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Tried 2.5, 2.4 SDKs, no luck. Also 5770 is installed on my rig and CL is working fine for it.
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For example I'm spending ~100 kwh per month on my 5770 and 6870. Both are delivering 541 mhash/s. So, 100 kwh per month, or 3,333 kwh per day/24h, or ~0,139 kw per hour or 139 watt*h. And I'm stuck here. I should convert 139 watt*h to J (watt per sec) now? But then I'm getting crazy numbers, 500400 Joules. 541/500400 = 0,00108 Mh/J or Mh/W.  Or 541/139 = 3,89 MH/W? But then it's still incorrect Watt*H is not J. I'm something messed up here? MH/W is (Mhash per sec)/(W*h)? Whats then Mh/J on hardware wiki? Or 1947600 mhashes per hour / 500400 J = 3,89 MH/J . Correct? Then MH/J (or MH/W) means (Mhashes per hour)/(J or W)? Don't use MH/W. Use $/BTC mined. Easier to see if you are underwater. In your case, you probably generated 8+ BTCs and paid $10+ (per month). Measure power consumption at the wall for the whole system. 6870 is only 2 weeks old, so no idea how much Btc will be. Estimated around 10 with current difficulty. This month overall cost is 14,38$ (248 kwh) and higher on 80 kwh than month without mining. Your method of estimating power draw is going to have huge error in it. It's really going to be better to buy something cheap like a P3 Kill-A-Watt for $20 and use that to actually measure it. The Kill-A-Watt is actually useful elsewhere, so it's not like it's lost money to buy one.
Well, problem is it doesnt support 220v with european Schuko. Do you have a multimeter? A modern PSU has a power factor so close to 1 that you can safely just measure current and multiply it by your line voltage to get a power draw that will be quite accurate. Found this one. http://gadgets.masterkit.ru/product/42.htm |
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Your method of estimating power draw is going to have huge error in it. It's really going to be better to buy something cheap like a P3 Kill-A-Watt for $20 and use that to actually measure it. The Kill-A-Watt is actually useful elsewhere, so it's not like it's lost money to buy one.
Well, problem is it doesnt support 220v and european Schuko. |
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Thanks for explanation, guys. Yeah, 100 kWh isnt correct. Need to wait a month to get correct numbers (counting like that: kwh usage in next month minus year's average kwh/m usage before mining. should be more less correct). Plus I'm shutting down the rig for 2 nights per week, so its not a pure 24/7 work.
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For example I'm spending ~100 kwh per month on my 5770 and 6870. Both are delivering 541 mhash/s. So, 100 kwh per month, or 3,333 kwh per day/24h, or ~0,139 kw per hour or 139 watt*h. And I'm stuck here. I should convert 139 watt*h to J (watt per sec) now? But then I'm getting crazy numbers, 500400 Joules. 541/500400 = 0,00108 Mh/J or Mh/W. Or 541/139 = 3,89 MH/W? But then it's still incorrect Watt*H is not J. I'm something messed up here? MH/W is (Mhash per sec)/(W*h)? Whats then Mh/J on hardware wiki? Or 1947600 mhashes per hour / 500400 J = 3,89 MH/J . Correct? Then MH/J (or MH/W) means (Mhashes per hour)/(J or W)? |
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Fixed 1.70 rubles per kwh in Russia. Or 0,058 $.
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Я лучше подожду более эффективных fpga решений. Пока что c низкой ценой у нас за электричество брать ZTEX не выгодно, даже рискованно.
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Ah yeah. Thanks. Weird, I couldnt find it yesterday. |
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Removed? Cant find it. WTF.
