You're assuming current profitability is going to last a year, which isn't realistic at all. Elon Musk screwed us. Yesterday I was making 22euro per day (24 hours) with one 3070 and a 3060 mobile, today its already gone down to 12euro. Profitability was at an all time high, it's going to return to normal values or lower.
I'm getting $10 a day on nicehash with a 1660s, paid in btc, In 2 months btc will be 100k, so will be about $1200 - electric in 2 months ti.e
At one point I'd agree but not so sure now amd are certainly getting more aggressive in the market and so are the Chinese obviously there behind the leaders but growing fast,think the 2 horses race days are about to be done,Intel will always be a player if they can keep in the race but as we've seen time and again it doesn't take much of a stumble for a tech firm to fall flat out the race! If it were just them and amd I'd say sure but the future a little more hazy these days
aim for £350.00 if just usung the Apu for graphics
9-12 months maybe, outlay, electricity etc