visdude
Legendary
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Activity: 1081
Merit: 1001
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September 14, 2013, 09:10:23 AM |
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I never bothered to understand pool difficulty before. When I started out with GPUs last year, the default suggested difficulty on my account/worker page had always been 1. When I switched to ASIC last month, it stayed at 1 because I didn't know any better but in spite of this, BFGMiner indicated diff at 13. Reading the recent posts on here prompted me to edit my worker just now and picked 17-32 GHash/s range. My account/worker page now shows a suggested difficulty of 16 and BFGMiner diff is also 16. What exactly happened here and what is the significance? Is this the right/optimum setting?
Edit: BFGMiner now shows diff went down to 10 (I'm confused). BTW, since I made the changes, my Rejects went up form .08% to .21%, if that is even significant.
Difficulty settings dictate what level of difficulty the miner will accept and send to the pool. Higher difficulty means higher rejects. Diff 16 means harder hashes, but every hash counts as 16 shares. Thanks for the explanation.
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mdopro1
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September 15, 2013, 02:17:29 AM |
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I have 3 GPU miners each with a single 7950 card. One of the cards suddenly is going extremely high in temperature reaching cutoff within a minute. Fan speed shows as if it's spinning at normal rate. This is my first GPU issue since I started mining a couple of months ago. Can anyone tell me what I should look for?
I have since turned it down too 750MHz GPU speed and temps are steady at 87C - and this thing is doing as much hash rate as a USB block erupter, which is a shame.
Any help is appreciated.
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New Bitcoin fund doubling platform has launched! Receive Automated Payment Every 2 Hours Appealing alternative with Sophisticated algorithms. https://Btc-Funds.com
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Guybrush01
Newbie
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Activity: 20
Merit: 0
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September 15, 2013, 02:24:33 AM |
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Slush will not - namecoin has been turned off.
Did he say why? Just curious.
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nottm28
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September 15, 2013, 11:29:46 AM |
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I have 3 GPU miners each with a single 7950 card. One of the cards suddenly is going extremely high in temperature reaching cutoff within a minute. Fan speed shows as if it's spinning at normal rate. This is my first GPU issue since I started mining a couple of months ago. Can anyone tell me what I should look for?
I have since turned it down too 750MHz GPU speed and temps are steady at 87C - and this thing is doing as much hash rate as a USB block erupter, which is a shame.
Any help is appreciated.
When you physically look at the fans - are they both spinning full speed?
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donations not accepted
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mdopro1
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September 15, 2013, 12:26:59 PM Last edit: September 15, 2013, 12:43:29 PM by gmaxwell |
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I have 3 GPU miners each with a single 7950 card. One of the cards suddenly is going extremely high in temperature reaching cutoff within a minute. Fan speed shows as if it's spinning at normal rate. This is my first GPU issue since I started mining a couple of months ago. Can anyone tell me what I should look for?
I have since turned it down too 750MHz GPU speed and temps are steady at 87C - and this thing is doing as much hash rate as a USB block erupter, which is a shame.
Any help is appreciated.
When you physically look at the fans - are they both spinning full speed? I'll see it today when I'm at the site but thanks for the pointer, sensor could say one thing and fan could be off. Are they easy to find and replace?
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New Bitcoin fund doubling platform has launched! Receive Automated Payment Every 2 Hours Appealing alternative with Sophisticated algorithms. https://Btc-Funds.com
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angryrob
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September 15, 2013, 02:41:20 PM |
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holy hashrates batman! anyone else been watching the next difficulty prediction? 0_o
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eleuthria
Legendary
Offline
Activity: 1750
Merit: 1007
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September 15, 2013, 04:49:57 PM |
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holy hashrates batman! anyone else been watching the next difficulty prediction? 0_o
Always wait a few days before looking at new difficulty projections, they're VERY inaccurate at first. Right now BTC Guild was running at 150%+ luck for the last 18 hours. That effectively puts the network speed projections at +175 TH/s just from BTC Guild. If any other large pools had a similar lucky streak, the estimate is completely thrown off until that luck evens out.
