Bitcoin Forum
May 14, 2024, 04:42:00 PM *
News: Latest Bitcoin Core release: 27.0 [Torrent]
 
  Home Help Search Login Register More  
  Show Posts
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 [37] 38 39 40 41 42 43 44 45 46 47 »
721  Economy / Computer hardware / [WTB] PDUs on: February 20, 2015, 08:24:58 AM
Looking for PDUs that have L6-30 or 20 inputs. Prefer USA based.

Please post models, quantity and amount you are wanting for them.
722  Bitcoin / Mining speculation / Re: Is it worth buying equipment for $5k or so? on: February 18, 2015, 07:24:21 PM
Your electricity is cheap enough you can make some money with used miners if you power is really USD $.0425/KWh.  Try to buy something with a decent efficiency and your good.  You could probably buy around 14 Antminer S3's with $1000 to try it out.  Should ROI in about 4 months, if you can handle the noise and the heat buy more miners till you trip your main breaker, then start replacing the older miners with newer ones to increase your hashrate with the same power.
723  Bitcoin / Mining speculation / Re: Mining is still profitable? on: February 18, 2015, 06:47:15 PM
Yes it is still profitable depending on equipment and power costs.  You may have to buy in bulk on both hardware and electricity to get an ROI around 180 days or less, but this is very doable to still make money.
724  Bitcoin / Bitcoin Technical Support / Re: Any way to improve Bitcoin Core when operating in hostile environments? on: February 17, 2015, 06:59:04 PM
You can use SSL VPNs through the GCF without being effected.  Ipsec and L2TP protocols are blocked.

SSL VPNs are blocked (apart from some expensive ones - you can probably understand how that works) and even ones using UDP don't work any better now.

You could also use an encrypted traffic through a GRE tunnel across the GCF.  I do not think GRE is blocked is blocked by it.

Tunnels work but are "slowed down" to the point of 9600 baud in general (as soon as the traffic goes outside of China). The GCF *detects* encryption and either "kills it" or "slows it down to a snail's pace" (I have one other way but I am not going to publish that).

The 3rd world war *is the internet* and I am seeing the "front line" (it will become more apparent to others in the next few years I think).


We operate Checkpoint and Citrix SSL VPNs out of HK as a tertiary DC for our world wide employees without issue.  While these are definitely bussiness class appliances I am sure there is a providor out there using similiar equipment you could SSL VPN too.
725  Bitcoin / Bitcoin Technical Support / Re: Any way to improve Bitcoin Core when operating in hostile environments? on: February 17, 2015, 06:51:37 PM
You can use SSL VPNs through the GCF without being effected.  Ipsec and L2TP protocols are blocked.

You could also use an encrypted traffic through a GRE tunnel across the GCF.  I do not think GRE is blocked is blocked by it.

726  Bitcoin / Bitcoin Discussion / Re: How Many Bitcoiners are Mentally Ill? on: February 13, 2015, 05:25:34 AM
I am worried about the drug use, but more drugs are bought with fiat then ever will with Bitcoin.  Traces of drugs are even on US dollars as well as most likely most fiat currencies.  So it seems to say fiat is used more for drugs then Bitcoin.

http://www.theguardian.com/world/2009/aug/17/cocaine-dollar-bills-currency-us
727  Bitcoin / Mining support / Re: Help Please! What would be the best way to power 15 Sp20's from home??? on: February 12, 2015, 08:48:10 PM
I live in Houston and currently have 27,000 Watts of miners at home and putting in more.

You can PM me if you have any questions.  It is very easy to convert 120v to 240v plugs, as long as its only outlets on the breaker you can just install a 2 pole breaker move the neutral to hot and change the plugs and you now have double the watts without re-running the wires.  Please stick to NEC code and if you do not know hire an electrician.

Last thing I want to see on the front page of the Houston Chronicle is "Bitcoin miner died by self Electrocution"  Wink

Good luck.
728  Bitcoin / Hardware / Re: Spondoolies SP35 - Heat + Noise on: February 12, 2015, 04:46:20 PM
Everyone is assuming a lot.

He might work for a Fortune 500 company.  He just maybe located in a small office with a small server room.  In which case I doubt they would notice an SP35 on their 200 sites of electric bills.

He might work in a small office that has power included in their lease so building is paying the bill.

He could have his own company wind farm powering the office.

I say if he has permission let him do it, if he has to unplug it I will buy it cheap  Grin LOL
729  Economy / Computer hardware / Re: 18 Terraminers IV for sale on: February 12, 2015, 02:36:40 AM
Thank you all for your interest and your feedback.
Ill have to make some calls and ill be back tomorrow with the lowest price ill be willing to take for the units.
If not met, ill just keep them, and keep an eye on ideas of repurposing them or something.
best,


If you can come down to a reasonable price, I will buy and pickup everything including the racks.

