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That's the point, I am asking for i0coins, not bitcoins. I want people to use it! People go crazy spending $700 on 5970s, surely they can bother reading up about i0coins and making a transaction to buy mine, can't they?
(i0coin is spelled with a zero, not with an o, in case you want to google it.)
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Correct me if I'm wrong though, but i thought the 5x series was superior to the 6x series. Bitcoin hasn't seen a huge jump in over a 'generation' of hardware. And when the 7x does hit it'll divide the miners into the 'haves' and 'have-nots', similar to the divide between cpu/gpu mining when that first hit. But i'm still gettin my bitcoin history straight, i could be off.
Both the 5000 and 6000 series are 40nm, there is no big difference between them. The 5000 series cards are somewhat favored because they are less expensive, but that's all. We already witnessed a technology gap between the 4000 series (55nm) and 5000/6000 (40nm), dividing people between the haves and have-nots. The 7000 series will simply create yet another similar gap. |
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This is why I'm not so sure everyone buying up those 5970's and 6990's the last few days at $500+ knew that these were (in theory) just right around the corner...
"Right around the corner" == "multiple months". Any large-scale miner (10+ Gh/s) constantly scaling up and up simply cannot afford to sit idle on his mining profits for this length of time. Also, people saying that the dual-GPU 7000 series doing ~1.5Gh/s will "change the mining game" are exaggerating. This figure is correct but this is only twice better than a 5970s or 6990s, or business as usual in the GPU industry. (The last manufacturing nodes 55nm -> 40nm -> 28nm roughly doubled the number of ALUs per square millimeter each time, hence doubled the mining speed for the same power envelope). |
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The wallet stealing is the result of malware which spreads in the usual ways: email attachments, malicious websites, or Trojans hidden in freely distributed software (including rogue versions of Bitcoin utilities). We don’t have the remote exploits like Blaster any more.. in fact if you read to the bottom of the link you posted it says it only really applies if your OS is from before September 2004.
Exactly, and believe it or not, many in the Bitcoin community run this 10-year old OS: http://www.google.com/search?ie=UTF-8&q=site%3Abitcointalk.org+windows+xp |
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Who has their computer connected directly to the Internet? As evidenced by the many stories of stolen Bitcoin wallets, I think that people in this community need some security education. I bet that some people connect their rig directly to the Internet, or have a Windows gateway sharing the Internet connection, etc. |
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I'm sorry, but what? How the fuck would you get malware (unless you specifically set out to do that) in the time it takes to download drivers and install mining clients
It was shown that it takes just a few minutes for example for a fresh Windows XP install to get infected by malware by simply being connected to the Internet. Example: http://blog.chron.com/techblog/2008/07/average-time-to-infection-4-minutes/More recent Windows versions have fewer known remote vulnerabilities out of the box, but still. |
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In Windows, applications sometimes reconfigure the rate of timer interrupts from 100 Hz to 1000 Hz for more accurate timekeeping. For example the Oracle JVM does this when calling Thread.sleep(). Perhaps CrystalDiskMark does the same, in which case your first guess would be right: you are simply observing more accurate numbers. Check the rate of timer interrupts with perfmon.exe.
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The "Bruce Wagner = Tod Williams = Tom Williams" seems tenuous at best. Curious to see where this goes, though.
Just like most other large scale scams, there are almost certainly multiple persons behind the MyBitcoin scam. It was so well prepared ahead of time (1+ year of effort), so well organized, etc. For example the Bitcoin Police did a pretty good job of linking MyBitcoin to Dalin Owen: http://bitcoin.crimeunit.net/wiki/index.php/MyBitcoin_Summary- Dalin clearly has the technical skills to develop the technology running a site like MyBitcoin, especially given the technical security measures that were deployed behind it, his background in online security & anonymity, his confessed association with Privacy Sharks, etc.
- Bruce would have the entrepreneurial mind and creativity to invent MyBitcoin, plan the operation, manage it, promote it via his show, etc, especially given his confession of running Bold Funding Inc and public court records demonstrating he defrauded his customers.
Therefore one could imagine Dalin and Bruce (and perhaps others) being the guys running MyBitcoin, with Tod/Tom Williams being an alias used by either Dalin or Bruce over multiple years in different situations (the brain is a poor source of entropy, people inventing fake names re-use the same ones, etc). (There is so much drama and so many stories happening in the Bitcoin community, wow.) |
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dual GPU cards, 1600 stream processors or more per GPU, 64mb memory clocked between 200-300mhz, pci-e x1 (intead of x16), and reference type coolers.
dual GPU cards are the most efficient in terms of space and power because they share the components on the board, like memory, vrm's, and such. majority of hardware mining performance is based on stream processors, currently the highest is 1600sp from the 5870, so either match this amount or higher. the upcoming 7000 series cards will have a 28nm die shrink, so they should be able to fit more stream processors in the same amount of space. mining does not use a lot of video memory, so as little as possible while still being operation. i think 64mb is a good medium. lower memory clocks helps with temperature and power consumption. and lastly, with reference coolers, there's directional flow of the heat. it all gets exhausted to the rear (or out to the back of the case if it's enclosed), where as non reference type of coolers blow heat in all directions. when you stack these in a mult-GPU setup, they use each other's heat, and usually the top card always has the highest temps.
btw janathan, are you still mining with those 6950 setup you showed me? or are you done with that "experiment" and only hosting Bitcoinduit now?