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RIP BTC Guild, April 2011 - June 2015
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nottm28
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September 15, 2013, 07:28:18 PM |
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I have 3 GPU miners each with a single 7950 card. One of the cards suddenly is going extremely high in temperature reaching cutoff within a minute. Fan speed shows as if it's spinning at normal rate. This is my first GPU issue since I started mining a couple of months ago. Can anyone tell me what I should look for?
I have since turned it down too 750MHz GPU speed and temps are steady at 87C - and this thing is doing as much hash rate as a USB block erupter, which is a shame.
Any help is appreciated.
When you physically look at the fans - are they both spinning full speed? I'll see it today when I'm at the site but thanks for the pointer, sensor could say one thing and fan could be off. Are they easy to find and replace? I had a 7970 that suddenly began to run at much higher temps - turned out one of the fans had stopped turning - see here for the various suggestions from the community... https://bitcointalk.org/index.php?topic=250705.0
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donations not accepted
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trasla
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September 15, 2013, 07:37:03 PM |
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My suggestion: quit running that card. My question: how much more do you pay on energy compared to your BTC reward?
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zurg
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September 15, 2013, 09:52:02 PM |
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I am pulling my BF from Slush's. From BitFury page I am hitting 36-39GH/s (running 24/7 obviously) Lately there have been to many instances where BF is reporting 36Gh lets say ans Slush's is saying my reward is not what is should be. My only temporary fix for this was to restart my miner every few hours or when I catch the rewards levels drifting off to where I know it's a problem somewhere. (I am going to test a few days with Bitminter to see if any difference. The last 30min it's been 37 to 40Gh.) Let the test begin. # Block found at Duration Total shares Your shares Your BTC reward Block # Block value Validity 20058 2013-09-15 17:29:19 0:13:43 12548741 6854 0.01344081 258178 25.19760381 73 confirmations left 20057 2013-09-15 17:15:36 0:30:45 27923822 15687 0.01340737 258176 25.03930960 71 confirmations left 20056 2013-09-15 16:44:51 1:41:51 92542754 53523 0.01400364 258172 25.17849582 67 confirmations left 20055 2013-09-15 15:03:00 0:28:30 25660964 8143 0.00795845 258164 25.10434846 59 confirmations left 20054 2013-09-15 14:34:30 3:54:12 212791583 113196 0.00777608 258159 25.08676663 54 confirmations left 20053 2013-09-15 10:40:18 2:36:46 141656128 82434 0.01397730 258135 25.18045046 30 confirmations left 20052 2013-09-15 08:03:32 1:00:39 54904212 33131 0.01343850 258117 25.02893680 12 confirmations left 20051 2013-09-15 07:02:53 4:03:00 218937938 126283 0.01426751 258108 25.32093276 3 confirmations left 20050 2013-09-15 02:59:53 5:12:41 284428611 135114 0.01408910 258072 25.12901062 confirmed 20049 2013-09-14 21:47:12 2:13:35 122161653 56129 0.00753105 258034 25.14307541 confirmed 20048 2013-09-14 19:33:37 0:50:57 46401717 27014 0.01465370 258015 25.01535462 confirmed 20047 2013-09-14 18:42:40 0:13:34 12502023 6850 0.01222630 258003 25.07640000 confirmed 20046 2013-09-14 18:29:06 0:02:01 1829874 929 0.01257313 258001 25.03120000 confirmed 20045 2013-09-14 18:27:05 1:37:26 88768628 41450 0.01300920 258000 25.09370015 confirmed 20044 2013-09-14 16:49:39 0:31:22 28885734 16083 0.01064981 257982 25.24410730 confirmed 20043 2013-09-14 16:18:17 2:17:04 122606366 52388 0.01310560 257979 25.25859928 confirmed 20042 2013-09-14 14:01:13 0:34:28 29963805 18377 0.01397606 257961 25.08078998 confirmed 20041 2013-09-14 13:26:45 3:19:09 170795001 77586 0.01602968 257953 25.09193760 confirmed
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scooter
Member
Offline
Activity: 100
Merit: 10
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September 15, 2013, 10:49:46 PM |
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My suggestion: quit running that card. My question: how much more do you pay on energy compared to your BTC reward? Nothing wrong with using a utility as a currency exchange. The higher cost is just the premium the utility is charging you to convert one currency to another.
