I guess this is the case. I have tried researching a PSU that supports x4 5970s but haven't really found anything that is conclusive. There just isn't any info out there.
If I had to toss a coin, I'd say that a 1200 Watt Corsair or Antec might do it. Might. However, it appears you are using the MSI 890FXA-GD70 motherboard. Though it has five PCI-E, they appear stacked right next to eachother. I tried TWO right next to eachother in my MSI Big Bang, which has as many or more slots, and found that putting cards in two adjacent slots caused the heat to go WAY up, perhaps 10-15 degrees on each card, causing malfuncitions. The clearance between the cards is minimal, so I have no idea whether aftermarket cooling is an option. I had to space the cards out enough that I don't think I could get a third one in there without more spacing between the slots. If you get 4 cards in one box working reliably, please say what the trick is. I noticed about 91 degrees is about where my 315khash begins to fall apart on each core. Also, I did find that things run well at 99% GPU, but when I get to 100% GPU it falls to about 200khash/second momentarily until it drops to 99% again. This is due to the increased heat just a couple of degrees above 91 C. If I turn the clock DOWN, the GPU will cool, stay at 98-99% and give me a consistent 315khash again. If you get higher numbers, let me know your settings. What I have done when I tried 3x 5970s was to not screw them into the case, and stick pieces of a plastic drinking straw in between the gpus in order to create room for airflow.  This is from blog.zorinaq.com. Sorry for the insanely big picture.  |
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With 4 5970s, which PSU are you using? I assume the 1200 corsair I have only supports 2 because not only does it say on that ATI website I previously posted that it only supports 2, but I have tried using it with 4 and 3 5970s and it didn't work.
Check online and find comparisons and reviews especially if it's something you are buying online and can't try out and easily return to the store. I am an extreme cheapo when it comes to components but this is one area where you cannot just compare Watts and price. Trust me. I guess this is the case. I have tried researching a PSU that supports x4 5970s but haven't really found anything that is conclusive. There just isn't any info out there. |
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I may be able to provide baconbits invites for a certain amount of coins, I'll have to look into it though.
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I want mine to first play a cash register noise at 100% volume, followed by a deep, low voice saying "Show Me the Money!", followed THEN by various pictures of playboy models. Fireworks shooting out from behind my monitor are optional.
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I had something similar with an older ASUS A8N32-SLI where it would not recognize 2 5970's. Then I realized that CCC was only showing one enabled that I had plugged the monitor into. Thus, I would plug the monitor into one 5970 and start the program for device=0 and device=1 and that 5970 would work. Then I'd unplug the monitor from the first 5970 and plug it into the second one and which point I'd rerun the program for device=0 and device=1 again. That's the only way I could get it working in four DOS windows on Win7 x64. My newer MSI Big Bang mobo runs all four in SLI mode with the SLI cable connected on Win7 x64.
You may try plugging your 3rd card in, get the first two working then plug the monitor into the third (check in CCC to see if it went active) then try running the program on the third board. Could work.
Yeah, I figured something like this would work, as it did when I had just one 5970 and a 5770 together. But, I tried it out to no avail. With 4 5970s, which PSU are you using? I assume the 1200 corsair I have only supports 2 because not only does it say on that ATI website I previously posted that it only supports 2, but I have tried using it with 4 and 3 5970s and it didn't work. |
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What are good settings for a HD 5970? I just added -v -w 128 and it increased each GPU from 270MHash to ~280MHash.
