Hi, I purchased an HD 5970 from a user and would like to post feedback in his thread. Requesting the ability to post so I can leave feedback.
He bought it from me. I can vouch for PEMDAS. He is definitely not a newbie. Please whitelist him. |
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No, this won't work. This broken portion of the PCI-e slot does not cover the x1 lane. It includes other important and necessary signals: +12V power, +3.3V power, SMBus pins, etc. See http://en.wikipedia.org/wiki/Pci-e#Pinout The PCI-e lane signals are after the notch (to the right in your picture). You will really need to repair this portion of the slot to fix your card, for example by soldering individual wires from the broken gold fingers to a flexible PCIe extender. |
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Well my personal estimate is that they will do around 700 Mhash/Joule. So it looks like you don't disagree with me so much after all.
In any way, even if they achieved 700 Mhash/Joule, and do it late, this does not warrant you criticizing them as "bogus". 30% below expectation wouldn't be the end of the world. You and I have a different definition of this word.
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I dare you to find any post where I specifically state that BFL isn't going to deliver any product at all for certain. What is certain is that they are BOGUS in terms of made-to-believe efficiency and ROI.
So please, set an exact Mhash/Joule number below which you would consider BFL as "failing to deliver". Would they fail if they deliver 999 Mhash/Joule? 700 Mhash/Joule? 500 Mhash/Joule? 350 Mhash/Joule? (Mhash/Joule is the same as Mhash/s/Watt if this confuses you.) |
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Wow, ElectricMucus is changing his mind on ASICs! He previously said that the whole BFL ASIC project was bogus (back when BFL was the only vendor to have announced ASICs.) But now he seems to believe *someone* will ship ASICs eventually, just not in January. I am glad you are finally able to think rationally  You are desperately trying to twist the meaning of my post, don't try again. I said they will, fail on spec and don't deliver on time. I was right on the latter. Bogus enough for me. I never said they wouldn't deliver anything (although that is entirely possible) Being late hardly qualifies as being "bogus". This is simply incompetence in planning timelines (hardly surprising from BFL, hence why I gave my bet a deadline of June 30, 2013). You say I twist your words, but you words are vague. You keep saying "fail on spec". But technically this means you believe BFL could release an ASIC achieving 999 Mhash/Joule (barely "failing" their estimated 1000 Mhash/Joule). So, I would like to hear from you a Mhash/Joule number that you are ready to bet on. |
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Wow, ElectricMucus is changing his mind on ASICs! He previously said that the whole BFL ASIC project was bogus (back when BFL was the only vendor to have announced ASICs.) But now he seems to believe *someone* will ship ASICs eventually, just not in January. I am glad you are finally able to think rationally |
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I don't think anybody still believes that BFL is a scam.
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Because you can do things on a mac that you cannot do on 'easily' other hardware...
Let's say for example you are running Xcode, macs have the ability to run as a 'farm' service, that is to say that if you have a corporate network with macs, each and every one is able to share the processing power of the others and it is built right into the applications.
Just plug the shit together, its all automatic.
You are wrong. There is no "automatic farm service" in Mac OS X. If you are referring to the ability in Xcode to do distributed builds, well, it is a feature built specifically in Xcode, not in the OS. If you are referring to Grand Central Dispatch and the C extensions to do automated threading, well it is constrained to a single machine, there is certainly no "farm" support. |
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The block to hash is just 80 bytes with an average of 1 4 byte nonce for 2^32 hashes.
With a little protocol overhead, lets say 115 bytes/block, you can do 1000 blocks/second.
2^32 * 1000 = 4.2 THash/s.
No, RS-232 is typically 115 kbit/s, not kByte/s. Therefore: 125 blocks/s. You could also implement roll-n-time on the device, and return to the host shares with difficulty > 1. So, all in all, it is hard to put an exact number on what is doable on RS-232, but it would be sufficient for many tens of TH/s. But seriously guys, I don't see the point in using RS-232. USB is trivial to implement with supporting microcontrollers. Which is why ALL FPGA miners use it. The Altera Cyclone III dev kit supports USB if I am not mistaken. |
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Price reduced to $30. Come one people, this is dirty cheap!
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I suggest mods to lock down this thread for 48h+ in order to let posters "cool down".
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The mining basically exists for the bitcoin may exist, if you want to sell your bitcoins in another currency that is not essential to being a miner ...
Bitcoin in general is a relatively risky / speculative market, even if you don't exchange bitcoins. If Bitcoin loses its value, you won't be able to buy goods/services at the BTC price you think they would be priced at. |
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Trying to figure out how this number makes sense..
2012: 60,896 trillion BTC sent
60,000 trillion, with only 10 million btc in circulation, with 365 days in a year...each bitcoin is transfered over 16,000 times a day. If it was 10 times a day I could see it, but every bitcoin moves 16,000 times per day .. that doesnt seem to make sense.
It is a simple total of each bitcoin transaction's output values, from Jan 1 2012 to Sept 10 2012. This still doesn't make sense. Or else it would mean the average output of a transaction is 12 billion BTC(!) It sounds like your calculation is off by a factor of 100 million (you counted satoshis instead of coins). IOW in 2012 the total tx output is only 608.96 million BTC, making the average output of a transaction 122 BTC. |
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Engineering is speculation? Since when?
Can you predict the future BTC exchange rate? No. Therefore mining is speculation. |
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I value 5870 at $100 or less, not so sure on the 6950. But, probably not going to swing $140 or so when 5970 are available for $200 + shipping in another thread.
Probably my thread you are talking about. I can do $211.35 for a 5970 never used for mining/gaming as it was recently refurbished by XFX for a warranty exchange -> even more 'pristine' than yochdog's cards  . This includes shipping to the Lower 48, since a medium USPS flat rate box is $11.35. |
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So no different then the main 3 asic companies here on the forum then! Unless of course you can show me proof they have an actual product. Nah. They dont either.
You don't believe BFL will release an ASIC in the short future? |
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I find it funny that they bothered buying an HTTPS certificate valid for 3 years. Do they think that they will still be running their scam 3 years from now? Or do they think some potential customers will see the 3-year cert and think "oh surely they must be legit as they have a 3-year cert"? |
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