Ich kann dir von 3 verschiedenen Karten berichten:

- Powercolor RX 570 Red Devil - Elpida Memory
- Gigabyte RX 570 Aorus - Hynix Memory
- MSI RX 570 Gaming - Elpida Memory

Von den Hashrates sind allesamt ziemlich gleich auf ~27-29mh.

Der Kühler der MSI ist den anderen Karten aber überlegen.

Wovon ich die Finger lassen würde ist auf jeden Fall die MSI Armor. Der Kühler der MSI Armor ist schrecklich und kühlt den Speicher nicht mit.

Nimiq (NET) is mineable with CPU.
Mainnet is supposed to launch in Q1 2018. You can already try out the Testnet.

Define 'slight movement'. 1%? 2%?
Trading manually? I don't think it is worth it. To many HFT bots out there that will outdo you.

Swing trading on the other hand is quite profitable if you have the experience.

But in the end it all comes down to risk reward.

It's only a loss if you sell at a lower price than you bought. If you don't sell and the price bounces back it is obviously no loss.

1. Never chase green candles or buy ATH. Instead try to buy the dip
2. Don't panic sell when there is a small retracement.