LMK
730  Economy / Computer hardware / Re: 18 Terraminers IV for sale on: February 11, 2015, 08:18:07 PM
He posted a price, 4.5 BTC and offered me no discount if I bought all of them so I am assuming the price is the same for bulk and singles.
731  Bitcoin / Legal / Re: MSB/Money Transmitter? on: February 11, 2015, 07:26:49 PM
From what I have seen on MSBs.  If you are only buying or only selling you are okay.  If you are buying and selling then yes you need an MSB.  I might be wrong but you do not want to wind up like BurtW so do your research.
732  Bitcoin / Hardware / Re: Spondoolies Tech SP35 Power and PDU Help on: February 11, 2015, 05:52:55 PM
Those PDU's won't work as your trying to put 73KW in one rack.

You will need a PDU with a IEC309 connector, those are good for 60A of 3PH and the PDU's can usually handle a little over 17KW.  You can get the extended rack enclosures that allow 2 of these per side so you would get 4 PDUs and 240A of rated power in the rack thats about as close as you will get, but if you stick to code you can only use 80% of the rated power 24/7.

Since you didn't ask for cooling advice I will just give you a side note.  Most Datacenters can not handle this amount of heat from one rack, you will be a glowing red violation when they do their thermal imaging check.
733  Bitcoin / Hardware / Re: Spondoolies SP35 - Heat + Noise on: February 11, 2015, 05:30:58 PM
3650W is 12,447 BTU of heat.  You will probably go over without cooling.
734  Economy / Computer hardware / Re: 18 Terraminers IV for sale on: February 10, 2015, 09:37:20 PM
Has: Brand new account
Has: Lot of high power high value miners
Lacks: Proof

Could you provide pictures? Do you accept escrow? Will the sale be done through you or through the datacenter (regarding any shipping charges)?

I agree with you except the high value. 

1.7Th@2100W is not or barely profitable so these no longer have high value.
735  Economy / Computer hardware / Re: 18 Terraminers IV for sale on: February 10, 2015, 08:08:26 PM
PM'd
736  Bitcoin / Development & Technical Discussion / Re: New method of 51% attack? on: February 10, 2015, 05:45:42 PM
I think at this point with so many multi PH farms.  It would take a huge investment to even try this, and no sane person would risk $10+ million on this to try and do something that may or may not work.  You would be taking about around 160PH or 160,000 Antminer C1's or 29,091 Spondoolies SP35's.  I want to be the salesman on that sale.

It would be a very impressive Data Center, I would love to see someone try actually.

Oh of course spending this amount to break a billion dollars + market that has been a pain the ass for governments since 2009 is very "insane".  Roll Eyes.

Bitcoin worth much much more but OTR transactions don't really move the price much because there weren't made on a "popular" exchange. Do you know that there are people with such reserves that can sell enormous amounts of bitcoins OTR while maliciously doing the above, Crash the market, Buy way cheaper, resell the mining equipments for a loss, PROFIT!

EDIT: Granted this is not feasible at these prices but consider at $1200!

I am not saying it is not possible.  I am saying the people with the funds to buy several 10's millions of USD worth of miners, build a few 100MW Datacenter to house it, and employing the staff to get it up and running has better things to spend their money. Even at half price the SP35's alone would be over $32 Million, after power and facilities and staffing your probably talking about a few $100 Million.

Be easier just to flood all the exchanges with $100 million worth of BTC and crash the prices, if a Billionaire got really pissed off at BTC for some reason.
737  Economy / Computer hardware / Re: 1mW Bitcoin/Scrypt Mine Liquidation! Everything must go! on: February 10, 2015, 05:24:49 PM
That wire looks like BX, BX does not need cable trays and you typically just find it laying on the ceilings as long as it has grounds and junction boxes every so often.
738  Economy / Computer hardware / Re: 1mW Bitcoin/Scrypt Mine Liquidation! Everything must go! on: February 10, 2015, 04:41:11 PM
Is the Transformer in a 3R enclosure?  Meaning is it an outdoor or indoor?
739  Bitcoin / Development & Technical Discussion / Re: New method of 51% attack? on: February 10, 2015, 03:02:39 PM
I think at this point with so many multi PH farms.  It would take a huge investment to even try this, and no sane person would risk $10+ million on this to try and do something that may or may not work.  You would be taking about around 160PH or 160,000 Antminer C1's or 29,091 Spondoolies SP35's.  I want to be the salesman on that sale.

It would be a very impressive Data Center, I would love to see someone try actually.
740  Economy / Service Discussion / Re: MyCoin Went Bankrupt? Were you a victim? on: February 10, 2015, 02:44:20 PM
Hire a lawyer, hope your government does a good job of finding all the companies assets and hope there is enough you will get some of your money back.
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 [37] 38 39 40 41 42 43 44 45 46 47 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!