1) you will not get anywhere near your goal.
2) It's a one off download for your wallet, after that it will only take a few minutes.
...My brother has a 560Ti, no clocks, no flags and is getting 87mhash/s, yours seems a bit slow (what does that flag do you have?)
K.
- so you think that no way to reach my goal should I leave the whole thing ?
-without flag i get 72 Mahsh/s, but that made my PC very slow