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5121  Other / CPU/GPU Bitcoin mining hardware / Re: Wall socket question on: August 12, 2013, 06:46:49 AM
Once I knew the connector type for the Lepa PSU and the hot water heater socket type it was extremely easy to find cables to suit my needs and at a fair prices too! cant beat 6 feet and 12 guage for 10 bucks IMO:

http://www.sfcable.com/SF-1618-06B.html?utm_medium=shoppingengine&utm_source=googlebase&cvsfa=3023&cvsfe=2&cvsfhu=53462d313631382d303642&gclid=CK-cq_GH97gCFSho7AodrHwARA



Yeah that is what you need.

I had never seen a PSU which uses C19/C20 connector.  Looks like C13/C14 is only good for 10A and C19/C20 is good for 16A but otherwise they are the same.
5122  Bitcoin / Development & Technical Discussion / Re: dust removal idea on: August 12, 2013, 06:42:38 AM
People can make any tx they want however you can't force a miner to include that tx.

So it is both "solved" and not solved.  There is no central authority which could force a resolution.  If people want to make dust consolidation tx they can and if miners want to mine them they can.
5123  Other / Beginners & Help / Re: suitable motherboards for server rackmount with many gpus? on: August 12, 2013, 03:59:52 AM
None.

GPU mining is dead.  Even if it wasn't the only way to run 6 GPU (except watercooling which is too expensive) is to use extenders to spread them out and that will never fit in a rackmount case.   With even 3 GPU you will likely burn them up in confined rackmount chassis.

If you buy 48 GPU today I 100% guarantee you will lose money. 
5124  Bitcoin / Mining / Re: Intel on chip CPU SHA256 hashing announced on: August 12, 2013, 01:02:49 AM
thanks for your answers.
so with improving the efficiency/ speed of these operations new cpus are capable of doing more complex encryption processes in the background.
i try to reason what this could mean for the future development of encryption of communication/information especially with Prism/Tempora news in mind.

Not really.  SHA-256 isn't particuarly computationally intensive.  The average CPU is capable of tens of millions of hashes per second even without this instruction.  Far more than most users could ever hope to need.
5125  Bitcoin / Hardware / Re: Mining Equipment Manufacturers -- xCrowd*fixed*, HashFast, KnCMiner December on: August 11, 2013, 10:06:48 PM
Recalc ROI on 10% 15% 20% 25% 30%

8% won't be seen until maybe the end of 2014 with asic saturation.
We are going to be entering a heavy growth phase for the next 4 to 8 months, and it doesn't pay to be low on estimates.

Agreed.  Even 10% is a pipe dream.
5126  Other / CPU/GPU Bitcoin mining hardware / Re: Wall socket question on: August 11, 2013, 09:53:48 PM
Don't cut and splice cables.  If your PSU is a standard ATX PSU then it has a C14 receptacle and the plug on the PSU end us is a C13 (C13 plug in C14 receptacle).  The outlet pictured is a NEMA 6-20R so you need a NEMA 6-20P plug on the outlet end.  Put it together and you need a cable with a NEMA 6-20P on one end and a C13 on the other end.



http://rackmountpdu.com/Category/108-6-20p-to-c13-power-cables.aspx

NEMA 6-20P is 230V @ 20A max.  You can (assuming outlet and rest of house wire is up to code) safely pull 230V * 20A *0.80 derate = 3,680W.  

Note there are likely better/cheaper brands but that should get you started.  You want a NEMA 6-20P to C13 cable.  Of course this information is provided as is and assumes the house/outlet is wired properly and has been properly explained in thread.
5127  Economy / Service Discussion / Re: blockchain.info not resolving longer firstbits on: August 11, 2013, 09:22:18 PM
Please know that firstbits always was a seriously bad idea for security and a really poor way of identifying if the owner of an address is who you expect it to be.

That is true
Quote
Have you heard of hash collisions?

