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1  Economy / Computer hardware / Re: [SOLD] Spondoolies SP30 hosted in USA ~4.4TH on: February 10, 2015, 01:19:52 AM
Completed a great transaction with QC.  Sent 3.8BTC to escrow and got a SP30.  It powered right up and he got 3.8BTC

many thanks
2  Economy / Computer hardware / Re: [WTS] Habanero miner 600+ GH/s $225 on: September 22, 2014, 04:31:22 PM
bump new super low price

Interested, would you take paypal? I'm a little low in BTC at the moment. I have high trust rating on ebay, verified address on paypal, etc.

Paypal can work.  Please PM to work out the details.

3  Economy / Computer hardware / Re: [WTS] Habanero miner 600+ GH/s $225 on: September 22, 2014, 02:44:39 AM
bump new super low price
4  Economy / Computer hardware / Re: [WTS] Habanero miner 600+ GH/s $285 on: September 21, 2014, 05:21:59 PM
how much extra for shipping to the Netherlands?

sorry for the late reply

The shipping price depend on the number of boards. 
One board shipped slow is $25 fast $35
Two boards                    $35        $45

thanks
5  Economy / Computer hardware / Re: [WTS] Habanero miner 600+ GH/s $305 on: September 05, 2014, 02:00:04 AM
I would like to buy some of these, but the cooler costs are just ridiculous and everyone sells them without them..

My experience is any modern liquid cooler fitted with a high CFM server fans will work fine.  The fans the come with the kits are 50-70 CFM and I am including two 250 CFM fans with each board. 

Newegg has an entry cooler http://www.newegg.com/Product/Product.aspx?Item=N82E16835181010
6  Economy / Computer hardware / Re: [WTS] Habanero miner 600+ GH/s $305 on: September 04, 2014, 10:16:04 PM
How many watts do these need?

My experience is just over 1W per 1 Gh.  I ran these off some 850W power supplies without any problem.
7  Economy / Computer hardware / [sold] Habanero miner 600+ GH/s $200 on: September 01, 2014, 06:47:02 PM
I have few Habanero miners to part with (need to make electrical room for new miners).  I need the power supplies and coolers for another project.  

Asking price is $200 US in BTC for each board, shipped in the US, international extra.  These boards have been happily hashing at 640+ GH/s since June.  
I also have some Delta 250 CFM server fans I'll throw in for free for each board purchased.

Escrow OK (at buyers expense).

Please PM with serious offers.

thanks
8  Bitcoin / Hardware / Re: My new garage and 200 amps on: August 08, 2014, 04:31:28 AM
Well nobody runs a 1200W PSU @ 1200W of load.  30A is good for 5760W (after 20% derate).   30A PDU are dirt cheap if you are willing to buy used.   Datacenters go through tens of thousands of these so there is never ending supply.



AP9571 is one example but there are plenty of other models which work equally well.  New ones are $150+ but used ones tend to go for $30 to $50 each.  A basic PDU is pretty much a high current power strip with a breaker.  It pretty much works or it doesn't so I have never had a problem buying used.

You will need to install* a 30A double pole breaker and NEMA L6-30R outlet for each one.  The AP9571 comes prewired with a matching NEMA L6-30P plug.  By the NEC, continual loads are derated 20% so you only get 24A usable from a 30A branch circuit.  One circuit (breaker, branch wiring, outlet, pdu) is good for 5.76KW (240V * 30A * 80%) which is probably more than most people can handle.  Remember electricity in = heat out.   So for those with dreams of building 100KW farms I would say start "small" you can build out in 5.76KW segments.  Even 5.76KW is a lot of heat.


* I can be done DIY, I put two in so I could power a 11KW GPU farm but this isn't a beginner project.  Remember electricity kills instantly and without warning.  Parts on the inside of the circuit breaker panel may remain energized with lethal voltage even if breakers are off.  It isn't a nuclear reactor but it does require some competence and good tools never hurt.

I know these datacenter PDUs are suppose to be feed 208V but if we feed them 240V will they still work and work without failure?
9  Bitcoin / Hardware / Re: ANTMINER S3 Discussion and Support Thread. on: July 24, 2014, 03:23:49 AM
Quick Question.

Any one else having their S3 report only one working blade.

I've tried
-different power supply
-multiple reboots
-different pci-e plugs
-Currently power all 4 pci-e plugs with a 1600 watt supply

I've filed a ticket with Bitmain but nothing yet.

Anyone have any suggestions short of opening the box and checking connections.



Bitmain will tell you to open up the case and reseat the plugs from control board to hashing board. 99% of the time that will fix your problem.

Opened the case up and reseated all connectors.  No visible damage.  One side is still cold to the touch.
10  Bitcoin / Hardware / Re: ANTMINER S3 Discussion and Support Thread. on: July 24, 2014, 02:53:03 AM
Quick Question.

Any one else having their S3 report only one working blade.

I've tried
-different power supply
-multiple reboots
-different pci-e plugs
-Currently power all 4 pci-e plugs with a 1600 watt supply

I've filed a ticket with Bitmain but nothing yet.

