Some MSI motherboards have 7 PCIE slots, like G41, G45, GD55 or GD65. I bought the MSI Z77A GD55 for $160 two years ago. I sold it for $180 a few weeks ago. They are in demand.
Great! I have a look into them and check which one would be suitable to start mining according to my budget. About the ideal power supply for the GPUs, how do I know how many watts PSU do I need for lets say 6 or 7 GPUs? I just want to know since I don't want to waste money on a bigger watt power supply, when I could have bought one that meets the wattage requirements for the GPUs.
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Need context to qualify a response, as in: what card(s) you'll be building your rig out on.
I would be using AMD cards for my mining rig to mine Ether. I think that with 6 AMD Radeon R9 GPU cards, I will mine a lot of Ether but that would depend on current mining difficulty. For starting, I will just buy 3 GPUs and see how well it goes for me. Then I would buy more as needed.
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7970 cars are the best to mine. It is cheaper than 280x and has the same structure. You can have ROI if the Ethereum price is kept at 0.005 btc.
I hope ETH price remains stable so that I could ROI fast. Thanks for recommending me this type of GPU to mine. It is indeed cheaper than 280x ones and if it performs the task well, then it would definitely be a keeper for my future mining rigs.
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The problem with Ethereum mining is that it will last no more than 10 months. It will become PoS after some time.
I have heard about Ethereum becoming PoS but didn't thought it was going to be in the next 10 months. I guess that I haven't read much about Ethereum's phases yet. One thing I know for sure is that Homestead release is very near. I'd better start building my GPU rig to begin with ETH mining. Later, I will buy some ETH mining hashrate from Genesis Mining and see if I could get ROI as well.
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https://blog.ethereum.org/2015/08/04/ethereum-protocol-update-1/Posted by Stephan Tual on
August 4th, 2015.
Difficulty adjustment scheme
A lot of you have been wondering how we would implement a switch from PoW to PoS in time for Serenity. This will be handled by the newly introduced difficulty adjustment scheme, which elegantly guarantees a hard-fork point in the next 16 months.
It works as follow: starting from block 200,000 (very roughly 17 days from now), the difficulty will undergo an exponential increase which will only become noticeable in about a year. At that point (just around the release of the Serenity milestone), we’ll see a significant increase in difficulty which will start pushing the block resolution time upwards.
So,
a year on, the network will continue to be useful for roughly 3-4 months, but eventually will reach an ‘Ice Age’ of sorts: the difficulty will simply be too high for anyone to find a block. This will allow us to introduce PoS, perhaps via Casper, if it proves itself.