do you think 22 multi is ok? , i saw several people using 20 x 210 to get 4.2 ghz on this chip.. what is better?
No, keep the multi where it is, less stress on the system overall. You wouldn't notice a difference clock for clock with a higher base clock and lower multiplier. It's like the people with the older systems that want to set the FSB to 450x8 instead of 400x9 on core 2 setups. Just unnecessary stress on the system.