I would first contact BFL and ask them for a suggestion of what to purchase. You don't want a 600 dollar investment going down the drain in consequence of purchasing the wrong and or cheap PSU.
Dalkore
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No actually, I own only about 10 machines with dual Xeons in them... just that they dont mine.
Of course if you think the numbers are wrong, maybe you should just point it out?
Lovely, lets also assume each GPU is watercooled as well (since you just pulled 2800MHash/s) But thats ok, i'm the owner of Koolance. What the point when you can just assume i paid $0.07/Kwh, get whole sale price for parts and a datacenter equivalent of power grid. I would love to see where do you live that you can pull 9Kw of power without major rewiring. You argue you rather operate a delivering business by using 10 Civics instead of one Semi-truck. Its amusing when you can get the civics at dealer cost as well.. Then complete omit the management cost, drivers' salaries and maintenance cost. 9000W really isn't that much, it's only around 40A. I could easily install that on my existing panel without upgrading my service, and I don't even use electricity for heating. Dealing with 9000W of heat is a much bigger challenge that providing electricity to GPU farm. Not everyone use 240v. You might not need to upgrade your panel, but wiring isnt just your panel. On normal 120v (single phase) it would be around 75 amps to support this. Most houses would need a major rewiring including decreasing the wire gauge to support this draw unless you used multiple 20 amp circuits on 14 gauge wire into your server room. On the other hand, if you used your dryer circuit which is usually 240 (2 phase), they are likely between 40 and 50 amp circuits and that would work as long at you used like 10 gauge wire or less into your room. .02 BTC
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This video is very important. He really underlines the risks of bitcoin and why is will have trouble really becoming mainstream. The serious thinkers and supporters of the Bitcoin project should watch this video (I have twice) and contemplate what he is saying. I used to work in the ACH department of a major bank (top 5) and he is correct on the point that having that centralized control gives you "a lot" of power. I handled mainly Vegas casinos and state lotteries and you wouldn't believe how much money I would transfer on a daily basis.
If we are really honest in our support of this system as a way to lower transaction costs and provide a true alternative. We will need to start looking at self-regulation and paying our taxes proactively to show we are serious in being a viable member of the financial community. Sure, I would love to think we will just be allowed to grow and continue to be un-regulated but in reality, that is not the case. What we can control is what we do as a community to help shape this upcoming regulations so we can still innovate.
If you are in the camp where you think, "f*** that, money is mine and I can do whatever pleases me", then you are going to wake-up to a reality sooner than later and then you will have to make the personal decision if you want to still participate in the market will surely will become more underground unless we step up and start dealing with the major issues on why Bitcoin will have hardcore rules made against it with stiff penalties to boot. I have some ideas I want to explore.
Thoughts? Please bring your friends on here into this post and lets get a discussion going, we need it.
Dalkore
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If that business isn't here in 300 years can we sue? and what about laminating the paper and locking it in a (large) safe? wouldn't that last longer then digital data that is susceptible to EMI? CDRs should not be affected by EM attacks. Heat would though. I am buying some of the above mentioned CD-R discs. People seem to forget that with the mass production of writable digital mediums, the shelf life has really come down. Thank you for the link.
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It really makes me smile when people like Zhou take responsibility for their part and explain to the community on what happened so others will learn from this wisdom and bring good will back to this brand. It shows class and I hope this type of mature behavior spreads in this community, make it the best on the planet. I am proud to be a part of this and in my business venture coming online very soon, we are going to take the same level of communication and honest information.
Thank you.
Dalkore
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You install AMD SDK 2.6 right?
No need to install with 12.3. Already comes with newer OpenCL drivers. This is correct, it comes in the package. I have 2.6 standalone as well.
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Please try to install MSI Afterburner or GPU-Z and monitor your clock frequency. It's possible that one GPU is running at a lower clock frequency.
12.3 worked as in now they are both giving around 550 each, which is around stock. Now I am using CGminer and it doesn't seem to implement my gpu changes like lowering the memory clock, lowering the voltage or changing the core clock. I have 12.3 install and no afterburner. What would cause this? Do I need to modify the config file instead of doing through the command line? Thanks much, Dal
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I went to ATI and got the latest version from them.
That should be fine. I've found that 12.4 has a very peculiar bug with my tri-fire setup. Namely that my 2nd and 3rd GPU both run at 50% (and get half the hashrate) 12.3 resolves the issues for me. Thank you kindly. I uninstalled 12.4 and afterburner and just installing 12.4 only. If that doesnt help then you have given me my next option. Please keep the suggestions coming Thank you. P.S. Your right, once you CGmine, you never go back. Command line I love you!!!