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visdude
Legendary
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Activity: 1081
Merit: 1001
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September 16, 2013, 03:47:42 AM |
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My suggestion: quit running that card. My question: how much more do you pay on energy compared to your BTC reward? Nothing wrong with using a utility as a currency exchange. The higher cost is just the premium the utility is charging you to convert one currency to another. Interesting. I try to present a similar concept when I get asked about operating expenses (hardware, power bill, etc.) versus BTC mined. For example: if mining one BTC ends up yielding a negative bottom line of -$100 (technically a loss) after all the operating expenses are applied, it can be argued that it is akin to buying one BTC at $100. Therefore, based on the current BTC-USD average exchange rate of $138, it would then be an excellent buy. It's all relative.
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mdopro1
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September 16, 2013, 04:06:26 AM |
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I have 3 GPU miners each with a single 7950 card. One of the cards suddenly is going extremely high in temperature reaching cutoff within a minute. Fan speed shows as if it's spinning at normal rate. This is my first GPU issue since I started mining a couple of months ago. Can anyone tell me what I should look for?
I have since turned it down too 750MHz GPU speed and temps are steady at 87C - and this thing is doing as much hash rate as a USB block erupter, which is a shame.
Any help is appreciated.
When you physically look at the fans - are they both spinning full speed? I'll see it today when I'm at the site but thanks for the pointer, sensor could say one thing and fan could be off. Are they easy to find and replace? I had a 7970 that suddenly began to run at much higher temps - turned out one of the fans had stopped turning - see here for the various suggestions from the community... https://bitcointalk.org/index.php?topic=250705.0It turned out to be one of my high cfm fan controller going bad and stopped a case fan that was directly pushing air onto the card. This was also at night time so there was no air conditioning, hence temp jump. I removed the controller and all is back to normal but noisy as hell because this fan does 260cfm and sounds like a vacuum cleaner going. My suggestion: quit running that card. My question: how much more do you pay on energy compared to your BTC reward? I have free power... or say included in rent so whatever.
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New Bitcoin fund doubling platform has launched! Receive Automated Payment Every 2 Hours Appealing alternative with Sophisticated algorithms. https://Btc-Funds.com
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jmevz
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September 16, 2013, 04:19:26 AM |
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holy hashrates batman! anyone else been watching the next difficulty prediction? 0_o
lmao!
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trasla
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September 16, 2013, 05:46:44 AM |
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Interesting. I try to present a similar concept when I get asked about operating expenses (hardware, power bill, etc.) versus BTC mined. For example: if mining one BTC ends up yielding a negative bottom line of -$100 (technically a loss) after all the operating expenses are applied, it can be argued that it is akin to buying one BTC at $100. Therefore, based on the current BTC-USD average exchange rate of $138, it would then be an excellent buy. It's all relative.
In that case, you hace counted the coins' value twice. Unless, of course, "if mining one BTC ends up yielding a negative bottom line of -$100" does mean you have counted costs and not subtracted the coins value yet. But with a GPU, you definitely use way way more than 138$ on energy per coin you mine. The "i convert currencies" explanation is perfectly fine, its just interesting that some trade a BTC for 300$ using the GPU, which is loud and hot in your room all the time, instead of buying from some guy at 138$ Not paying for energy could be one good reason, but there are stories where the miners found out these kind of deals can easily get cancelled when they start consuming way more than before all the time. The only explanation where i dont feel someone is really mis-calculating, is "its my hobby, i have no problem with my hobby costing money".
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visdude
Legendary
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Activity: 1081
Merit: 1001
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September 16, 2013, 07:44:10 AM |
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Interesting. I try to present a similar concept when I get asked about operating expenses (hardware, power bill, etc.) versus BTC mined. For example: if mining one BTC ends up yielding a negative bottom line of -$100 (technically a loss) after all the operating expenses are applied, it can be argued that it is akin to buying one BTC at $100. Therefore, based on the current BTC-USD average exchange rate of $138, it would then be an excellent buy. It's all relative.