Also, design the optimal graphics card so that: * It pulls most of the current on 12V from the PCIe 6-pin and 8-pin connectors, instead of pulling it from the slot. Otherwise you have to perform this kind of hack to properly power an 8-GPU config: http://blog.zorinaq.com/?e=44* It has a fully software-configurable GPU voltage, on a wide range from 0.5V up to the normal 1.1-1.2V, without the need to flash the BIOS. Lower voltage increases performance efficiency. |
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Amazon advertises Bitcoin mining, woohoo! Technical Details
ATI Radeon 5970 PCI-E / PCI Express x16 Video Graphics Card Radeon HD 5970
Dual GPUs (Graphic Processor Units) with a total of 2GB GDDR5 Memory
Superior Gaming and Bitcoin mining performance
Multiple Monitor Support - Dual DVI and Mini Display Port
DirectX 11 and OpenGL 3.2 Support
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I just posted a new "idea" for discussion on the TED website... Bitcoin and it's ramifications seem perfect for the TED audience and I imagine many people would be quite interested to see a TED talk on this. I'm approaching it from a "how could this effect the developing world as it relates to globalization" angle. I'd encourage you to post your comments: http://www.ted.com/conversations/5293/bitcoin_commerce_without_bor.htmlThe page seems to have been deleted! |
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There is nothing mandatory about this release. In a decentralized currency environment, the users are the ones making the decision to upgrade or not. In fact, they can take the ixcoin block chain wherever they want and reject your rules  |
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Pipesnake: ETA is mid-September. BkkCoins: There is only 15 usable digital outputs on the PIC-WEB's EXT connector ($50 in the US). Plus you would have to design a separate board for the SSRs and their resistors ($15). In the end it would be twice more expensive per controllable computer ($65 for 15 computers) compared to my solution ($100 for 45 computers). About those 4 things:
- I want SSRs because I want the electrical circuits to be isolated, for safety. A motherboard or PSU going up in smoke and sending voltage spikes through the power switch wires shouldn't fry my AVR or the 44 other remote-controlled computers...
You can use any optoisolator, doesn't have to be an optotriac.
Find me, on Digikey, any type of opto-isolator comparable to my SSR: $0.75 or less for quantities of one hundred, and that operates with an input current of 1mA. I would be delighted to be shown there is one. - If using transistors, the user would have to know which pin of the power switch is + and which is -, increasing setup complexity for non-technical users.
If they cannot figure out which pin is the pos/neg [...]
I may sell assembled kits and don't want to tell my clients "GTFO if you don't have a multimeter". I am like Steve Jobs, I care about ease of use  - My SSRs are cheap ($0.75 in my quantities)
Sounds like you are buying the optotriacs...small components of SSR's that are use to trigger the bigger Triacs in a SSR circuit. If you were building an SSR that would switch the PSU current you would be looking at around $5/SSR minus the board (and snubber).
Nope. These are plain standard SSRs. Just go look them up on Digikey, there are plenty in this price range. Once again, I am controlling 5VDC, not 120VAC. I have not seen this pb. When I stop applying voltage, the SSR output circuit opens... |
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They are not on the AC side. They control the ATX motherboard power switch (so 5VDC).
Ahh, sorry misunderstood since you were talking about isolation. There's really little danger of voltage spikes over the power switch pin - when was the last time you saw or heard of a fried PC power button?  A diode on the transistor base pin would keep it pretty safe I think, but diode+transistor is pretty similarly priced to your SSRs unless you're buying them in bulk anyway. Good luck to you, it may be slightly overengineered for the purposes here, but I wouldn't dare kit whatever I'm about to cobble together here with transistors, you're in a better spot for it Power switches don't fry. But it doesn't mean the 5V standby voltage they are connected to remains perfectly stable or safe, especially given the power supplies failures reported in this community... If you can have safety and user-friendliness for $0.75, take it |
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- My SSRs are cheap ($0.75 in my quantities)
What SSRs are you getting so cheap? When I was looking for these it seemed impossible to find something that could handle >6A for any reasonable price.. how much load are yours rated for on the AC side? They are not on the AC side. They control the ATX motherboard power switch (so 5VDC). |
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You don't need SSR's for the front panel switch...its just DC unless you are switching the supply in which case I don't think the necessary Triacs/Optotriacs can be purchased for 2.20/unit. AVR's are cheap too though.
One arduino mega would switch 54 (also avr based). More if you did some sort of multiplexing.
At any rate simple transistors are fine.
4 things: - I want SSRs because I want the electrical circuits to be isolated, for safety. A motherboard or PSU going up in smoke and sending voltage spikes through the power switch wires shouldn't fry my AVR or the 44 other remote-controlled computers... - If using transistors, the user would have to know which pin of the power switch is + and which is -, increasing setup complexity for non-technical users. - My SSRs are cheap ($0.75 in my quantities) - One Arduino Mega would be twice the cost of my AVR board (about $50 vs. $25) |
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I designed a USB device that can remotely power cycle 45 computers. Total cost in parts is about $100, or $2.20 per computer. This is much more computers and much less expensive than any commercial solution. It is based on an AVR microcontroller, and SSRs connected to the power switches via standard cheap cat5 cables.
Watch my blog for a future announcement. I am probably going to sell kits.
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ECS P45T-A requires it, but the board also got toasted after a few days, so I wouldn't suggest it. It failed for another reason. Pins A1-B17 are meant to be shorted. Perhaps you pulled too much current on the motherboard's 12V rail. |
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