This is not.  There is no increased risk of collision.  
5128  Other / Beginners & Help / Re: ROI on Block Eruptors-A Newbie Analysis on: August 11, 2013, 08:42:08 PM
It has lately been more like 30% per 10 days.  So run your numbers again with 75% increase per month and another worst case scenario of +100% per month.

You aren't missing anything.  If difficulty rises as slow as you predict you will be profitable but if difficulty rises faster, much faster ....
5129  Bitcoin / Mining / Re: Intel on chip CPU SHA256 hashing announced on: August 11, 2013, 08:39:13 PM
i'm no expert on this but could cpu support for hashing also be used for the integration of encryption directly into operating systems/ software instead of mining?

i just had this strange idea of my cpus doing encryption of mails/chats etc. as a background process on-the-fly
or is this just a chimera and my thought approach is way off?  Tongue
 

Your CPU can do that right now.  These instructions just improve the speed/efficiency of various encryption algorithms.  They don't make possible something that was impossible before.
5130  Other / Politics & Society / Re: government opening my packages? on: August 11, 2013, 08:25:50 PM
It's bad packaging. There's no tape along the short sides, Amagi needs to start taping all sides. Apmex does this.

This.  You notice where box gapped opened there is no tape.  It isn't like there was tape and it ripped, or was cut clean.  There was no tape.  It is the original box, w/ original shipping label, and all the original tape and the shipper left two sides untaped. 

That is why the box is partially open.  You are lucky the contents didn't fall out because the shipper likely would show proof it was delivered and assume you were just lying to get free metal.
5131  Bitcoin / Mining speculation / Re: Network difficulty can't continue at 75% per month... on: August 11, 2013, 06:40:57 PM

There are multiple companies producing multiple petahashes right now. I see no problem with 1 Exahash by 2014.



At 1 Exahash even assumming free chips you would produce less in Bitcoins then the electricity was worth.  There is an upper bound based on the efficiency of units and the exchange rate.  For the same reason we never saw 1 PH/s using GPU we won't see 1 EH/s using ASICs unless the exchange rate goes up ... a lot.
5132  Bitcoin / Hardware / Re: Novec 7000 Project [immersive evaporating cooling] on: August 10, 2013, 08:20:44 PM
Hi OP, you could try to contact Allied Control (http://www.allied-control.com/index.php). I know they have built and run a 1T+ mining farm using over 6000+ spartan FPGA with immersion cooling. But they have dissolved the farm a few months ago because of the difficulty and the ASIC miner.

I have not contacted them but still closely at their designs and their results, They use Novec 649 in some of their projects.


Yeah that is another option for working fluid.  IIRC they used Novec 649 (boiling point of 50C).

I've been researching this product and is a different family of 7000, this is a acetone that can break down the coating of the wires, we are studying other solution is to use the Novec 7100 has a voiling point to 61º and mix it with the 7000 to reduce it, this tells 3M is possible.

One thing you may want to consider is Novec 1230.  It isn't designed to be a working fluid it is designed to fire supression however it has a high dielectric strength (designed to be sprayed into datacenters).   Getting a hold of it might be tough because it is only sold to OEM who do fire suppression installs.  However if you could acquire some my understanding is that is is only ~$40 per kg and thus substantially lower in cost then Novec 7100 and it has a boiling point of 49C.  If availability was a little better is may be a poor mans immersion cooling fluid.  I don't have a clue where you could acquire it as you likely would need to find a creative OEM.

http://solutions.3m.com/wps/portal/3M/en_US/3MNovec/Home/ProductCatalog/?PC_7_RJH9U5230OOA50IEKHCMDN11H0000000_nid=D7B0VRPJHSbeJ7332M26RCgl


5133  Bitcoin / Mining speculation / Re: Useless ASICs on: August 10, 2013, 08:13:17 PM
Anyone mining now should be basing their decisions on what they think bitcoin will be worth 3-5 years from now, not what it's worth currently.