In that case, you hace counted the coins' value twice. Unless, of course, "if mining one BTC ends up yielding a negative bottom line of -$100" does mean you have counted costs and not subtracted the coins value yet. But with a GPU, you definitely use way way more than 138$ on energy per coin you mine. The "i convert currencies" explanation is perfectly fine, its just interesting that some trade a BTC for 300$ using the GPU, which is loud and hot in your room all the time, instead of buying from some guy at 138$ Not paying for energy could be one good reason, but there are stories where the miners found out these kind of deals can easily get cancelled when they start consuming way more than before all the time. The only explanation where i dont feel someone is really mis-calculating, is "its my hobby, i have no problem with my hobby costing money". My example is just that, an example. I didn't specifically say that GPUs would yield a -$100 loss per BTC. Just in case you didn't get the gist of it, it's just a different way of looking at it (hence I stated, "It's all relative"). Why would it be counting the value of coins twice? Please explain in detail. What part of "after all the operating expenses are applied" makes it "counting the coin's value twice"? I reiterate: if I ended up with a -$100 (loss) after all the expenses are subtracted, it stands that I have one BTC that cost me $100 (debit) which is actually worth $138 or so in the market. Doesn't it mean that I'm still ahead $38 if I exchange that one BTC for $138?
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tccd
Newbie
Offline
Activity: 51
Merit: 0
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September 16, 2013, 07:52:41 AM |
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I am pulling my BF from Slush's. From BitFury page I am hitting 36-39GH/s (running 24/7 obviously) Lately there have been to many instances where BF is reporting 36Gh lets say ans Slush's is saying my reward is not what is should be. My only temporary fix for this was to restart my miner every few hours or when I catch the rewards levels drifting off to where I know it's a problem somewhere. (I am going to test a few days with Bitminter to see if any difference. The last 30min it's been 37 to 40Gh.) Let the test begin. # Block found at Duration Total shares Your shares Your BTC reward Block # Block value Validity 20058 2013-09-15 17:29:19 0:13:43 12548741 6854 0.01344081 258178 25.19760381 73 confirmations left 20057 2013-09-15 17:15:36 0:30:45 27923822 15687 0.01340737 258176 25.03930960 71 confirmations left 20056 2013-09-15 16:44:51 1:41:51 92542754 53523 0.01400364 258172 25.17849582 67 confirmations left 20055 2013-09-15 15:03:00 0:28:30 25660964 8143 0.00795845 258164 25.10434846 59 confirmations left 20054 2013-09-15 14:34:30 3:54:12 212791583 113196 0.00777608 258159 25.08676663 54 confirmations left 20053 2013-09-15 10:40:18 2:36:46 141656128 82434 0.01397730 258135 25.18045046 30 confirmations left 20052 2013-09-15 08:03:32 1:00:39 54904212 33131 0.01343850 258117 25.02893680 12 confirmations left 20051 2013-09-15 07:02:53 4:03:00 218937938 126283 0.01426751 258108 25.32093276 3 confirmations left 20050 2013-09-15 02:59:53 5:12:41 284428611 135114 0.01408910 258072 25.12901062 confirmed 20049 2013-09-14 21:47:12 2:13:35 122161653 56129 0.00753105 258034 25.14307541 confirmed 20048 2013-09-14 19:33:37 0:50:57 46401717 27014 0.01465370 258015 25.01535462 confirmed 20047 2013-09-14 18:42:40 0:13:34 12502023 6850 0.01222630 258003 25.07640000 confirmed 20046 2013-09-14 18:29:06 0:02:01 1829874 929 0.01257313 258001 25.03120000 confirmed 20045 2013-09-14 18:27:05 1:37:26 88768628 41450 0.01300920 258000 25.09370015 confirmed 20044 2013-09-14 16:49:39 0:31:22 28885734 16083 0.01064981 257982 25.24410730 confirmed 20043 2013-09-14 16:18:17 2:17:04 122606366 52388 0.01310560 257979 25.25859928 confirmed 20042 2013-09-14 14:01:13 0:34:28 29963805 18377 0.01397606 257961 25.08078998 confirmed 20041 2013-09-14 13:26:45 3:19:09 170795001 77586 0.01602968 257953 25.09193760 confirmed # Block found at Duration Total shares Your shares Your BTC reward Block # Block value Validity 20061 2013-09-16 05:16:58 1:14:04 66928719 49531 0.02453905 258271 25.17486378 85 confirmations left 20060 2013-09-16 04:02:54 2:42:23 146349338 4333 0.00076529 258261 25.11184913 75 confirmations left 20059 2013-09-16 01:20:31 7:51:12 427752608 384437 0.00074610 258243 25.33121055 57 confirmations left 20058 2013-09-15 17:29:19 0:13:43 12548741 12495 0.02438421 258178 25.19760381 confirmed 20057 2013-09-15 17:15:36 0:30:45 27923822 26600 0.02210033 258176 25.03930960 confirmed 20056 2013-09-15 16:44:51 1:41:51 92542754 87780 0.02440325 258172 25.17849582 confirmed 20055 2013-09-15 15:03:00 0:28:30 25660964 23275 0.02137285 258164 25.10434846 confirmed 20054 2013-09-15 14:34:30 3:54:12 212791583 203525 0.02038170 258159 25.08676663 confirmed 20053 2013-09-15 10:40:18 2:36:46 141656128 133525 0.02343147 258135 25.18045046 invalid 20052 2013-09-15 08:03:32 1:00:39 54904212 53235 0.02388774 258117 25.02893680 confirmed 20051 2013-09-15 07:02:53 4:03:00 218937938 209965 0.02502974 258108 25.32093276 confirmed Same here. I restarted the mining proxy to fix it.
