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1  Bitcoin / Mining / Turning off miners on: January 13, 2015, 06:02:22 AM
The difficulty increase combined with the price drop has me turning off another batch of miners. How about you?
2  Bitcoin / Hardware / S5 review on: December 30, 2014, 03:42:00 AM
Bitmain also offered me an S5, no strings attached. So here is my initial review.

Setup was easy. Plug it in and turn it on. DHCP grabs an IP address. My router identified it as "antMiner". Hit the IP with the browser and configure the web interface for pool credentials. Username and password to get into the web interface were root and root.

This new S5 is not quiet. The 120mm, 4200 rpm fan is loud. But sitting in a 40c room, the ASIC temps are reporting 62c, so it's looking nice and cool.

After running for an hour, it settled into:

Miner Speed: 1155 GH/s
BTCGuild Speed: 1145 GH/s
Power: 675 W (750 W Bronze PSU)

Power consumption is a little high due to the cheap Bronze PSU. Switching to my Platinum PSU should reach the advertised 590 W.

Initial opinion: Good efficiency, easy setup, meets advertised specs.

After some further testing I'll offer a comparison with the SP20.
3  Bitcoin / Hardware / [Review 10] Spondoolies SP20 - Tortured on: December 18, 2014, 01:53:51 AM
I received my review unit from Spondoolies on Monday. As noted elsewhere, the unit was packed nicely. I appreciated the all-cardboard packaging which is fully recycled where I live.

Since I'm cold blooded, I like my place warm. Really warm. My old BitFury miners also love the heat. Let's see how the SP20 fares.

My Antec HCP-1300 Platinum 1300W PSU was ready and waiting. Most PSUs have a color coded mb connector wires, but this one has all black wires. I grabbed what I thought were the right two pins and plugged in my paperclip. Lights come on and the SP20 connects to the network. Must be the right two pins, right? I surf to and see my machine up and running. I click on it and go to the Pools page and input my pool credentials. But the miner just won't mine. It's only using 4 watts and the supposedly loud fan isn't spinning. It finally occurs to me that the paperclip might be in the wrong pins. I switch to the right pins and this time the fan lets me know I found the right pins.

My BitFury miners are quite tweakable, but it's very difficult to do so (adding/removing cards, editing config files). But their modularity and tweakability allows me to maximize my hashrate per electrical circuit. While not modular, the SP20 allows very easy tweaking of voltage and power. Here are the results. All tests at 100% fan and 40c intake temperature.

VoltageWattage at wallGH/s

Since my PSU is more than sufficient, the limiting factor in performance is the temps. The SP20's single exhaust fan just doesn't move enough air when in a hot room. Half the chips get hot air from the other half, like the old dual GPU 5970, so they get clocked down significantly. I wish there was also an intake fan on the other end for a nice push-pull configuration. This would also lower fan noise, although noise is not a concern for me. A half-size SP20 where the airflow goes over a single set of chips would also work well.

The SP20 excels in quality construction and ease of setup. Provide a good PSU and turn it on. It'll adjust itself for maximum performance, even in a hot room.  Later when efficiency becomes more important, lowering the voltage will come in very handy. Recent price drops by Spondoolies make the SP20 one of the best buys in the market.
4  Bitcoin / Bitcoin Wallet for Android / KnC Wallet on: February 24, 2014, 04:48:26 AM
KnC Wallet appears to be an illegal fork. Not only is the source not available, but the terms of service include many terms that violate the GPL license.
5  Bitcoin / Mining / Miners: Don't deprioritise/filter address reuse! on: November 24, 2013, 06:03:28 AM
Since Luke-jr doesn't want to have an actual debate in his thread, I've started a new non-censored thread so a real debate can happen.

Bitcoin is never anonymous, no matter how you use it.

Show me their personal identity. If you cannot provide their personal identity, they are anonymous.

Bitcoin doesn't need slower transaction confirmations. Bitcoin clients need to make unique address use easier.
6  Other / Off-topic / OT from Want a BFL PayPal refund? PM me. on: September 12, 2013, 12:43:49 AM
I think you're jealous PG and I drank the Kool Aid and lived to tell about it.

Did you get to see the infamous FCC test report of the Jalapeno from last November?
7  Economy / Service Discussion / Arbitrage test on: September 05, 2013, 02:28:56 AM
I had some USD on CampBX and some BTC on MtGox, so I thought I'd do my part at lowering the spread between CampBX and MtGox.

Bought 8.6 btc @ $116.00 on CampBX for $1003
Sold 8.6 btc @ $128.49 on MtGox for $1098
Profit: $96

Although now my USD is stuck in the black hole that is MtGox, but hey, I did my part!
8  Economy / Scam Accusations / BFL continues to lie about shipping times on: April 30, 2013, 08:06:32 PM

Pre-order Terms: Bitforce SC (ASIC) products are shipped according to placement in the order queue, and delivery may take 2 months or more after order. All sales are final.

There is zero chance of any order placed today shipping in 2 months. In fact, I am so sure of that, that I'm prepared to make a double-or-nothing bet with BFL right now.

As soon as Inaba accepts this bet, I will place an order for 10x 50 GH/s Singles.

* If they are shipped within 2 months of the date the order is placed, I will send BFL the same number of bitcoins that I sent to place the order.
* If they are not shipped within 2 months of the date the order is placed, BFL send me the same number of bitcoins that I sent to place the order.

