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at 125btc it will _never_ ROI. Even at 80btc its hard to make a roi.
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Exciting, looks like amateur hour is almost over. Might miss this on their website, but CoinTerra has partnered with Open-Silicon for their ASIC design: http://www.cointerra.com/cointerra-selects-open-silicon-for-next-generation-bitcoin-asics/----------------------- CoinTerra selects Open-Silicon for next generation BitCoin ASICsJuly 24, 2013 Austin, TX. – CoinTerra, a company leading the next wave of silicon-based BitCoin mining, today announced that it has selected Open-Silicon as their ASIC design and development partner. Selecting Open-Silicon paves the way forward to building the highest-performing hashing ASICs available in the market, which consume only a fraction of the power consumed by other mining ASICs. CoinTerra’s world-class expertise in ASIC architecture combined with Open-Silicon’s track record in ASIC solutions – including design and manufacturing – is a dynamic blend, which will soon result in bringing the most advanced bitcoin mining products to market. “We selected Open-Silicon because they bring years of experience in getting working silicon to market” said Ravi Iyengar, CEO of CoinTerra Inc. “When you are designing ASICs at the 2Xnm node and below, you need a partner like Open-Silicon who has completed over 300 ASIC solutions, shipped more than 75 million ASICs, and has an outstanding track record of meeting their committed schedules on time.” “Our expertise and years of experience are well aligned with CoinTerra’s technical needs,” said Dr. Naveed Sherwani, President & CEO of Open-Silicon, Inc. “It is great to work with a company that understands its market and thinks far ahead about their needs and requirements in order to achieve their short-term and long-term goals, ” said Dr. Sherwani. /Sarcasm on: Oh they chose Open -Silicon! YAY ! /Sarcasm off Who the Hell is open-silicon? I mean, it's just another company name. Does not help at all to make this look a bit more legit. just read. Open Silicon is not a "small fly". |
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(although remember Intel does more per core then AMD, so an 8x Intel will be about as fast as 16x AMD cores - but probably much more expensive)
sadly thats just true on multithreaded integer operations (xeon e5-4650 vs opteron 6386SE - 3000€ vs 1400€) if we are talking about single threaded integer operations the xeon is nearly twice as fast as the opteron. in nearly every other operation the xeon is 20-40% faster than the opteron. EDIT: AND Core i7 dont support Multi CPU Enviroments. If you want more than one CPU, you need Xeons  |
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But PayPal send me a email: "We will check your account in 30 days again. At the moment too many people are asking for refunds"
Thanks to BFL for that  |
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not happy about not sending an email when the shop opens  order went through though .. |
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Safari worked like a charm. Hit the order button and got 404  |
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the avalon datasheet stats 2^32-1 as maximum clockrate.
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i am excited about all those overclocking possibilities... but i also think that 450mhz might be pretty close to the end of the line. on the other hand, i had some cpus on hand which made more than 4ghz, while having a stock frequency of 1.8ghz... More voltage solves nearly any problem 450MHz IS the end of the line. Thats the clockcap per design of the chips. oh well then ... |
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i am excited about all those overclocking possibilities... but i also think that 450mhz might be pretty close to the end of the line. on the other hand, i had some cpus on hand which made more than 4ghz, while having a stock frequency of 1.8ghz... More voltage solves nearly any problem |
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First thing - have your unit(s) behind the firewall. Right?
err...... I think so... I'm using the one that comes with Windows 7 but I'm bet you will reprimand me for that....any recommendation? do you have any router connected to your pc/avalon? |
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Why are Gridchip's 40 nm chips suckier than BFL's 65 nm chips?
are you refering to the power consumption? |
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iam pretty sure, if you would raise the voltage to 1,35v (which should not really be a problem at 110nm) and keep it cool on water 450mhz must be reachable |
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Wait wait wait wait, you got 5B1s that printed 32btc a DAY = up to $7000 a DAY, and you're calling them lying scum?
They gave you this money for free, you should be thanking them.
thats totally nonsens. He ordered and paid something he didnt recieve. |
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am i the only person who thinks that this is utterly funny? http://imgur.com/tWY1K6r"come to the dark side, we have minirigs!" hahaha |
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I think you miss a LOT space with this design. If you would use a rack adapter you would build in way more miners. At the moment you maybe use 200mm, but colocation racks have space for 750mm depth. Much unused space.
The other thing is... why do you use 3U for PSU? ATX-PSU's are designed especially for 2HU Height. So one would pay for 1HU extra.
in this demo setup you could also mount the PSU Unit and a BitBurner Unit in the front and two BitBurner Units in the back, half the height, same the fun but what i dont get: why are the plugs for the hoses in front of the Panel, that just makes no sense. Leave the Plugs inside, so you could connect the heatsinks from the units in the front easy with those in the back, if it stays like that it will be a pain in the ass to connect all those hoses. next point: if you really are going for a datacenter you really should think about power supply redundancy. you could also use one of those sweet 19" redundant 2kw psus like http://business.fantec.eu/html/en/2/artId/__1128/gid/__2009020590/article.html |
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I forgot... i asked hetzner what they think about watercooling and it looks they dont deny it from the start because the support asked me: "Is the compressor built into the 19" rack or extern?" and "how high is the probability of water leaks?"
Im not sure what the answers to this are. I guess radiator has to be outside, compressor can be inside right? But its interesting that they dont deny from the start. I wonder if its only hetzner or other datacentres too.
the reason they denied it to me was sth like "security blabla other custormers servers in the racks blabla". if i am honest, i would not like it if someone would put his watercooled selfmade hellmachines above my production servers in a datacentre. |
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funny thing, im in this hardware/overclocking/modding business since approx. 2001 and the best fans ive ever had were the Yate Loon D12SL - 120mm, 1350 U/min 28 dB/A 28 m³/h. The D12SH (last letter h for high, l for low, m for medium) were pretty good too (2200 U/min 40 dB/A 149,51 m³/h) both must be around 5€ per Fan. If i would put my miner into a datacentre i would recommend high performance fans, with as much airflow as possible. You could also put some Delta Fans into it. (FFB1212EHE 120x120x38mm, Doppelkugellager, 4000rpm, 322m³/h, 59dB(A)) but i doubt, that the fan port on the bitburne is ready for a fan that draws itself 24w of power But i think burnin should say something about the production heatsink, since the choice of the best fan mostly depens on the surface/material of the heatsink ... |
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Nice explaination.
I think before burnin didnt test the advantages of watercooling its all speculation. Only when there is a reasonable advantage it would make sense to go that route. So i hope he will test it.
And i wait for an answer from hetzner if they would allow watercooling in their datacentres anyway.
been there, done that. in 2011 they did not allow it ... i think that especially in germany its not very clever to host miners in datacenters due the high costs for electricity. Yes, thats why i look for other countries with lower electricity. But the main reason is... i cant really host it at home. It will reach limits of home electricity, it will maybe be strange too to have such high electricitiy bills (in usa you could get a raid because they think you raise hash), its unsecure at home (miners were stolen already) and the price for electricity is high too. So datacentres look like the only solution to me. If its true that watercooling isnt allowed then watercooling isnt a solution for me. The only thing i would try then would be to form a real tight airtunnel for my miners. From fan through heatsinks. This way i hope to optimize the heat dissipation through air. But i still search an appropriate material for forming the tunnel and fasten it. It shouldnt cause shortcuts and should be flexible and static enough. if you wanna have watercooled systems in germany try it and give them a call http://www.skyway-datacenter.de/deutsch/produkte/colocation/colocation.html |
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