Power Supply for Two (x2) Antminer S9 / S7 / L3+ with Ready To Plug HarnessWith Bitcoin and other digital coins such as Ethereum and Litecoin skyrocketing in value over the past year, it is now profitable to start mining again.Building a mining rig is really like growing your own money tree.The rig will run and crank away and create wealth (in digital currency) while you sit back and reap the rewards.It takes a little tech savviness but anyone can learn how to build their own rigs.This post covers how to build a GPU mining rig that you can use to mine scrypt-based coins such as Ethereum and Litecoin.Bitcoin is different and is extremely hard to mine.You can’t mine Bitcoin profitably without having a large data center full of specialized Bitcoin miners.But it is profitable to mine Ethereum and Litecoin, sell them, and then buy Bitcoin with the earned income.A few years ago when you consider the value of the coins, the cost of hardware and the cost of electricity – mining simply wasn’t profitable.

But now with Ethereum hovering above $350 and Litecoin hovering around $30, payback time is a little bit under 4 months.And if the value of the coins increases, payback time can be as little as 2-3 months and after that everything mined will be profit.If you want to calculate your payback time or ROI, use this mining calculator.You can select a few digital currency and the calculator allows you to plug in things such as hashing power, power consumption, cost per KW/h.First and foremost, if you want to increase ROI and get the most bang for the buck, forget about computer case and fancy frames.You’ll want to build out your rig in a plastic storage or milk crate.The plastic crate is cheap and allows you to fit as many as 6 GPUs.The openness of the crate also allows maximum airflow to dissipate heat.Of course, things won’t look the greatest but when your mining for profit, you want to save as much money as you can.Getting a professional mining rig frame or case will tack on a few hundreds of dollars.But if you want something cool and professional looking, you can buy modular and stackable cases such as this one.Or buy a complete setup such as this Cyberpower PCs with Dual AMD Radeon 480s like this one.The standard power supply in a computer can be anywhere from 300W-500W.

But when your mining and you are powering up to 6/7 GPUs, you want to make sure you have enough power.1200W+ is what you’re looking for and you want to make sure that it is Gold or better certified for efficiency.Also, modular power supplies allow you to configure your cables individually which helps greatly when building out your rig.Due to the very high demand for power supplies, most of the 1200W+ ones are sold out.If you see them for sale, make sure you grab them quickly.Or another option is to use dual power supplies and use an adapter cable like this Thermaltake one.For mining, you want to maximize the number of GPUs your motherboard will support.Most motherboards inside computers can handle 1 or 2 GPUs, you want to use ones that support up to 6.These are usually hard to find in stores so getting them online will be your best bet.As for CPU, you just want something basic such as the Celerons.Mining does not tax the CPU; all of the work is done on the GPUs.When it comes to picking GPUs, you want the select the best bang for the buck.

You’re looking for something with high hash rate, low cost, and low power usage.You can start with as little as 1 GPU or as much as 6 GPUs within one rig.The hash rates listed below are for Ethereum.Different coins will result in different hash rates but overall you can see the performance you’ll get from each card.The hash rates listed below are for Ethereum.bitcoin casino comparisonDifferent coins will result in different hash rates but overall you can see the same type of performance you’ll get from each card.Due to the very high demand for GPUs, if you see them available make sure you grab them very quickly.Single 4GB DDR3 1600Mhz RAM is all you need.bitcoin atm manualNothing more and nothing fancy.In order to mount the GPUs within the crate, you’ll need riser PCI cables to extend the connection from the motherboard.bitcoin virus removal tool

Get as many PCI Express 1X to 16X Powered Riser Cables as you can to match up with the number of GPUs you have.There are many different variants, like this one or this or this.Get a basic 60GB SSD or 120GB SSD drive for installing the OS and running your mining software.You’ll need a basic Monitor and Mouse/Keyboard combo to configure all the software and mining settings.You’ll need at least one box fan per rig.If you’re into Linux, Eth OS is a free 64-bit Linux OS that mines Ethereum, Zcash, Monero, and other GPU-minable coins.bitcoin mining outletIf you’re a windows guy, here is Windows 10.This is a great guide on how to set up the software for mining Ethereum.bitcoin conf miamiFor Litecoin, take a look here detailing how to use cgminer.You’ll need a wallet to store your coins.nvidia bitcoin miner download

Get a hardware wallet like the Ledger Nano S.It is immune to malware and nearly impossible to hack.The screens also provide extra security by verifying and displaying important wallet details.The hardware wallet also supports a wide support of coins (Bitcoin, Ethereum, Litecoin, Dogecoin, Zcash, Dash, Stratis) and most importantly an attractive price tag.For more options, check out the wallet section.This is a great video I found on YouTube that demonstrates how to build a rig inside a milk crate.dogecoin bankGDAX Is Refunding All The Traders Who Lost On The Margin Flash Crash.bitcoin kaufen mit handyOut Of Coinbase's OWN Pockets!cnbc bitcoin quoteAre you serious about mining cryptocurrencies?If so, you need to know how to make the best use of your money and equipment.In this guide, we’ll show you how to mine your digital treasure in the most profitable way.

