If I had FREE electricity, I'd Mine bitcoin. Thats literally a no-brainer it borders on logic and not actually advice
Well, assuming you also had free BTC ASICs. Ensuring that your mining equipment pays for itself over its lifetime is an additional concern.
If I had free electricity, the only thing I'd change about my setup is that I'd consider finding an appropriate CPU coin for use with my existing rig.
What other alternatives are there to the Antminer L3 ?
And by the way, can a PC be bought and set up to do the job? What hardware should it have?
If you plan on going with a GPU rig, you'd better look at multipools that offer payouts in Litecoin, or mine Zcash/ETH/Other and manually exchange it for LTC. Mining LTC directly, as QuintLeo said, is not practical at this point.
Not too long ago (great timing -just in time for summer
), I reassembled my old LTC mining rig of low-mid range 7700 & 7800 series cards and have them mining Zcash. Power is relatively cheap where I live, but it's not super profitable. I don't personally want to buy new cards for mining (especially with the current mining craze), but since I have them on hand and they have already paid for themselves, I'm putting them back to work.
Coming from experience: ASICs pay for themselves much faster than GPU/CPU mining my man. I have 4 GPU rigs with 32+4GPUs and I can say with a straight face that they are no where near as profitable as my ASICs, even the S9 that I bought for 2.5k is more profitable than the 1080TIs I have dollar for dollar. BUT that is ofcourse me being honest over the internet. What you do is your decision. I personally hope everyone goes into GPU mining so that we don't have as much competition in the ASIC scene. GPU mining has become pretty much went from super profitable to totally unprofitable in the span of 5 months. Just look at the difficulties of any of the major GPU coins and compare that to 4 months ago.