4) Good quality PSU has MTBF 100k-200k hours. This is reduced by fan lifetime.
MTBF is a oft quoted stat that often has ZERO basis in actual real-life experience. I've seen TONS of devices or items with 6 digit rated MTBF that failed to AVERAGE even 1 year (8760 hours appx) in ACTUAL usage. I have no clue why the "LED PSU" crap is even being mentioned, miners don't use "LED" PSUs on their miners as those PSU don't have the voltage/current capasity needed to power current miners and are NOT efficient. |
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Some year perhaps I'll be able to get into coinwarz more than about once a month, they have HORRIBLE issues just flat out timing out entirely when i've tried to access their site for any reason.
I've NEVER seen that issue with bitcoinwisdom, my only issues there (currently) are 1) they haven't updated their Litecoin calculator for the block halfing 2) a lot of their market links don't work right.
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I've read a lot of "Welp bitcoin is no longer profitable" but I did some calculations and it seems pretty lucrative to me, but maybe there is something I don't quite see. I am pretty new to this scene and can be completely wrong about any of these details. I'm also not factoring in internet cost as I am paying for internet either way.
For example, I can buy an Antminer S5 for about $400 and expect to get about 1 Th/s out of it. This unit operates at 590W, so I did some numbers to crunch the electricity cost.
Electricity in my area is pretty high, with max tier usage coming in at about $0.32/kWh and baseline costing about $0.16/kWh. These can probably kept minimal with a commercial account, but let's pretend like I'm running it out of my bedroom. At max cost, I figured the electricity would cost $0.32/kWh * 0.59 kW/h * 24 h/day * 31 days/month = $140.47/month. That's a pretty high electricity bill, but let's compare that to how much it could make.
I'll be using Slush's pool as an example. Slush's pool usually has a collective hash rate of about 34 Ph/s. Your reward through this pool is calcuated by (Your Scoring Hash Rate/Pool Scoring Hash Rate)*0.98. So let's go through the calculations:
(1Th/s / 3400 Th/s) * 0.98 * 25BTC/block * 3 blocks/day * 31 days/month * ~$400/BTC= $265.06/month.
This means that per my calculations you would get a small, but definitely noticeable profit of at least $100/month. Obviously there is uncertainty in the whole bitcoin universe and difficulty will go up, but this to me seems like a much better investment to make money than gambling on penny stocks.
Please let me know if I'm mistaken!
The issue isn't that you can't make money NOW, the issue is being able to make ENOUGH money to pay back the cost of the hardware you buy before it becomes unprofitable. You messed up on your calc, 34 PH is 34000 TH not 3400 TH so based on your assumptions your income would be more like $26 / month (this is somewhat low, Slush normally finds more like 5-6 blocks a day not 3). Based on your assumptions and a CORRECTED calculation, you're LOSING over $100/month https://bitcoinwisdom.com/bitcoin/calculator is probably the best calculator out there, can account for difficulty increases (though you have to guess what they'll average long-term) and many other factors. I show you LOSING over $2/day right now at 32 cents/kWH electric on an S5 with ZERO pool cost, profit of about 8 cents per DAY right now at 16cent/kWH electric but that profit evaporates as soon as the difficulty kicks up 8-9% more than the price does (probably in a bit over a week at the next diff adjustment, pretty much definitely at the diff adjustment after that). At current difficulty, an S5 will earn a bit over 0.13 Bitcoin/MONTH. I'm pretty sure the S5 is going to become unprofitable before the halfing, unless you have FREE electric, but it might be close if your electric is in the 3 Cents/KWH range. Definitely still usefull as a space heater though. 8-) |
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Keep in mind that the temperature inside even a high efficiency (Gold/Platinum/Titanium) power supply will be noticeably warmer than the ambient temp.
Quite a few miners see temps exceeding 60 degrees C, especially when folks push the overclocking on them.
(I'm not counting the SP20 indicating 100+ as that's the on-CHIP temp of the Rockerboxes).
The "hot and cold spots" are a very good point, as temps in a miner generally are measured at a VERY FEW or even ONE point.
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If you can control the voltage of your laptop CPU and GPU, then it is OK to mine if you undervolt and underclock your laptop. Do not mine litecoin as that can be mined by ASIC.
