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RE: EASIEST Guide to Mining Ethereum (ETH) - Windows - AMD/NVIDIA
I have a pair of 7790s laying around and a dual PCIe board also doing nothing. Am I going to be able to crossfire these, run two instances of eth, or should I separate them altogether?
I also have a pair of 5750s laying around too...and plenty of very efficient/low power 775 CPUs that I hope will happily support eth mining.
What are your thoughts?
GPU's are much more efficient than CPU at mining, but ensure that you calculate your profitability for your particular card based on its hashrate and your cost of power. The 7790 is a rather old card and only has 1GB of memory so hashrate may be low for the amount of power it consumes. If your power is free, then perhaps just throw whatever hardware you want at it and see what rates you can achieve. If its winter it can be a good way to warm the house :)
Also you do not need to run them in crossfire, they should be picked up individually by the mining software. Disabling crossfire can help reduce stability issues.