CPU: Anthlon Phenomenon II X4
mainly for gaming ang CAD application
If the boards you selected cost the same, then go for the ASUS.
By the way, have you already bought the CPU and the GPU? The 9500GT will be bottleneck for your system if you really want to play games specially on high resolution. If your monitor resolution is 1366x768 or below then the 9500GT might do it but then your Phenom II X4 will be an overkill.
I wouldn't go for either of those. As mentioned above, with an AMD chip, you're better off going with a socket AM3 board. Anything else and you'll be stuck on DDR2 memory, which is the old outgoing technology.
Also, that video card is a real piecea poo, and is going to be the weak link in your system by far. Upgrade it to something decent as soon as possible if you want to do any serious gaming; the 4850 is probably about where you should be looking to start.