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I've seen no failures and no decline in performance whatsoever over 3 1/2 months. Multiple units, all stock clocks.
As others said, power cost and profitability will likely take these out of service before they fail in large numbers. When that happens is anyone's guess. If you can predict the price of bitcoin and the future difficulty then you are the only one in the world who can do it. Congratulations.
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I'm looking for a .7btc loan for 3 weeks.
For collateral i have:
THOR: 4.8 million
SHA: 10,800
LTC: 1
GHC 10,000
UNI: 55,000
vault: 11,000
I have a few more LTC on coinex... but have no idea when that will come back online... sadly.
I've done a few loans on here already, and i always payback on time or early.
Haven't heard from you on this one... i suppose that's a no-go? No go. PM sent with more details. |
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If possible just deal with someone local and get cash before you release the transaction. Almost every single payment scheme besides getting cash handed to you has methods of scamming and if you are new to selling you will probably not know what to look for.
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Typical datacenter limits are 10-20kw per rack. I've also seen this stated as watts per square foot. If you need more watts in a rack, they may be able to handle it, but you have to rent more datacenter space even if you aren't using it, so again you get to empty space. No real advantage to such high power densities unless there is an angle to it such as some usual situation such as extra available power capacity with little available space.
I have no doubt it is possible to design a non-commodity datacenter with >10-20kw/rack but then there will be additional costs, and the economics of those 1.25U miners which already aren't that good are even worse.
I'm also not aware of anyplace on earth with very low power costs that doesn't also have lots of available space.
The economics of 1 kw/u just don't make sense without some missing piece.
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Yes I had previously done that calculation as well. The only thing I can think of is if you are (or maybe your employer is) already paying for a rack that is underutilized power-wise but has a little space left you can add a few of the miners.
What sort of servers are used that have higher densities of power than the usual rack? (fitting with the scenario you suggested above). The situation I described would have lower power density. Thus it would have excess power that could be balanced closer up to power density limits by putting some miners in the rack. An example would be servers that are usually idle, or large storage arrays. One might even speculate that "the Israelis" (I can't manage to get myself to memorize their name) have such a scenario in mind for their hosting produce, or a major customer who does. |
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I've been offline for several hours due to a family medical emergency (seems to be resolved now). I will be looking at the posts and PMs in about 2-3 hours.
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Yes I had previously done that calculation as well. The only thing I can think of is if you are (or maybe your employer is) already paying for a rack that is underutilized power-wise but has a little space left you can add a few of the miners. I couldn't give a rats ass about nanometers or "sexy" miners (seriously you guys need to get out more). All I care about is price, delivery, reliability, hash rate, and power usage.
Obviously, I don't have to agree with you 100% (except for the part that I should get out more).. but you're right on the money with that fact that the ASIC doesn't need to look "pretty". To get the job done is the right attitude and it's not like we'd look like poster boys ourselves either. Furthermore, it left me thinking about the 1.25U competitor.. If they consume between 1.2 - 1.35kW power, why bother with such a small factor (and risk with not being able to dissipate the heat effectively, hence more noise for fans spinning at max)? Yes, it is the coolest looking kid on the blockchain, but as most Data Centers can normally only facilitate up to between 8 to 12 kW of power per rack (including the equivalent in cooling), where lies the benefit in 1.25U when you can only fit 10 of those into a 42U rack maximum, leaving 70% of the rack unpopulated from a density point of view? Data Centers that could facilitate more power are few and far between. In this sense, BITMAIN seems to be spot on with the sizing - but it does come down to the price and how well they can position themselves on the market. No doubt more competition is coming and the big names of the past are looking to regain their position. |
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It depends on the situation. I tend to be on the side of lower interest rates but being very demanding in terms of collateral. I do not want to charge everyone extra to make up for the loans that go bad. I want to avoid bad loans. Both are reasonable ways of making money, but my focus is more on the side of good loans.
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The weird part is that even though I bitch a bit about luck on a site like Eclipse I did the math with some spreadsheets and the payouts are right on the money for the Month of March. So it is a fine pool to use, it's just the human tendency to focus on the losses (low luck rounds) and ignore the wins (good luck rounds).
Spreadsheets and bitcoin however do not lie. Fascinating.
http://en.wikipedia.org/wiki/Loss_aversion |
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PPS has no variance. You always get the same. All the other methods have some variance, which means you get lucky or unlucky. Some days you get more than PPS, some days you get less. That's how it works. If you want no risk and just get absolutely steady income like clockwork you have to use PPS, but you will usually get less that way over time.
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I couldn't give a rats ass about nanometers or "sexy" miners (seriously you guys need to get out more). All I care about is price, delivery, reliability, hash rate, and power usage.
Have to agree. "Sexy" looking miners that don't ROI aren't going to pay the bills. And women don't pull their clothes off because your server looks "cool". They pull their clothes off because your miner is filling your wallet with BTC. Exactly. This guy is doing it right: https://bitcointalk.org/index.php?topic=443718.msg5769874#msg57698741. Exposed circuit boards and fans? Check. 2. Repurposed ATX power supplies? Check. 3. Miners that ship when ordered and ROI? Check. 4. Rat's nest of power and ethernet cables? Check 5. Girl taking off her clothes? Check. |
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I couldn't give a rats ass about nanometers or "sexy" miners (seriously you guys need to get out more). All I care about is price, delivery, reliability, hash rate, and power usage.
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I presume the noise is related to the amount of heat being produced within a small area. Maybe try adding a desk fan, see if noise relates to room temp
The noise is related to the need to force a lot of air through a small space. Most high performance 1U servers are very loud. If you modify the system design you can probably make it quieter (at your own risk of course). It is also possible to get a soundproof (or at least reducing) enclosure for rack mount gear, at added cost of course. |
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What was the originally promised ship date on the alpha scrypt miner?
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Zero HW errors is not valuable under normal conditions (unless HW errors are otherwise excessive). What is important is accepted hash rate by the pool.
The correct formula for hw errors is "hw / (hw + diffa + diffr)." Should be 1% or under normally. I have a few that get zero HW at normal clocks and a few that get 1% or so, but I don't notice a difference in delivered hash rate. In fact my most productive unit (by only a small margin though) is the one with the most hw errors. All are running at stock clocks.
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Excuse me I didn't get how can I lend coins? I mean what kind of reputation should I have?
If you want to lend you don't really need a reputation. If you want to borrow you generally need collateral |
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I don't use btcjam. I checked out the site a little bit and didn't really like it. Can't say what I didn't like about it, just a preference. I'm a newbie so I won't ask for loans since I've seen plenty of people around here getting ready to jump newbies for "being scammers".
I was just curious to ask if you use btcjam for lending money ? (I have my request there, but it's not related to this topic).
I would loan against my car to pay my studies but unless you're from the EU, it wouldn't work.
Anyway, cheers and good luck finding good investment opportunities.
edit : spelling mistake
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If you split across enough pools you can't ever have bad luck.
Well not exactly but you can reduce variance. But you also miss out on individual pool good luck streaks. but you can also miss out an individual pool bad luck streaks. The network isn't exactly a zero sum game. Every pool could have a bad luck streak at the same time, so you can't get away from it. True. I should have said you minimize your bad luck (and good luck as someone else pointed out) |
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