The Early 2009 Mac Pro—also known as the Mac Pro 4,1—introduced Intel's Nehalem architecture to Apple's line of professional desktop computers in March 2009. The Mac Pro 5,1 used the same interior design but received further CPU updates in 2010 and 2012.
How are you seeing that information without a display?
by Jordan Fischer
Screen sharing
by Ben Capehart
I am not sure, but I think it is referring to the Graphics card inside your Mac.
by Repair Skeleton
23" screen? why does it say that part
by Ben Capehart