That's about as fast as you'll get fiddling around with the flags, in my experience. |
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Ok so I am assuming since this PSU is "certified" for only 2 5970s, that is why having 3 wouldn't work. I took one out and the 2 show up in poclbm now.  Perhaps you should try powering one machine using 2 PSUs. However you need to connect the "ground" wire from each of the PSUs together first, as otherwise it won't work. There are easy schematics on the web about how to do that. EDIT: Oh, it seems there is even some vid on youtube explaining how to do that... http://www.youtube.com/watch?v=BviJjNYsIagYes, I have thought of that before. Going from this blog post: http://blog.zorinaq.com/?e=42You can either do all of that fun stuff, or just buy one of these: http://www.frozencpu.com/products/5637/cpa-167/Lian_Li_Dual_Power_Supply_Adapter_Cable.htmlfor $14 USD I will take a look at what you are talking about though. It can't be too difficult. |
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Ok so I am assuming since this PSU is "certified" for only 2 5970s, that is why having 3 wouldn't work. I took one out and the 2 show up in poclbm now. |
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May I ask if this guide will work for multiple ATI 5970s?
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I presume you are running Linux based on your avatar. Did you set the DISPLAY=:0 environment variable?
You presume incorrectly Win 7 64bit until I take the time to decrypt this 1.5TB drive, which is 36-48 hours or something crazy. Then I shall dual-boot or get rid of Win 7 completely. edit: Just checked the most recent drivers: they are 11-1 while I still have the 10-12 preview drivers. Going to try them out. |
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I guess that if Bitcoin becomes more popular, then AMD GPU selling will skyrocket.
So, I tried the new PSU on the old mobo, same thing happens as before...no video signal. Tried the new mobo with new PSU and I now have 3x 5970s running, but poclbm is only seeing one card, I think. I reinstalled the video card drivers and now am reinstalling Steam SDK 2.3. CCC says every card except the one is disabled. Definately a weird shit. Probably one of the weirdest i have seen yet. Yeah, its probably some weird bug in their bios which will most likely be fixed in a couple months now that I've started a thread on their forums about it and what not. |
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Does anyone have experience or opinion with regard to running Bitcoin on a PC that's been encrypted with Truecrypt? The OS is Ubuntu 10.04 LTS.
I have been running bitcoin on my windows 7 64bit computer with full-disk encryption for a couple months now. No offence here, but you look pinguish. Shouldn't you be saying "I have been running bitcoin on my Slackware 64bit computer with full-disk encryption for a couple months now." ?  I would be...but it takes days to decrypt a full 1.5TB drive, I just haven't gotten around to committing the time yet lol. I will most likely end up putting some form of unix on here as I won't be playing computer games on this rig anymore. |
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I guess that if Bitcoin becomes more popular, then AMD GPU selling will skyrocket.
So, I tried the new PSU on the old mobo, same thing happens as before...no video signal. Tried the new mobo with new PSU and I now have 3x 5970s running, but poclbm is only seeing one card, I think. I reinstalled the video card drivers and now am reinstalling Steam SDK 2.3. CCC says every card except the one is disabled. |
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Does anyone have experience or opinion with regard to running Bitcoin on a PC that's been encrypted with Truecrypt? The OS is Ubuntu 10.04 LTS.
I have been running bitcoin on my windows 7 64bit computer with full-disk encryption for a couple months now. |
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Are you going to try the old mobo with the new PSU? I'm curious to find out what the problem actually was.
Yes, I will try that out. The computer's going under the knife now, I'll let you know how it goes. |
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Did you try plugging into the onboard DVI connector?
No, but I don't think that would help. When my mobo posts, it makes a beep noise. If I put in both 5970s, there is no beep or video signal. So, I assume, that for some reason the two 5970s are causing some kind of crash to happen within the bios, or I just do not have a supported PSU. It is quite common that some motherboards are buggy and don't support certain PCI / PCIE setups. For example, my motherboard does not support my soundcard, when it is inserted in the first PCI slot. From what you have said I am 95% certain, that the mobo is at fault. The new motherboard I ordered came in today (used by http://blog.zorinaq.com/ so I know it can work) along with my 1200 watt crossfire certified psu which can supposedly support 2 5970s according to this: http://support.amd.com/us/certified/power-supplies/Pages/details.aspx?item=519 |
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When medicine reaches a point where we live much longer than we do now, overpopulation will eventually occur, even when limiting offspring. When food sources and energy sources become abundant for everyone, not just those who are born into the right time and place, there will be overpopulation.
