street transformer, or other factor).
now lets say that X amount is totally free.
but you have to decide between a miner that uses 10 Watts per GH/s vs 1 W per GH/s, well is you use the miner that use 1 W per GH/s, given the same total amount of free energy you will get 10 times the hashing rate.
So free does not mean unlimited, so making good use of that electricity is a good idea, since it is an asset that you have, and the better you managed that asset the better.
Think of it this way the bitcoin faucet gives you free bitcoins, but not because they are free you are going to waste them because they are limited.
This is the very concept that gives bitcoin value, a limit of 21 million coins.
Given that electricity is limited, you have to consider all factors to make a good decision not just hashes per dollar.
Also getting rid of the heat is a pain, since the most efficient method is the use of fans a lots of ventilation, since if you use air conditioning you will be sacrificing energy that could instead be used for mining.
I know it is one of those thing that the average person will never get, the fact that something does not have a price, does not mean it has no value, even bitcoin itself when it started had no price, but it did have value.
if electricity is limited, which in reality it is, then yes I agree with what you said.. otherwise, I see no problem with my point.
The way I think about it as an economic optimization problem. You have an input and output, as well as a belief of what the bitcoin value should be, all you have to do is solve the optimization problem and see what hash per dollar *given* your electricity constraint and bitcoin value belief yields the maximum.
The average person may not get this, but it is not hard to educate.
As I said. DON'T go full 400Hz. Look at mine it hits 200GH/s but low Hardware Error % and good Temp and don't for get the Heatsinks for the Converters (Total of 8 )
may I ask what hex code you're using for 393 MHZ ?
I tried '5f82' but got 2.5% on many of my machines, but going for 387MHZ using hex code '5e82' seems to give me 0.5% error with 3 Ghz less total hash output. This seems to be consistent across atleast 10 of my S1 ants
I am still a noob XD but I played around alot. Those settings are the best for speed and low HW Error % Rate
Maybe as a return you can help me to find a fan. 120mm 100-130 cfm by a lower then 50 dBA with max 1.05 Amp Put my Delta on the unit via direct power-supply gets the antminer down to 37 C.......but plus 4 Amps @65dBA. That is the noise level of a industrial floor cleaner.
BTW NEVER EVER put that thing on the Blade....EVER 4Amps pulls 45 Watt. So I assume the blade will burn off. Just a guess never tryed it.
Jomant's Magic Settings for 200 GH/s and a Hardware Error Rate of 0.69 %
Tip me some BTC if it works for you
option freq_value 5f05′
option chip_freq 393.75′
option timeout 36′
tried these settings and got the same error rate as my previos hex settings
maybe its my miners.
but regarding the fan,
I use the stock fan as intake and a delta AFC1212DE as an exhuast on the other end.
you get the same results if you use the stock fan as exhaust and the delta as intake.
Just make sure to cut the blue wire on the additional fan you buy so it runs at full speed the whole time, otherwise it wont properly sense the voltage coming from the miner to adjust rpm.
the delta is 51 dB with 200 CFM and uses 1.3A @12vdc so no big deal taking that power from the board. I have 25 ants with these fans as exhaust running for at least a month with no problems.
you can find it for $8 shipped on ebay just type in AFC1212DE
Ahh ok I got the TFC1212DE @3.90A yours pulls only 1.6A what is awesome due to that it produces good pressure. Cool
About your issue:
I use a 650W power supply and got the heatsinks for ASIC and Converter on as seen above. What is ur temp?
Ohh PS do me a favor and unplug ur delta and hook it up to direct power from ur power supply just to see if the 1 extra amp less fixes the issue.
If you have TeamSpeak and a headset let me know. I am not to shy to talk to people !!!
Oh, I think I know where you're going with this.. probably overloading the PCB and Voltage regulators in delivering the power to the fans as opposed to the ASICs?
this makes sense bcz heat is never an issue, I run giant fans on either side of my rig to make a tunnel effect and temps rarely ever go above 40c.
thanks for the advice, I will definitely try that tonight and let you know the results!
As I said. DON'T go full 400Hz. Look at mine it hits 200GH/s but low Hardware Error % and good Temp and don't for get the Heatsinks for the Converters (Total of 8 )
may I ask what hex code you're using for 393 MHZ ?
I tried '5f82' but got 2.5% on many of my machines, but going for 387MHZ using hex code '5e82' seems to give me 0.5% error with 3 Ghz less total hash output. This seems to be consistent across atleast 10 of my S1 ants
I am still a noob XD but I played around alot. Those settings are the best for speed and low HW Error % Rate
Maybe as a return you can help me to find a fan. 120mm 100-130 cfm by a lower then 50 dBA with max 1.05 Amp Put my Delta on the unit via direct power-supply gets the antminer down to 37 C.......but plus 4 Amps @65dBA. That is the noise level of a industrial floor cleaner.
