It looks as if your GA-MA790GP-DS4H is the same as my GA-MA790GP-UD4H. Same chip set and cpu support from what I can tell. Certain minor differences are enough to change the model number but not the board-or it's behavior-in any significant way. You'd probably have to be a power user to really understand and I am not.
Is it a good board? Hard for ME to tell because I haven't used that board. I will let you know if my board works good soon though and you should be able to make a reasonable comparison from that. (Hopefully)