No, it's NOT as other parts of the Laptop will tend to overheat as well. They flat out ARE NOT DESIGNED for 24/7 operation. Mining with a laptop is a good way to cause it to die FAST AND EARLY. Mining Litecoin with ANY computer is a bad idea anyway, guarenteed LOSS doing so for very little Litecoin income. ASIC is the ONLY way with any Scrypt (Litecoin, Doge, etc) coin, even early ASIC don't make anything any more unless you have SUPER CHEAP electric - then they're breakeven. |
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Mining any coin with a laptop = HIGH probability of early laptop death, and pretty heavy LOSS on most coins even if it doesn't die.
VERY VERY BAD IDEA.
Laptops are NOT INTENDED FOR 24/7 OPERATION, and anything much less than that even on "profitable" coins isn't going to make much if anything.
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DASH. Possibly others I'm not familier with.
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Is it even possible to make a living by selling bitcoins?
i think it really possible but the questions is how much bitcoin would you need to make a living Depends a lot on what you define as "a living". Some folks live comfortably on under $1000/month, some seem to think they "NEED" $5000+ to live on. "decent" is a variable concept and the cost of "decent" varies widely depending largely on where you live. "decent" in most of Iowa is easy to achieve on $2000/month, but in Manhattan you're probably paying more than that in rent alone for a "decent" place. |
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Instead of being designed to handle several different sorts of code, an ASIC miner is optimised to handle one specific type of code.
It's the difference between an old Eldorado (big engine back in the 500CI days) with a ton of "comfort features" and huge mass that isn't intended to help the car go fast or corner well, and comparing it to a Formula I racecar. The FI car is optimised for one specific function - racing - where the Eldorado isn't.
The only reason coins using algorythms other than SHA256 (Bitcoin) and Scrypt (Litecoin) can be mined at a profit is because they are small enough market that nobody feels it is worth taking the $MILLIONS to design and build and try to sell an ASIC-type miner for those coins.
(There was one company working on an X11-algorythm miner, but they didn't raise enough money to build the thing as of the last I have heard).
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There have been a FEW threads already now talking about HOW OBVIOUS OF A SCAM "Yesminers" is.
Their alleged M20 was announced several months ago, and seems to have been piggybacking on KNC's announcement of their "Solar" chip - which they are not selling to ANYONE assuming that Solar is actually in production as KNC recently claimed.
I can see a possibility of a LEGIT miner at close to those specs showing up in 2016 - but I would bet a TON it won't be associated with "Yesminers".
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1. Could switching to my Corsair AX860i power supply from my Corsair TX650 have caused my S1 to run cooler/more silent?
2. If I ordered an additional stock fan to replace the “temporary” Cougar Vortex that I installed on the front of the S1, would it become even quieter than it already became? (Remember, I can’t have the power supply run that fan because the 4,000 RPM speed would be on all the time – way too loud).
3. Is the Antminer S3 quieter than the S1?
4. If I find the S3 is louder than the S1, would underclocking/undervolting the S3 significantly reduce the noise? (I don’t want to underclock/undervolt the S1 – S3 allows it to be done in the software)
5. Would I be able to replace the stock S3 fans with something as effective, but even more quiet?
6. Will a Corsair AX860i successfully power two S3s?
7. Is there a way to find an Antminer’s IP address on my school network and log in/monitor it remotely from home?
1. No, but IIRC the AX860i itself is more efficient and will run cooler than the TX650 thus reducing overall heat generation a little. 2. No clue, I don't know offhand what fans the S1 used "stock". 3. No clue, never owned either. 4. Not directly, but undervolting and underclocking will allow you to reduce the fan speed to reduce the noise so YES indirectly. 5. Iffy, fan noise level is usually pretty closely tied to how much air it moves. 6. Not sure, does the S3 use less than 350 watts or so of +12VDC? 7. If your school does NOT use NAT for it's network, it should be possible. If it does, you're have to be able to log into the school's NAT firewall/gateway/router then SSH from that into the Antminer itself. |
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I don't recommend solo mining LTC unless you have a LOT more mining power than you have now (I run about 50% more hashrate than you do).
LTC on the other hand seems to be a lot MORE likely to achieve a positive RoI on existing gear than anything Bitcoin/SHA256 based has a PRAYER of, and for me at least is making about the same RIGHT NOW on an appx. equal investment in gear last summer (and Bitcoin diff increases have been tilting that RAPIDLY in LTC favor the last couple months).