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UPDATE:
Ok I am now running CGMiner and I think I have the hang of it. This is what I am seeing on the slow card it is showing:
Engine Clock 500mhz
Memory Clock 150 mhz.
Vddc: .950
Powertune: 1%
Activity: 53%
Now I see the problem but when I change the values is does update on this GPU. What would prevent CGminer from changing these values?
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I believe the gpu being stuck at 2d clocks is a driver issue.. not a miner issue.. but who knows....
Recommended driver for a 7970? Should I use the disk it came with? I went to ATI and got the latest version from them.
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Lower speed and higher temps? That seems a bit odd. Throttling?
I thought that was odd as well. GPU1 is running at 69 degrees, 91% gpu usage but only 280 mhash? Is there any setting in Afterburner and Catalyst I need to make sure i have on or off? When using cgminer.. I do not use afterburner or even install the catalyst control center..... Everything can be done from cgminer So what you are saying is the my miner is the reason for this slow down? I am going to upgrade to CGminer then. I am just surprised this piece of software would run one GPU at 50% of another.
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Lower speed and higher temps? That seems a bit odd. Throttling?
I thought that was odd as well. GPU1 is running at 69 degrees, 91% gpu usage but only 280 mhash? Is there any setting in Afterburner and Catalyst I need to make sure i have on or off?
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You should try cgminer What do I need installed to run it? Also, are you saying this is the magic bullet? Can someone please look at those settings and see if any red flags are there? Thanks Much, Dalkore
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Community.
I built a miner last night and today I am testing it out and I am getting 271 from GPU1 and 541 on GPU2. Windows 7 32bit, GUIminer, Catalyst 12.4, Afterburner.
What would make GPU1 run so much lower? Its almost 50%.
Temp on GPU1 - 67
Temp on GPU2 - 43
Note: GPU1 CPU usage is showing near 94% and GPU2 is between 90-100%
Voltage Settings in Afterburner
Core Voltage - 962 Core Clock - 1000 Memory Clock 710 Memory Voltage 1600
Please let me know where I need to start trouble shooting? Thanks
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That is not bad actually for a 1Kw. I am using a PC Power & Cooling 80 Silver for the system I am working on as we speak.
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No. Phoenix is a mining program, similar but not identical to CGminer, that allows you to choose from a limited selection of kernels. I have also found it to be faster, but probably slightly harder to use, at least in the command line version.
If you feel adventurous, I'd suggest giving BAMT a try. It's a Linux distro (Debian 6) specially set up and optimized for mining. I've found it efficient and stable. Configuration is a little challenging if you have no Linux experience, but the advantages are well worth it.
Bamt seems to be down. Is there any mirrors or could someone link me the lastest version?
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CGMiner is better than GUIMiner
I use GUIMiner with phoenix dropped in as the OpenCL miner. I get better hash rates with this combo than both CGMiner and DiabloMiner. I also get a more responsive desktop. Using a saphire 5850@666/150/0.95v kind regards What is "Phoenix"?
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Electricity is only $0.03/kWh Heh, that's nearly free. Yes, that gives you an advantage over competitors for Bitcoin mining then. Where is this?, ... that's really, really low! With that low of an electric rate, you'ld probably be better off getting some used GPU hardware now and start mining now than waiting for an FPGA (in a purely financial sense). My main worries is, what will happen when the block reward halves? Shouldn't the exchange value rise in compensation due to a decrease in supply? It's not a surprise though to most speculators, so it may already be priced into the current exchange rate. Additionally, it could be the event that many GPU miners are holding out for and when it occurs, they will dump their GPUs for bitcoins and spend their hoard of bitcoins on new hardware, whatever that hardware at the time happens to be (new FPGA design, or ASIC, or whatever). That might put as much downward pressure on the price as the lower new supply (3,600 BTC fewer issued, per-day) would cause. I am starting a mining company and we already have a location that has even lower rates.
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Ive poked around a bit, but cant really find any numbers. Im just wondering what kind of amount of data an 800M/hash miner generates. (or any size if you have the stats)
Kind regards.
Barely anything from what I have read and asked a few people with knowledge of the process. Basically you are getting a math problem, crunching it locally and then sending out an answer. Correct me if I am wrong please. Dal
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Looks like the cross method was the best overall in the demonstration video.
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