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trasla
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September 16, 2013, 07:58:44 AM |
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What part of "after all the operating expenses are applied" makes it "counting the coin's value twice"? I reiterate: if I ended up with a -$100 (loss) after all the expenses are subtracted, it stands that I have one BTC that cost me $100 (debit) which is actually worth $138 or so in the market.
Expenses are subtracted from what amount? If you subtracted from the coins value, like: 1 BTC: 138$ minus energy 200$ minus value decrease of hardware 38$ = -100$ than its not a coin which cost 100$ and is a good buy, its a coin which cost 238$ and is worth 138$, thus a bad buy which made you loose 100$. If you just list all expenses and get 100$, thats not a 100$ loss, its 100$ costs, and if compared to the BTC price, you end up with a 38$ win. If you did it that way, you calculated right, and i was just confused by the terms u used. But the point of my initial post was to say that there is really no way for energy costs alone to not exceed the value of the mined coins by far. So what i want to say: If you mine BTC with GPUs, even when not considering hardware costs, you will always end up "buying" BTC at a very very very expensive rate.
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visdude
Legendary
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Activity: 1081
Merit: 1001
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September 16, 2013, 10:09:40 AM Last edit: September 16, 2013, 11:44:48 AM by visdude |
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What part of "after all the operating expenses are applied" makes it "counting the coin's value twice"? I reiterate: if I ended up with a -$100 (loss) after all the expenses are subtracted, it stands that I have one BTC that cost me $100 (debit) which is actually worth $138 or so in the market.
Expenses are subtracted from what amount? If you subtracted from the coins value, like: 1 BTC: 138$ minus energy 200$ minus value decrease of hardware 38$ = -100$ than its not a coin which cost 100$ and is a good buy, its a coin which cost 238$ and is worth 138$, thus a bad buy which made you loose 100$. If you just list all expenses and get 100$, thats not a 100$ loss, its 100$ costs, and if compared to the BTC price, you end up with a 38$ win. If you did it that way, you calculated right, and i was just confused by the terms u used. But the point of my initial post was to say that there is really no way for energy costs alone to not exceed the value of the mined coins by far. So what i want to say: If you mine BTC with GPUs, even when not considering hardware costs, you will always end up "buying" BTC at a very very very expensive rate. Again, it's after all expenses (equipment depreciation, energy bill, etc.) are applied, i.e. if you create a balance sheet after producing one BTC, a -$100 balance resulted. However, an asset worth $138 has also been acquired in the process (1 BTC) in my example. That leaves a $38 profit ($138 less $100). Perhaps, I should have taken your post from my original quote; my post was in reference to my concept being similar to scooter's and not your post. p.s. I see your point though. It would not be a loss. I tend to isolate BTC mined and apply them last (since they are very volatile) in my way of accounting (more like ghetto accounting).
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jagallout
Newbie
Offline
Activity: 29
Merit: 0
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September 16, 2013, 03:24:41 PM |
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Is the website offline right now?
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