It has now been 14 days since I started my Ethereum journey, and how far I've come.I started out with a single 4-way GPU system that I turned into two PCs with seven graphics cards between them, and then into four systems with 12 graphics cards, and then it all went a little blurry...I'm now sitting with 12 systems spread out across 40 graphics cards, thanks to the biggest asset of them all: PCIe x1 to PCIe x16 risers.Without these, I would be stuck at closer to 20-25 graphics cards.There's a mix of NVIDIA and AMD in there, with a bunch of NVIDIA GeForce GTX 1060s because of their great power efficiency - mixed in with GTX 1070s, GTX 1080s, and GTX 1080 Ti cards.Spread throughout their own, and intertwined systems are also the cryptocurrency beasts: Radeon R9 Fury series cards, and the impossible to find Radeon RX 400 and RX 500 series cards.There's a heap of RX 470/480/570/580 cards, but the R9 Nano, R9 Fury, and R9 Fury X cards are still Ethereum mining behemoths.They have special places in three different systems, with one dedicated to Fiji-based GPUs, while another two systems are dedicated to Radeon RX series graphics cards.

For the systems with 750W/850W PSUs, I've used the power efficient GTX 1060s thanks to their single 6-pin PCIe power connector.I started on June 6, and by June 7, you can see I was hitting 300MH/s without a problem.At that point, I wrote the "I'm making $900 per month mining Ethereum, I want MORE!"article, which has since blown up.This was when the bug started, and off I went on this adventure.After reaching 300MH/s, I was keen to double it within a few days and slowly venture up to the peak of 1GH/s of Ethereum mining.The price was rising every day, and so was the difficulty - timing was key.I had three more systems to use, so I filled them with the fastest hardware I had - but it was too much for my small three bedroom house and its weak power delivery.I reached just shy of 500MH/s within 24 hours of adding new systems but had to switch out the 1200W/1500W PSUs with smaller, more power efficient PSUs.Another 48 hours later and some PSU shuffling around, without additional hardware purchases, I hit another wall @ 600MH/s with the last system I had in parts assembled.Shopping InformationPRICING: You can find the product discussed for sale below.

The prices listed are valid at the time of writing, but can change at any time.Click the link below to see real-time pricing for the best deal: United States: The Ethereum mining @ 1GH/s: 40 x GPUs = $5000+ per month retails for $XXX at Amazon.United Kingdom: The Ethereum mining @ 1GH/s: 40 x GPUs = $5000+ per month retails for £XXX at Amazon UK.Canada: The Ethereum mining @ 1GH/s: 40 x GPUs = $5000+ per month retails for $549.00 CAD at Amazon Canada.This is the latest model of 6 GPU mining rig I am building this week.Equipment list – Links are to Newegg or Amazon or Parallel Mining product page Total Cost for Bill of Materials: ~$2250 I always forget something when I build the machine.Here’s some basic instructions for the most efficient order of operations.The idea is to get a basic computer built, troubleshoot any potential issues, install the operating system and application, then build the rest of the machine.If it doesn’t boot, this is the time to do basic troubleshooting.

Don’t add any more graphics cards until you get at least one working.If it does boot, set up the BIOS, connect an ethernet cable to the network that can get to the internet, and reboot.buy bitcoin for agoraTurn of unneeded services on the BIOS.raspberry pi bitcoin hash rateKeep all the PCI settings on Auto Set the graphics TOLUD to 3.5GB For details of setting up the hardware and software, look at this previous post: GPU Mining Zcash and Ethereum with EthosDistro and AMD RX470 on 6 GPU Rigethereum solarThe requested URL /list/index.php?brand=amd was not found on this server.bitcoin price wannacryWe’ve never done an article on GPU mining on Legit Reviews before, but continued interest in the ethereum project has caused Ether (the name of the cryptocurrency that runs on the ethereum blockchain app) to skyrocket in price by more than 2,800% this year alone.bitcoin five forces analysis