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I've tried both custom and auto miners and cant get them to work. Failed connection.
which mining node and what mining software are you using? A few clues would help us troubleshoot  Mining with Phoenix, tried EU and US nodes, no luck. Always getting "failed to connect" message. Ok, found the problem! Had "http://" in node address (copied from the site page). After removing it, now its working as intended. |
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I am assumming you mean 5.7 cents per kWh because watts is a measure of power and electricity is paid per unit of energy. watt = power KW = power watt hours = energy kWh = energy If you pay 5.7 cents per kWh then FPGA are a non-issue (at least in the near term).The true metric is total cost of ownership over expected lifespan. So capital cost + all energy cost / # of hashes produced in say 18 months or 3 years. With very low power rates you can keep a low TCO without FPGAs. TL/DR version is all that matter is the total cost (equpment + electricity + repairs + labor/management) to produce 1 PH (1 quadrillion hashes) over the lifetime (either actual or economic) over the equipment (or life of under warranty replacements.To answer your direction question (some ballpark figures): CPU mining: .01 to 0.25 MH/W (totally uncompetitive at this point)
Unoptimized non-dedicated GPU rig: <2 MH/W (gaming computer w/ 1 or 2 GPUs that someone used for mining)
Optimized GPU rig: 2MH/W to 3 MH/W (requires good planning and part selection)
Underclocked & Undervolted rig: 4MH/W to 5 MH/W (requires good planning and part selection)
BFL Single: ~9 MH/W (unknown chp, my guess is it is a "last gen" 60nm FPGA)
ztex, 6500, Icarus boards: ~20 MH/W (all based on 45nm Spartan-6 FPGA)
RigBox: ~20 MH/w (untested specs, unknown chip)
Artix-7 based board: ~30MH/W to 40 MH/W (estimate based on theoretical improvement from 45nm to 32nm FPGA)
LargeCoin: ~200 MH/W (sASIC design, untested spec)
Full Custom ASIC: ~500 MH/W+ (theoretical estimate based on SHA-2 "testbed" processor)
Thats the info I needed. Thanks! |
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I am assumming you mean 5.7 cents per kWh because watts is a measure of energy and electricity is paid per unit of power.
Ah yeah. Sorry, messed up the numbers, had a few bottles of strong beer here. 28nm FPGA ~ 40 MH/W
LargeCoin (sASIC) ~200 MH/W
Custom ASIC ~ 500 MH/W+ This is actual stats of already tested units or another promo bs? Hard to believe to these numbers. |
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Wondering how big is the gap between them. Possible to get close to fpgas efficiency with gpus downclocking/undervolting? Should I really care about it if I pay 0.057$ per kWh and already have my gpus with 300 mhz underclocked mem/max undervolted?
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Well I never said it would rise however price of Bitcoin is based on supply and the reduced block reward means less supply coming on the market.
Say tomorrow gold production globally fell 50% what do you think would happen to the price of gold?
Still, theres plenty of coins to cover current market needs. And its not a fact that demand will rise in the future. |
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What's the ETA for the doomsday? And what if price of bitcoin will remain the same or will drop to 2-3$?
Why would price drop because supply is going down? And why price will rise? Price of bitcoin doesnt depend on block reward. |
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I've tried both custom and auto miners and cant get them to work. Failed connection.
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It's possible to set gpu, mem clocks/voltage with it? CGMiner is not an option, because don't support 6 series radeons mem downclocking and undervolting.
Nothing supports 6xxx series memory downclocking. You'll have to flash the BIOS in order to do that. You sure? ATI Tray Tools support it. Not sure about others ocing utilities. I'm mining currently with 6870:  BAMT does not support anything like this. You would have to do it in your gpu's bios. Thats sucks. Don't want to mess with bios. Well, Windows still rulz then. |
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It's possible to set gpu, mem clocks/voltage with it? CGMiner is not an option, because don't support 6 series radeons mem downclocking and undervolting.
Nothing supports 6xxx series memory downclocking. You'll have to flash the BIOS in order to do that. You sure? ATI Tray Tools support it. Not sure about others ocing utilities. I'm mining currently with 6870: |
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lodcrappo, can you answer my question?
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What's the ETA for the doomsday? And what if price of bitcoin will remain the same or will drop to 2-3$?
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