It is not what show empirical facts. Longevity does not compensate for decreasing natality. This is called "Demographic transition" and so far it has never led to an increase of population. If women make less than 2.1 children, unless people become immortal, then there is just no way this can not result in a dramatic collapse of population, possibly extinction. It is just a pure mathematical law. The number of fertile women will decrease geometrically, and noone can know how much it can lower until women start to decide to make more children. Population dynamics is much more complex than you seem to think. Things have changed since Malthus, you know. Do you know for instance the chaotic behavior of the logistic sequence (u_{n+1} = \alpha u_n * (1 - u_n)) ?? This equation is a basic model of a demographic evolution. Basically it states that the future population number is proportionnal to the present one (which is logic since there are more fertile women), but with a proportionnal factor that tends to decrease when this number reaches a limit (which can happen for instance when people are afraid of overpopulation, as you seem to be). I am not afraid of overpopulation. I am just aware of the fact it is more possible than you think. When there is an abundance of food, medicine, energy, and renewable resources, there will inevitably be an abundance of humans. By abundance in terms of resources, I mean 99% of the Earth's population can live a complete and healthy life instead of how it is today. There would be no need to kill for food or shelter. Everyone is well fed. When that is achieved, I believe there will be overpopulation because what else would you do besides have sex? |
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What is so crazy about wanting to move to Mars? Even Stephen Hawking said the future of humanity lies in colonizing new planets. You don't really think humans can continue to destroy Earth while at the same time increasing in population size forever, do you?
Human population won't increase forever. We're not rabbits, and we have contraception. Developped countries have shown than when women have the choice of the number for their offspring, they make less children than what is necessary for renewing generations (2.1 children). Overpopulation is only a short term problem. We should rather fear the demographic crash that will follow. At some point, we will have to move to other planets or , for example, that ice moon of Saturn or whatever planet it is a moon of. Starting the development of the means to get to those planets as soon as possible, I think, would benefit mankind as a whole much more than waiting until we are bursting at the seams here on Earth to start the process.
This is just science fiction. It is also a weird point of view. You're advocating for a goal that you will never witness. Who does that? Why should I wake up in the morning and go to work in order to finance something that only humans in several centuries will enjoy? This is a ridiculously huge social abnegation. Just as silly as an ant which sacrfices itself for its queen. I dare say that I'm not as silly as an ant. If you want to work for mankind, I advise you at least do it for present mankind, not for the mankind of a very hypothetical distant future. It is not a weird point of view. It is a logical point of view. When medicine reaches a point where we live much longer than we do now, overpopulation will eventually occur, even when limiting offspring. When food sources and energy sources become abundant for everyone, not just those who are born into the right time and place, there will be overpopulation. Why does living on another planet = fiction? Look at the device you are using to communicate with me at this moment. 1/100000th of that computing power took us to the moon. People now have ocular and auditory implants. Today's science fiction = tomorrow's reality. |
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The giant trash island floating around in the ocean, the many land fills that will eventually need to be taken care of, nuclear waste that lasts thousands of years and must be buried underground which could leak into the water supply, I could go on...  Landfill can be valuable resource. Trash islands are a result of tragedy of the common, but one way to fix this is to have biodegradable plastics. There are proposals on way to recycle nuclear waste. State an example of how landfills can be a resource. You cannot fix the problem of the trash island by creating even more plastic, biodegradable or not. It will float on until we go out and somehow clean it up. The problem with plastics is that they enter the food chain as poison. I was proposing we should make them harmless. My solution is to merely change the type of plastic, not increase the amount of trash thrown into the ocean. Landfill can be used to create methane gas. Yes, creating new plastics that are not harmful is definitely a step forward. But, what about all the plastic out there now that is harmful? It degrades over hundreds, possibly thousands of years. We are stuck with it. It does get into the food chain and because of that, we most likely have trace amounts of BP-A in our blood. There's no plastic on Mars......yet. |
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