There isn't a single "standard" for residential circuits in the U.S. but there might be a typical circuit, such as 20 amps.
As far as plug connections, don't use light-duty extension cords; make sure they are rated for high amperage, say 20amps. Generally if you are plugging directly into an outlet then the total power drawn can be done safely up to 80% (...
They do indeed perform exactly the same
Crossfire is not encouraged as it gives no advantage and may impact your overall performance. The computation is done in parallel on each card so there is no need for them to communicate among each other.
The JSON-RPC interface is a way for other programs to interact with Bitcoin-Qt or bitcoind while it's running. It's useful for doing things like mining or building a web site that needs to talk to the Bitcoin network directly. Most users don't need to worry about it or set it up.
This is a question of efficiency regarding MH/s. Simply, I would like to know which is better
It doesn't matter. Every hash has an equal probability of finding a block. However, that being said, there's some hidden teeth:
Putting graphics cards together will make them harder to cool.
Putting them in multiple computers will use more electricity - all ...
You need a PCI Express (PCI-e) x1 to x16 Riser adaptor cable like this one:
Bear in mind that some graphics cards draw a lot of power, and I've seen photos of cables that have overheated because they couldn't handle the load. The linked one above may have solved this issue by ...
With the advent of ASICs, Bitcoin GPU mining is no longer profitable. I would recommend mining a Scrypt coin such as Dogecoin or Litecoin. (You can then trade it in for Bitcoin on an exchange, if you prefer.)
To answer your original question, yes, you can use one card for mining and the other for actually running the computer.
You can actually pick up a PCI to PCI-E 1x (open end) adapter and plug in any video card you want. Then use a PCI-E 1x to 16x adapter. This is an example, but there are cheaper ones out there.
to determine if they're being detected properly, use the 'lsusb' command.
Here's what they should look like if your system is detecting them properly (I run mine in a VM running Ubuntu:
$ sudo lsusb
[sudo] password for majorminer:
Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
Mining on a GPU, especially on less powerful ones like the ones found in laptops is highly inefficient. You can find out exactly how much you can potentially earn or lose from various Bitcoin calculators, like mine for example.
If you are worried about overheating your laptop and just want to test what mining is all about, you could also lower your hashrate,...
First the bad news: your Motherboard appears not to have a PCI-E Slot, which is required to fit any modern GPU. On the other hand for the price of a single GPU you can order more than 1 ASIC miner with lower power consumption, i.e., cheaper to run, and more computational power.
I'd wait until the first ones actually ship, though.
ASICs might make a data furnace idea easier since they take up much less space to generate high hash rates per watt. The Block Erupter USB project puts an ASIC in a powered USB stick package. Imagine a series of these ASICs coupled to a standard home baseboard radiator heat sink and controlled by a low power Rasberry Pi computer with Wifi to the net.
It largely depends on what machine you want to power with those solar panels. You're definitely going nowhere with GPU based mining. As PCs consume a huge lot of energy, and those who don't, are equipped with Atom and Intel graphics, meaning mining won't get you far with that equipment.
However, it may be possible to run a USB ASIC miner based on a ...
The specifications of the computer between the internet and the miners has to be fast enough to handle all the communication between both, but other than that, any extra capacity will remain unused by this host computer. A Pentium 4 might be enough if you run a Linux OS, but if you plan on using Windows 7 or higher, it will not be fast enough. Using a ...
Currently, all mining software have GPU and CPU mining disabled by default. You're going to need to recompile from source and enable CPU/GPU mining to be able to mine with your CPU/GPU. You should be warned that this is not profitable in any way, shape, or form and that even on testnet, your CPU won't likely find a block for many hours.
That said, if you're ...
Reading this in 2017 with a chuckle. The Pi is pretty much the defacto controller due to its low cost and energy use. I have one running an ASIC over USB with cgminer, compiled on the Pi.
Some of Bitmain's Antminers use Beaglebone Blacks (TI?), I'm not sure why. I'm in a Debian ARM mailing list and there are more little ARM machines than I can count. ...
You need whats called a Power Filter.
There are varying levels of filters, some cut the tops off of AC signals, others take dirty input current and consume it, then create a completely new AC signal for device use.
The C2 is a good intro, but if you want superior protection, look for something called a Power Conditioner.
Here are links to the current ...
As a general rule of thumb, a domestic circuit has a lower or zero 'standing charge' but much higher charge per unit than a 'light industrial' one.
A friend of mine was a keen pottery enthusiast and owned a small business make and selling pots at craft fairs. He had the electrical company install a second meter and circuit (in his house) to run his ...
What other safety precautions should I take?
Surge protection and proper grounding
Insurance (either house, rental, or business should cover mining equipment)
Plan for floods, earthquakes, tornadoes, etc. if applicable
This would be approximately true, if:
Your regular heating system is a resistive electrical heater. (Not gas or oil, not a heat pump.)
Your mining rig produces no more heat than is needed to heat your house at any given time. (This may be false for people with lots of hardware, or living in warm climates. Note also that your heating needs may be much ...
A single instance of cgminer handles multiple GPUs, so there is no need to run separate processes. Enabling SLI(You aren't using NVIDIA cards, right...) or Crossfire will decrease mining performance, so leave it off.
There is no overhead associated with running multiple GPUs on a single system, unless the cards are physically spaced so close together that ...
You need to use cgminer-3.7.2 or earlier. For some reason, GPU mining was removed from subsequent versions.
Cgminer is the best available miner for your purposes. Con Kolivas is one of the world's great programmers, and we are lucky to be able to use his software.
Please also be sure to read the file SCRYPT-README to get reasonable performance.
Nope, you're good to go. You don't even have to connect them all through PCI-e. With cgminer, you can set the settings uniquely for each card. You can use any kind of adapter that would normally bottleneck GPU performance.
I have found that the cheapest way to hold many cards is to put them in old motherboards. I have been buying motherboards off Ebay for $45, getting a $5 processor, a $100 PSU and connecting 4 cards per rig. I currently have 6 of these rigs running and they are great. As for heating I have built custom cases for my cards so they don't overheat. Using this ...
The hardware of the controller doesn't matter. You can run cgminer on a Raspberry Pi or a TP-Link router, both are terribly weak and it has absolutely no effect on the ASIC whatsoever. To this end, even KNC mining rigs use Beaglebone Black boards to control their top of the range miners. Most home miners use Raspberry Pi due to their low cost and easy to run ...
Theoretically you should see a net saving in electricity consumption for there ought to be some economies of scale in having a single motherboard with the 4 cards vs. 2 separate motherbs. each with 2 cards each.
The CPUs controlling such cards are consuming power themselves but such consumption doesn't get much bigger if you have 1, 2 or 4 cards in the same ...
With solo mining, all you need to get from the Internet is the latest block. Since these come once every 2.5 minutes (average) and are at most 250 KB (typically ~10 KB), you should be just fine. You'd also want to get all the latest Litecoin network traffic in order to validate all the transactions you can, but that'd be pretty small, like the blocks.