Maybe a easy question for those who knows it, but i have no clue 
How is it even possible that my AMD 7970 can use up to 3802 MB dedicated memory when it only has 3 GB = 3072 MB?
And one thing more. Why does my rig use dynamic GPU memory when only about 10% is used from the dedicated memory?
I might be wrong, but shouldn't the dedicated memory be used up before it starts to use dynamic memory?
How is it even possible that my AMD 7970 can use up to 3802 MB dedicated memory when it only has 3 GB = 3072 MB?
And one thing more. Why does my rig use dynamic GPU memory when only about 10% is used from the dedicated memory?
I might be wrong, but shouldn't the dedicated memory be used up before it starts to use dynamic memory?