Welcome Over Flanders Fields, Iambecomelife!
I run OFF with the quad core Intel Core i5-2500K, 3,3GHz.
I had overclocked it slightly, but I'm back to default, and it performs fine.
Your graphic card should do all it's work fine, I think; and the RAM is more than enough.
I would ask you to check my detailed advice for graphics setup, over at Combat Ace:http://combatace.com/topic/60374-graphics-setup-an-easy-pictorial-guide/
You should definitely try the slider settings like this:
Overall graphics: 5
Terrain Detail: 3
Scenery detail: 2
Effects Quality: 5
Winder's Terrain does look great at 3, and a higher resolution for the "tiles" is really not necessary.
I found it even looked too grainy for my taste, which makes it appear closer than it should from the air.
(But that is of course a matter of taste).
"Scenery detail" seem to be houses, trucks, trenches - all the models above the terrain tiles.
On 2 or 3 it will be great already.
Some say, Clouds make a difference for them, but I used an ATI HD4870, and they were always fine on 5.
At last, let me ask you for your town & country/state - I'd like to add your name
to our "OFF Pilots Maps" over at the other forum.