On Sunday, ethereum traded at an all-time high of $250.41, according to data from industry website CoinDesk.With increases and coin prices like that it has spiked the demand for discrete graphics cards in order to do GPU mining.gra bitcoinEthereum discourages the use of custom ASICs and FPGAs when it comes to mining, so this is something you could do if you wanted to on a PC with a powerful discrete graphics card.bitcoin szWhen you dive into the world of GPU mining you’ll quickly find that to make any serious money that you’ll need to invest in a fair bit of hardware.bitcoin informatieLet’s go trough the hardware that one would likely need if they wanted to build a 6  or 7 GPU ethereum mining machine.ethereum 2017 price prediction

Over at the Ethereum Community Forums you’ll find hundreds of threads about building a 6-7 GPU mining machine and you can make some pretty good money off a system like that.With 7 AMD Radeon RX 480 video cards that have been optimized for mining you should be able to get around 200 MH/s when mining ethereum, so if you plug that into a profit calculator you are looking at making a profit of $12,870 per year at the current difficulty and ETH price of $245.That’s guessing the rig uses around 1,000 Watts 24/7 and electric costs $0.1265 KW/h.(Please keep in mind the price of ethereum could always drop to zero or skyrocket, so think long and hard before you buy hardware to do this.)So, you want to building a mining PC?This is a quick summary of what you’ll need to get going.Motherboard:  You’ll need a little luck and possibly some magic or a custom UEFI to find a motherboard that supports six to seven video cards.The Intel Z87 and Z97 chipsets for LGA1150 processors offer a pretty good bang for the buck as they are being cleared out to make room for the newer Intel Z170 and Z270 motherboards for the LGA1151 processors.

Our favorite board right for GPU mining is the MSI Z170A GAMING PRO CARBON as it has the ability to run SEVEN GPU’s at a time when using the latest UEFI for $129.99 on Amazon.That board is starting to get hard to find, so grab one sooner rather than later!Processor: If you go with an LGA1150 motherboard the Intel Celeron G1840 Processor is often used as it a TDP of just 53 Watts and costs $55.99 shipped.If you opted for the newer Intel LGA1151 platform something like the Intel Celeron Processor G3930 at $42.11 shipped would not be a bad choice and has a TDP of 51 Watts.Since the CPU load is minimal (usually under 15% for pooled mining) you can get away with a low-cost processor and they both come with a heatsink fan (HSF) that you can use.We highly suggest turning off the Windows 10 search indexing service (simple guide) on your dedicated mining rigs as that eats up power for something that isn’t needed.With it enabled we noticed our CPU load was going up to 40-50% and the system was using significantly more power.

Power Supply: Your system is going to be running 24/7 and using close to 1000 Watts of power non-stop,  so you’ll want to drop some coin on a good model.We highly suggest an 80 PLUS Platinum rated power supply that is 1200W or greater.We’ve used the Enermax Platimax 1350W ($239.99 shipped) with good success.If you plan on undervolting the GPU and reducing the power consumption you should be able to get away with a 1,000 Watt power supply.The EVGA SuperNOVA 1000 is solid 80 PLUS platinum model for $213.72 shipped or you can go with a lower cost Corsair RM1000x that is 80 PLUS gold certified for $179.99 shipped.Depending on the model you get and the model of video card that you are running you might need to get some SATA to 8-pin PCIe power adapters.Memory: Depending on what motherboard you got you’ll need DDR3 or DDR4 memory.Chances are you’ll need DDR4 memory and we suggest using an 8GB of memory.Some people say you can get away with single channel memory, but we’ve always run dual-channel in our mining rigs.

A typical DDR4 2133 MHz 8GB (2x4GB) memory kit will run you about $59.99 from a big name brand.Storage Drive: Small and inexpensive is again the name of the game here.You likely don’t want to use a M.2 PCIe graphics card as some boards will disable PCIe slots when a M.2 PCIe SSD is inserted into the board.For that reason we suggest going with something like a low-cost SATA III SSD.The Kingston A400 120GB SATA III SSD at $47.99  or PNY CS1311 120GB SSD at $52.99 are hard to beat.If you don’t care about brand names or how easy it is to RMA if it breaks the DREVO X1 Series 60GB SSD at $39.99 shipped is cheap and will hold an OS.Riser Cards: Most go with USB powered 1x to 16x riser cards.These sell out often and they are mostly all made by companies that no one has heard of.The reviews on most are mixed, so you’ll just need to pick some and roll the dice.You’ll likely be paying around $8 each.Case: Get creative and make your own!Our favorite GPU mining builds are done using milk crates, some PVC pipes and zip ties.

