Does the Oil pressure increase with the rpm's?

[Buckeye]

Does the oil pressure increase with rpm's? My turbo is fed off of an adapter at the oil filter. How much does the oil pressure increase at full throttle? The turbo oil return line is fed to the crankcase. If it is returning the oil at more pressure, is it contributing to the oil blowing out of the breather at full throttle?

 

[treewhacker]

It is regulated somewhere just over 60#. It reaches that pressure at fairly low RPM's, I think about 4,500.