Im running xp64 …Zbrush 3.1 is in my 32bit program files how do I Kno if zbrush is runnin 64bit???
ZBrush is a 32-bit app. On a 64-bit OS, though, it can use up to 4 GB of your system’s RAM (rather than the 2 GB that a 32-bit OS limits it to) and will see performance boosts due to the OS’s improved use of your 64-bit CPU.