Dilema

[Kimica]

Board Biostar TA770E and AMD Phenom II X2 545 good or ....

 

[Bluescreendeath]

?

or ASUS M4N78 and Phenom II x4 955...very good...

or ASUS P6T and i7 920...great...

 

[enzo matrix]

Board Biostar TA770E and AMD Phenom II X2 545 good or ....

With the information given, a proper answer cannot be given to you. "Good" is relative. Both in opinion, the performance you expect, what you intend to do and the rest of the system components.