Monero RIGHT NOW is barely break-even with GPUs at LOW ELECTRIC COST.
It can't possibly handle an influx of even 10% of the Ethereum rigs currently mining ETH.
ETH will die eventually as a mineable coin - the long-announced but delayed move to POS is guarenteed to do so - but it should have a few months to a year of mining left, if your electric rate is low enough.
GTX series cards can also move over to FoldCoin after they become unprofitable on ETH - AMD cards traditionally don't do well on folding, unfortunately, though I've not seen how the new Polaris stuff does on that yet.
The Monero is a botnet CPU coin. It is more profit to mine by the botnet CPU. It is not profitable to mine with GPU.
I've been dabbling with mining XMR, it takes a long time to mine 1XMR with CPU, and the transfer cost is 0.1 which makes the mining not so profitable unless you generate a lot. I've also been mining BCN, but the supply of BCN is almost depleted. I'm wondering which coin is best to CPU mine next. I'm thinking about XDN maybe. I'm also mining XMG with CPU but that is more unique as the block reward reduces as total hash rate increases, so dont mine that one at full pelt.
Is anybody else CPU mining? Which coins are you mining?
Does your CPU have AES_NI. If it does, then it is more efficient than the GPU mining with 280X.
Looks like my processor does support AES-NI, I'm running a fairly new i7 with 8Mb cache. That's handy to know.
If it is I7, it will support AES_NI. So if you do not over clock and mine the Monero, you can have about 300H/s or even hgher.