3d is not in my photoshop cc, i hav 2 gb ram and dual core processor
Please read this (specifically the part about »pertinent information«):
What is your GPU and what are your Performance preferences?
Is the 3D item completely missing from the menu?
If so you may have to uninstall, clean and install anew.
Use the CC Cleaner Tool to solve installation problems | CC, CS3-CS6
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