>motherboard that says 3200(O.C) and have 3200 ram, I will not be using more voltage to run it?
Correct.
You _SHOULD_ not have to make a voltage adjustment.
I'm leaving myself an out because you might end up with a board that's slightly off-spec. In which case, a rare case, you might have to make a slight upward tweak. And ... emphasize SLIGHT. Like, 0.005 volt steps, until things behave well.
This is the price of playing with cutting edge. When you first boot the board out of the box, it'll probably boot at 3000 no matter what. Or even lower, depending on the board.
After you get it booted and running, even install your OS, then you can go into your BIOS and start making adjustments.
You _SHOULD_ not have to bump the voltage, but remain open to the idea that you might have to if there's a boot problem related to the RAM. Also, if you really get into it, you might want to play with the individual timings (eventually), and then voltage adjustments might come into play again.
In 99% or more cases, though, you should not have to adjust voltage. You might even be able to reduce it and still get your native RAM speed running stable.
If you just want to get the system running before you install the OS, you can also consider making a live CD (or USB stick) with some flavor linux. It will allow you to see if the system is running at spec and maybe spot problems/troubleshoot the hardware before you do a full install. It's one way to track down installation problems/driver configuration issues that might be separate from hardware issues.
I can't get into this right now ... so if this looks interesting, check into the Friendly Linux Thread here and ask around for which flavor of live CD to try and what basic GUI-friendly tools to check system/GPU temps, CPU & RAM speeds, fan speeds, etc.
Don't forget there's always a Build Thread & a Stupid Questions Thread running here these days ... make use of those.
Luck to you.