The might not look fancy, but they cost under $15 to make.Mouse/Monitor/Keyboard: Whatever is cheap!The AmazonBasics wired keyboard and mouse is just $14.69 shipped.OS: Windows 10 works, but ethOS Mining OS is a 64-bit linux OS that was designed just for ethereum mining and runs $39.Electricity Power Usage Meter: We highly suggest picking up a Kill-A-Watt P3 P4400  power usage monitor to see how much power your system is using.This will allow you to calculate your bills and dial in your GPUs by lower the power usage to your liking.Power Cord: Are you building multiple systems or plan on putting them in a garage or basement?You might need a heavy-duty power extension cord to get to the power outlet.Video Cards: AMD Radeon RX 470/480 and Radeon RX 570/580 video cards are all the rage right now when it comes to ethereum mining, but they are extremely tough to find since they are all being bought to mine ether.Since we couldn’t find any Radeon RX 580 video cards to purchase at Amazon, Newegg, Micro Center or Best Buy we figured we’d try mining on some of the cards we had laying around to see how they perform.

Let’s take a look at the results on our system running Claymore’s Dual Ethereum GPU Miner v9.4 and Windows 10 v1703.Best Performance:  AMD Radeon R9 295X2 The AMD Radeon R9 295X2 came out in April 2014 and is over two years old, but this Dual-GPU card is able to be at the top of the performance chart with 57.6 MH/s of performance.We’ve seen these selling for as low as $500 on eBay, but the TDP on this card is an awe-inspiring 500W, so packing 7 of these into a single system would be more than what any one power supply could handle.The thought of a single system pulling  3,500+ Watts is pretty crazy!The AMD Radeon RX 480 and Radeon RX 580 are solid performing cards.When the AMD Radeon RX 480 first came out it the prices started at $199 and for that you get around 24 MH/s of performance ether mining in stock form, but you can easily get that up to 25-27 MH/s if you wanted to mod the BIOS and dial the cards in.You can reduce the power usage in AMD Wattman to get the power draw on these cards well below the 150W TDP rating.

The new AMD Radeon RX 580 uses more power and costs more than the Radeon RX 480, but it gets higher performance and many are able to get 29 MH/s per card at around 135 Watts of power when you do all the widely known power adjustments.No wonder the AMD Radeon RX 580/570 cards are all sold out.When we saw the NVIDIA GeForce GTX 1070 getting 27.4 MH/s in stock form we were impressed, but then the faster clocked NVIDIA GeForce GTX 1080 with more CUDA cores only got 20 MH/s.We talked to NVIDIA about this and they said it’s because the Ethereum base code fits the GDDR5 latency characteristics better than GDDR5X.So, when it comes to Ethereum mining a GeForce GTX 1070 is better to have than the GeForce GTX 1080.That said the NVIDIA GeForce GTX 1080 Ti uses GDDR5X memory and is getting 32 MH/s.The AMD Radeon R9 NANO gets an impressive 27 MH/s, but that’s all you can really get on that model as AMD doesn’t allow you to overclock the HBM memory and if you reduce the power usage at all the hashrate drops as well.

This 175W TDP card has good performance, but at $515 it will take a longer time to recoup your money.You can actually buy two Radeon RX 480/580 cards for this price and overclock them to get up to 27 MH/s and reduce the power usage/voltage to get about 40-50W lower power use per card.The AMD Radeon R9 390 gets an impressive 30 MH/s in stock form, but the cards 275W TDP makes is less desirable.The NVIDIA GeForce GTX 900 series cards don’t mine well on Windows 10 and use a fair bit of power, so if you have one of these cards you’ll want to run Windows 7 or EthOS where you can get higher performance levels with older driver builds.You’ll need to do your homework if you want to mine on a GTX 900 series card and generate revenue!We could have talked about mining for days, but it really depends on what hardware you get and how you configure all your software.The AMD Radeon RX 580 and Radeon RX 480 are the cards to get right now, but it’s tough to find them.You can build up a rig like this for $2,500 or less and make an extra $1,000 a month at the current rates.