Fine print: I will post the txid of the bitcoin transfer for payment of the order as soon as it is placed. "shipped" means the product is shipped by a regular shipping company (USPS, UPS, FedEx, OnTrac) and a valid tracking number for that package is emailed to me. When I receive the package and verify the contents as the actual product expected I will send the bitcoins to BFL. If BFL loses the bet, they will send me the bitcoins within 3 business days of the end of the 2 months. Losing the bet does not mean my order is cancelled. I still expect to receive the product as originally ordered, win or lose.

If Inaba will not accept this bet, I demand that Inaba and all the other BFL accounts be tagged with "scammer" tags.
9  Alternate cryptocurrencies / Altcoin Discussion / Terracoin orphans on: April 16, 2013, 07:38:41 PM
I'm watching a ton of orphans (100's) coming in on my Terracoin server. Is there a block explorer website that will show what's going on?
10  Other / Off-topic / Inaba's request on: October 22, 2012, 08:31:27 AM
As a side note, can you point out where I have manipulated the truth?

I'd be more than happy to answer your question, just not in Tom's thread.

No, but BFL as an entity is limiting it's contact with Bitcointalk.  I'm speaking merely as myself and as a pool operator.  On the rare occasions BFL intends to interact with this community, I will post as BFL_Josh. 

You interact on behalf of BFL every day while posting as "Inaba". Take for instance the following lie:

Email and we will happily refund your order at any time.

"We" obvously means you are speaking for BFL. Since the website clearly states "Payments made for pre-orders of ASIC based products now under development should be considered non-refundable", "at any time" is false because you can refuse to refund an order for any reason you like.

Now this one's a whopper:

But heck, I'm a generous guy, lets cut that in half just for giggles!  405w for 54 GH/s.  Welcome back GPU's!

405 w @ 54 GH/s = GPUs? You're off by 2 orders of magnitude!

I did not decline the bet.

Is the bet on? Nope? You declined the bet.

Power usage is *everything* when it comes to ASIC.

No, actually, when you start mining and how much you pay for hardware are crucial elements in profitability.

I know, for my part, I would not want a device that runs at 200w at 60 GH/s - it would never see a positive ROI.  Even at 150w, your ROI would be measured in years, not months.

Since you don't know what the exchange rate will be, or what the difficulty will be, you cannot state it would never see positive ROI. Neither can you state at 150w it would take years.

Let me just end with one more:

I'm not trolling, I'm a customer asking a legitimate question.

That's just the last few pages of your posts.
11  Alternate cryptocurrencies / Altcoin Discussion / Now that LTC is safe... on: July 29, 2012, 09:33:00 AM

RealSolid begging for Bitcoins so that he can continue working on MC. Cheesy
12  Other / Meta / Ban SolidCoin on: January 29, 2012, 05:43:57 AM
I'm sick of this trash. Can we delete all SolidCoin-related topics? The recently released SolidCoin source code continues to violate the original software license of the code stolen from the Bitcoin project. This forum is no place for illegal activities. Especially when the license is so easy to comply with.

Let me quote it:
Copyright (c) 2009-2011 Bitcoin Developers

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
Version 2.04 has been released, and again CoinHunter has failed to include the required notices. This license requirement has been brought to CoinHunter's attention many times, and yet he refuses to comply with the license. Ban him and all SolidCoin threads until he complies with the license.
13  Alternate cryptocurrencies / Altcoin Discussion / Stolen Bitcoin code on: November 02, 2011, 06:56:37 PM
Bitcoin source code was released with a license clause "The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.". Even though SolidCoin uses a substantial portion of the Bitcoin software, "RealSolid" has replaced all the copyright notices with his own. Shouldn't the original Bitcoin copyright notices be kept intact?
14  Alternate cryptocurrencies / Altcoin Discussion / Why I Mine Alternates on: August 30, 2011, 11:01:15 PM
Hi everyone, I'm a cryptoholic. Bitcoins are my cryptocurrency of choice. But sometimes I dabble in other blockchains. Why? Because I can mine them faster with their lower difficulty, and then convert them to my favorite Bitcoins and in the end get more Bitcoins than if I had simply mined Bitcoins. Do I care for those other chains? Not really. I'm just using them to get more Bitcoins. How about you?
15  Economy / Marketplace / [gone] Dirt 2 Activation Code on: August 28, 2011, 09:17:22 PM
Received in a video card a while back and never used. First one to use it gets it.

Steam Activation Code:

Donation appreciated:
16  Bitcoin / Mining support / Easy Ubuntu python OpenCL mining setup on: January 06, 2011, 06:32:08 AM
Here's the quick instructions I use when setting up a new box. Nothing fancy, but it works. From a bare box to a mining machine.

1. Install Ubuntu 10.10.
2. Install the proprietary video driver. The regular Nvidia driver in the repo works fine. I have not tested the ATI driver.
3. Install the python stuff. Paste the following commands in a Terminal:
sudo apt-get install python-pyopencl subversion
tar xvf bitcoin-0.3.19-linux.tar.gz
svn checkout
cd python-jsonrpc/
sudo python install
cd ..
mkdir .bitcoin
echo "rpcuser=un" > .bitcoin/bitcoin.conf
echo "rpcpassword=pw" >> .bitcoin/bitcoin.conf
wget --no-check-certificate
wget --no-check-certificate
wget --no-check-certificate
~/bitcoin-0.3.19/bin/64/bitcoin -server&
python -d 0 --user un --pass pw

Change the username and password if you are worried about someone connecting to your box.
17  Bitcoin / Bitcoin Discussion / Do you feel lucky? on: August 01, 2010, 11:06:55 PM
I feel very unlucky. My system has been cranking out 2600 khash/sec for more than 16 days so far, and still not a single block generated. I am not going to buy a lottery ticket any time soon.

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