which 1 are better.. ONLINE BIOS UPDATE or M-FLASH ??
M-FLASH are better i think..

I ody check CPU support on MSI web
http://www.msi.com/product/mb/740GM-P25.ht...?div=CPUSupport

Im phenom ii x2 be 555.. I wanna try once..
Have any idea or advice??

Rely fraid mobo crush...

Some tips for tweaking performance for dual core or quad core cpu at Window 7;
*Using MSCONFIG:
(1) Go to the “Start Menu“, type “MSCONFIG ” in the search box and press Enter. The Windows system configuration tool will start. It might ask you for Administrator password before continue.
(2) Click the “Boot” (2nd) tab
(3) Click “Advanced Options” button
(4) Select the number of processors you have and the amount of memory available. For example, if you’re using a Dual Core processor then you should select “2″ from processors drop down menu, if you have a Quad Core processor, you should select “4″ from the processor drop down menu, etc.
(5) Select your numbers of memory ram also '4gb' (4096) or '8gb' (8192) etc.
(6) Now Press “Ok“, then “Apply“, MSCONFIG might ask you to re-boot your computer. 

oh, like that oh, the name change is permanent.