Obviously, the big money is going into costly bitcoin ASICs.If you are already in that position, you probably know how the process works and are intending to mine bitcoin.However, those of you on a more moderate budget are probably looking at building a GPU miner for scrypt currencies, or a buying a small ASIC machine for bitcoin or other SHA-256 currencies.In that case, you have come to the right place.The process of mining digital currencies involves solving complex cryptographic puzzles.By doing this, miners are providing ’proof of work’ that is rewarded with digital currency.Broadly speaking, there are two proof-of-work hashing algorithms in use today: SHA-256 and scrypt.Note that there are some lesser-used alternatives, which we will not be looking at in this guide (for example, Primecoin).Depending on your budget and the type of currency you intend to mine, there are two ways to go when setting up your mining system: Mining requires electricity – lots of electricity.If you are building a DIY rig, you’ll be getting an ATX power supply unit (PSU) anyway, so it’s worth investing in the most efficient supply you can get.

Consider the following two cases, for example: A PSU that is guaranteed to supply 860W and is 93% efficient would actually draw 925W (860W/0.93).By contrast, a 750W power supply that is only 80% efficient would actually draw 937.5 W (750/0.8) – thus using more power, but supplying less.When building a mining rig, you will need to take account of the power requirements of all the components you are using ­– especially all those graphics cards.Plus it’s a good idea to provide some excess capacity to deal with unexpected events and provide the potential to overclock your system.ASICs, on the other hand, can do far more calculations with far less power because they are highly specialised devices.And since they ship with an appropriate power adapter, you won’t have to worry about doing all the maths to find one that is up to the task.The mining efficiency of different systems can be compared by taking the ratio of the number of hashes it can perform in a second, divided by the power it consumes: Hashing speed / power consumption = mining efficiency After the initial expense of your rig, the essential thing you need to know to calculate your ongoing profitability is the cost of your electricity.

Check with your provider, or take a look at your last bill.If the power charges add up to more then you earn, it obviously isn’t a good business model.Rather than go it alone, it usually makes more sense to join a pool, where you combine resources with other miners.By joining a pool, you earn a share of the coins mined by all members of the pool and stand a greater chance of solving a block.Miners earn a share of the rewards if the difficulty level of the blocks they solve is greater than the level set by the pool operator.That level is always somewhere between 1 and the difficulty level of the currency.Inevitably, the difficulty level of all currencies increase with time – a fact that will reduce the chances of your equipment earning coins or mining shares.As a result, it is important to start with the best equipment you can afford, in order to mine profitably over the longest period of time.The volatility of the currency being mined also affects your long-term profitability.If the price suddenly drops, you will be faced with the choice of either selling at a low price or hanging onto your coins until their value increases.

In the former case, you would have to keep mining for longer to recoup your expenditure on equipment and electricity.Whichever way you mine, it’s a computationally intensive operation that creates lots of excess heat.Mining efficiency decreases as temperature increases, so make sure your rig has adequate ventilation and cooling.As mentioned above, this is why some mining rig builders  use beer crates rather than PC cases – to maximise airflow around their components.Even a standalone desktop fan can help to keep your kit cool.When building a DIY mining rig, it doesn't make sense to save money by buying a cheap PSU.Any instability in the power supply could hit performance, or even cause a system crash that will lead to downtime, so do invest in a high-quality unit.If your hardware isn’t mining, you are losing money.Here are some ways to minimise downtime: There are costs involved with mining, of course, like the rig and the ongoing electricity costs for starters.However, some extras are less obvious: For assistance with some of the calculations miners need to make, there are several websites that provide profitability calculators.

You can input parameters such as equipment cost, hash rate, power consumption, and the current bitcoin price, to see how long it will take to pay back your investment.As a test, we entered the specifications of two mining systems into the calculators below.For our Scrypt GPU mining rig, we used the system described, and for our SHAS-256 ASIC miner we used the specifications of a Butterfly Labs miner.With a UK electricity price set at £0.20 per KWh (which equated to $0.33), these are the recommendations and profits that the following sites presented: (Note that these figures were correct as of January 21st, 2014, and that they are all subject to currency volatility and shifts in difficulty level.)Dustcoin: SHA-256: Freicoin at $1.43 per day Scrypt: Dogecoin at $31.05 per day CoinWarz: SHA-256: Bitcoin at $1.14 per day Scrypt: Dogecoin at $39.13 per day Tradeblock: Bitcoin at $1.20 per day Bitcoinx: Bitcoin at $1.42 per day Hopefully, this gives you an idea of the spread of results across these services, given the same data at the same time.