That would only be true if your ONLY method of acquiring Bitcoins is mining which isn't the case.


For example say you can buy miner X today for 1 BTC (it doesn't matter if you pay in BTC, USD, or grams of gold the purchase price is 1 BTC equivalent) but you project it will only produce 0.90 BTC over its economic lifespan.  It doesn't matter what the future exchange rate is.  You can gain 1 BTC by simply buying 1 BTC instead. 
5134  Other / Beginners & Help / Re: Is it enough to just backup wallet.dat ? on: August 10, 2013, 06:20:26 PM
Yes.
5135  Bitcoin / Hardware / Re: Mining Equipment Manufacturers -- updates xCrowd and #HashFast on: August 10, 2013, 03:32:29 AM
Would you consider 25% and 30% difficulty growth columns?  If you need space you likely can drop the 8% column.  If difficulty only grows 8% every two weeks for the next year well nobody needs a chart to see how insanely profitable they are because they will be laughing all the way to the cold storage.  Then again it is never going to happen.
5136  Economy / Securities / Re: ASICMINER: Entering the Future of ASIC Mining by Inventing It on: August 09, 2013, 09:33:52 PM
how hard would it be to make hundreds asic cores like the GPU but only do hashing ?

What do you think current ASICs are?
5137  Bitcoin / Hardware / Re: ► ► ►HashFast Endorsement on: August 09, 2013, 09:27:16 PM
You just need a bunch of suckers to foot the bill for you.
http://www.winnipegfreepress.com/opinion/analysis/vancouver-water-cheap-unmetered-208927231.html
Quote
And it's all publicly owned and operated, despite a modest increase in annual water tax bills. Metro Vancouver estimates that the average household in its 22 municipalities now receiving treated water will pay a mere $148 this year for unmetered water.

Now that is pure awesome. 
5138  Economy / Securities / Re: SEC Charges Bitcoin Savings and Trust (BTCST) as Ponzi Scheme on: August 09, 2013, 08:09:51 PM
Erik Voorhees was wise to sell SDICE and pay back all the investors before the same thing happened to him.
FYI that would necessarily devoid him of any responsibility.  If I started a casino then sold it to jimmy that I still broke the law and profited from the crime and could still be prosecuted.

In theory but in reality no smoke less chance of a fire.

The chances of a prosecution go down (especially over time) if the operation is wrapped up and there is no complaint.  While yes if the staute of limitations is 7 years they could wait until 2021 and prosecute him them but that probably isn't going to happen.  This is the government we are talking about.  There is always some new dumbass to go after which is still in the news and seen as a "bigger deal".
5139  Bitcoin / Hardware / Re: HashFast launches sales of the Baby Jet on: August 09, 2013, 08:06:42 PM

Why do people make bets which close at the event.  Why would anyone bet now given that there will be a flood of bets seconds before the deadline when the outcome is no longer a gamble.
5140  Bitcoin / Hardware / Re: ► ► ►HashFast Endorsement on: August 09, 2013, 08:05:02 PM
i actually had a question.  will  the water cooling system come with the home models.  did i mistakenly see somewhere where it will only be for commercial rigs?

Unfortunately we can't offer any models for home use during initial sales. The reason is FCC certification. To sell a product for home use we need FCC class B certification, and this takes 1 or 2 months, after our chips become available. As a result we cannot endorse or sell any of our early products for home use. We may offer a product certified for home use later on, but our early products are sold for use in commercial environments.

The Baby Jet will come with the fully sealed, maintenance free liquid cooling system.

For those who want to read between the lines I will say what they are unwilling to.   AFAIK no BTC miner is designed for "residential use" as nobody has FCC certification, although plenty of people are operating them in their "residences".  That being said it isn't like the device has a GPS unit that will self destruct if you bring it inside a house.  It just means the company is selling it for commercial use, if you buy a commercial product then you are indicating you are buying it for commercial use.    What you actually do with it once you get it is up to you.
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