20/20 hindsight I wish I'd bought A2s instead of my Bitcoin gear, the chance of RoI is looking MUCH better for the A2s....
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i'm new in mining starting in cpu mining but nothing earned
what to do Don't bother CPU mining on any Scrypt coin. Even GPU mining on Litecoin has been VERY VERY ineffective and unprofitable for years now, CPU mining is far worse than GPU mining. If you want to GPU mine and actually make anything, you need to move to one of the algorythms OTHER THAN SHA256 and Scrypt, as ASIC have ruled THOSE algorytms for years now. |
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If I remember the power draw on the Blizzard correctly, you will need VERY CHEAP power to break even on one. https://bitcoinwisdom.com/litecoin/calculator Double-check the block reward part, I don't think they have updated for the halfing last summer yet. I'm guessing you're talking about getting multiple Goldcoins/day, as your hashrate on Litecoin would be good for only .01 or a bit more of a Litecoin/day ( I pull appx. 4/day right now running a group of A2s at ballpark 450MH/s total). |
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Don't bother even looking for an android application to mine Scrypt. The ONLY things that mine Scrypt profitable are ASIC, and even the Gridseed GC3355 ASIC can't do it profitably any more unless your electric is SUPER cheap.
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dash coin has been tested in the market. you do not need anymore when starting to mine this coin.
IMO DASH is the third most likely coin to survive long-term, probably the best overall of the GPU mineable altcoins. Realistically though, I'd not bet on any altcoin to survive VERY long term, the market will consolodate eventually as more folks realise that "technical innovation" loses to "marketing" - and BitCoin is accepted by more of the market than all other "altcoins" combined by a WIDE margin. Think Beta (better tech) vs. VHS (better marketed) and the fact that VHS won that war as it was "good enough" and got much wider acceptance. |
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Scrypt mining is not profitable.
Odd, I'm making more out of my current Scrypt mining setup than out of my Bitcoin mining setup - with an almost identical investment into both setups. I also anticipate making a LOT more over time out of the Scrypt miners, as my Bitcoin gear is starting to get kinda marginal for making ANY profit at all. There's a REASON I'm trying to sell off my Bitcoin mining gear - it's the only prayer I have of ever achieving RoI on the stuff. even though it's NEWER gear than the A2's I use on Scrypt. |
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For perspective - a SINGLE dam on the Columbia River (of the appx. 10 owned between Chelan, Douglass, and Grant counties) generates well over 2000 Megawatts of electricity. 257 Megawatts compared to human power consumption as a whole is trivially small - and SOME of that usage replaces "space heating" power/fuel usage for at least part of the year for most of us home miners and to some small degree for commmercial miners. I suspect most major farms are running "green" through power from various hydroelectric projects around the world - specifically including at least some and possibly ALL of the major Chinese farms. MOST major industrial powers burn a fair bit of coal for power generation, as hydro and wind are NOT PRACTICAL for many areas.
There seems to be an assumption that Bitcoin mining should be more electrically efficient.
It's been moving that way for a long time now. Every new ASIC generation has been quite a bit more efficient than the generation before it. The down side is more folks have gotten involved, moving the target higher every time they add hashrate to the network.... |
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Right now, it's almost entirely about "do you have VERY VERY CHEAP electric rates" to see any profit out of a new Bitcoin mining setup.
6-7 cents/KWH is NOT "VERY VERY CHEAP". Aim for at least under 5 for any prayer of profit, and 3 or less for a decent chance at a positive ROI on any unit currently available.
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I know bitcoin is out of the question for us gpu users , but are there any altcoins I can mine?
Electricity is free in my dorm
Im running a single 780ti.
Not planning on getting rich or anything just think it's really cool and I wanted to try to get into it.
In theory, any altcoin that does NOT use SHA256 or Scrypt should be mineable, but your card is old enough it's not going to be particularly efficient at doing so. IMO upgrade it to one of the Maxwell-core cards then mine something like DASH (which is the most popular and usually the most profitable X11-based coin). LiteCoin and Doge are Scrypt, do NOT bother trying to mine them with a GPU. Bitcoin with a GPU is not worth wasting the time on - ASIC are in the ballpark of a MILLION times more efficient than the best GPU ever was at anything SHA256-based. |
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