1. Is 50% GPU load going to slow down web browsing? If so, how about 30%? I know this can depend case to case but what is average estimate?
2. 1GH/s, pool mining? How long would it take you average to get 50BTC at current difficulty?
3. How much mhashs HD7670m gets?
4. What pool best suits someone with 1GH/s?
5. 4th question for 5GH/s

Thanks