BTW NEVER EVER put that thing on the Blade....EVER 4Amps pulls 45 Watt. So I assume the blade will burn off. Just a guess never tryed it.
Jomant's Magic Settings for 200 GH/s and a Hardware Error Rate of 0.69 %
Tip me some BTC if it works for you
option freq_value 5f05′
option chip_freq 393.75′
option timeout 36′
tried these settings and got the same error rate as my previos hex settings
maybe its my miners.
but regarding the fan,
I use the stock fan as intake and a delta AFC1212DE as an exhuast on the other end.
you get the same results if you use the stock fan as exhaust and the delta as intake.
Just make sure to cut the blue wire on the additional fan you buy so it runs at full speed the whole time, otherwise it wont properly sense the voltage coming from the miner to adjust rpm.
the delta is 51 dB with 200 CFM and uses 1.3A @12vdc so no big deal taking that power from the board. I have 25 ants with these fans as exhaust running for at least a month with no problems.
you can find it for $8 shipped on ebay just type in AFC1212DE
As I said. DON'T go full 400Hz. Look at mine it hits 200GH/s but low Hardware Error % and good Temp and don't for get the Heatsinks for the Converters (Total of 8 )
may I ask what hex code you're using for 393 MHZ ?
I tried '5f82' but got 2.5% on many of my machines, but going for 387MHZ using hex code '5e82' seems to give me 0.5% error with 3 Ghz less total hash output. This seems to be consistent across atleast 10 of my S1 ants
dude, with the heat you generate I think you can run a water desalination power plant or something lol..
PSU is now officially DEAD....
Emailing Bitmain AGAIN....
Emailing Bitmain AGAIN....
looks like Bitmain should've listened to all the numerous shouts made here about properly sizing the psu, or atleast gave the option of no psu and/or better ventilated the unit.
easy..
what to mine? BTC
how? well if you TRULY arent paying any electricity costs, then you should buy the cheapest old miners out there like some BFL or Avalon G1 old scrap.. this will maximize your Ghz output per $ invested.
after a quick look on the market, I am pretty sure there are many desperate sellers who want to get rid of their old miners for really dirt cheap.
a hash is a hash whether it comes from an S1, A1 coincraft, or a KnC miner..
what to mine? BTC
how? well if you TRULY arent paying any electricity costs, then you should buy the cheapest old miners out there like some BFL or Avalon G1 old scrap.. this will maximize your Ghz output per $ invested.
after a quick look on the market, I am pretty sure there are many desperate sellers who want to get rid of their old miners for really dirt cheap.
a hash is a hash whether it comes from an S1, A1 coincraft, or a KnC miner..
So do you mean those who pay for electric bil are not having that much profit?
I'm trying to illustrate a point.. which is that if electricity is free, then buy the cheapest hash per $ paid..
for example, if you have free gas, would you factor in MPG in your car buying decision?
same concept applies with miners, if I have free electricity, then I'd buy a cheap-ass 200 Ghz avalon miner (from some1 that desperately wants to sell it) that costs say $200 than say an S1 antminer at $470 or a 200 Ghz BitFury at $800
easy..
what to mine? BTC
how? well if you TRULY arent paying any electricity costs, then you should buy the cheapest old miners out there like some BFL or Avalon G1 old scrap.. this will maximize your Ghz output per $ invested.
after a quick look on the market, I am pretty sure there are many desperate sellers who want to get rid of their old miners for really dirt cheap.
a hash is a hash whether it comes from an S1, A1 coincraft, or a KnC miner..
what to mine? BTC
how? well if you TRULY arent paying any electricity costs, then you should buy the cheapest old miners out there like some BFL or Avalon G1 old scrap.. this will maximize your Ghz output per $ invested.
after a quick look on the market, I am pretty sure there are many desperate sellers who want to get rid of their old miners for really dirt cheap.
a hash is a hash whether it comes from an S1, A1 coincraft, or a KnC miner..
Re: I Love Buying From Bitcoin-Accepting Merchants, But...
with the current volatility in btc prices, I wonder how accounting/reporting mechanisms those merchants need to employ in order to avoid the possibility of paying high tax based on fiat book value at the time of sale versus the market value when the btc price is low during financial reporting period.
The best solution imo that would benefit both and reduce volatility/loss risk on the merchant side would be if the IRS was smart enough to tax bitcoin in btc as opposed to property/fiat tax.
But that step I believe is too early as doing so will effectively legitimize btc as a currency, which is something the IRS wouldn't do anytime in the near future.
The best solution imo that would benefit both and reduce volatility/loss risk on the merchant side would be if the IRS was smart enough to tax bitcoin in btc as opposed to property/fiat tax.
But that step I believe is too early as doing so will effectively legitimize btc as a currency, which is something the IRS wouldn't do anytime in the near future.