Anyone have any suggestions short of opening the box and checking connections.

11  Bitcoin / Hardware / Re: The Habanero Project - Third Party HF Mining Board on: May 30, 2014, 12:51:35 AM
Quick question for Mr. Teal.

I noticed the board has several 4 pin fan clusters.  How much power is available at each of these for fans.  I have a few 3.3A 12V server fans.  Can I power these off the board or should I just use  dedicated power from the supply?  Also how much power is available for the pins labeled pump, since I'm thinking of cutting my H100i SATA power cable and making it fit a 4 pin fan connector.

thanks
12  Bitcoin / Hardware / Re: The Habanero Project - Third Party HF Mining Board on: May 28, 2014, 02:03:11 AM
No idea but $30 to ship a single fan is absurd.

I agree.  Look for some old server fans on that big auction website.
I prefer Nidec fans, but pick the ones you like. 
For example a Nidec 4 wire, ta450DC 3.3A fan is capable of 220 CFM at full power (it does sound like a jet engine).  But any good PWM (4 wire) fan speed controller can balance sound and cooling.  These fans will give excellent pressure across any liquid cooling radiator, much better than stock.  You may need some longer mounting screws since these are typically 38mm thick. 

The best part is they are about $10 shipped and will run forever since they were designed for servers

Here is the spec on my favorite (its the 12V model)
http://www.nidecpg.com/fanpdfs/va450dcf.pdf

Search that auction site for 364517-001 (the HP model number)
Here is an example of two for $10
http://r.ebay.com/tzLipQ

Again this is just my .02, and YMMV.
13  Economy / Computer hardware / Re: [SOLD] Chili ASIC miners w/ coolers reasonable offers on: May 23, 2014, 08:53:57 PM
All sold...
14  Economy / Computer hardware / Re: [WTS] 5 Chili ASIC miners w/ coolers reasonable offers on: May 22, 2014, 04:17:42 AM
Sold 3 at what price?

Around $40 each depending on where in the world they are shipped and if coolers are included.  Cheaper with just boards since the package is much lighter and smaller. Each deal was customized.
15  Economy / Computer hardware / Re: [WTS] 8 Chili ASIC miners w/ coolers reasonable offers on: May 21, 2014, 11:17:56 PM
Three sold with 5 to go. 

International sales OK, boards only
16  Economy / Computer hardware / Re: [WTS] 8 Chili ASIC miners w/ coolers reasonable offers on: May 20, 2014, 03:34:01 PM
I pm'd you, I'll take one if we can escrow. Hit me back and we can cook somethin up

PM sent, let's work something out.
17  Bitcoin / Hardware / Re: The Chili 30+GH/s BFL based Bitcoin Miner Assembly on: May 20, 2014, 01:02:52 AM
All,
I have some happily hashing Chilis that need a new home,

Please see
https://bitcointalk.org/index.php?topic=616652.0

thanks
18  Economy / Computer hardware / [SOLD] Chili ASIC miners w/ coolers reasonable offers on: May 19, 2014, 10:23:07 PM
UPDATE -- all have sold.  Half here and half on that 'other' auction site.  As always the shopper here got much better deals than the at the 'other' site.

thanks again Mr Teal for making a great board.
-----------------------------------------

Looking to sell some BLF chip based Chili miners
Currently have 8 5 hashing away and cooling them is getting expensive as the outside air gets warmer

I am based in the US so I can include free US shipping (not AK, PR or HI).  International, we'll have to work something out.

Each includes a two antec kuhler shelf cpu coolers and one Chili Board.  $50 $40 shipped in BTC at the bitstamp price

If anyone wants just the board (no cooler) they can be had cheaper since they are smaller to ship.

photo


https://bitcointalk.org/index.php?topic=304250.msg3617346#msg3617346

thanks
19  Bitcoin / Legal / Re: IRS Releases Tax Rules on BTC on: March 25, 2014, 07:06:56 PM
It is good and bad...depends on each persons situation.

First are you a US taxpayer...

If yes, then it depends on whether you mine or buy/sell.

Buy/sell are easy.  If you by at one price and sell for another you have a gain/lose of the difference.

If you mine then Q8 of the release applies; then I read it as the IRS thinks we should realize the gain when "mined" based upon some exchange price.  This is nearly impossible, since each pool pays a tiny fraction of a bitcoin with each block solved.  Most pools don't keep exact enough records to know when each tiny fraction of a bitcoin was paid to each user.  I only know when I sent the accumlated tiny fraction to my personal wallet.

Does anyone see it differently?
20  Bitcoin / Hardware / Re: ANN: custom BFL firmware - tested 5-7GH pool meas. improvement on 60GH singles on: November 19, 2013, 03:38:35 AM
After playing with different values for each chip.  I can varied Hash increases and associated HW errors. 

What is a acceptable HW error?  I'm trying to quantify if my hashing increase is just being wasted as HW errors.

thanks
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