I make a simple scene to clarify this problem.
1) import a 2048x2048 RGB 24bit texture, no mipmap.
![alt text][2]
2) create a new scene, then create a plane assigning a diffuse mat with this texture.
3) Run, the memory profiler tell me this texture consume **24mb** rather than **12mb** RAM.
![alt text][1]
It's insane since I can't use a texture simpler than this example, NO mipmap, NO scripting, NO GUI, just drag and run.
However, the memory size was exploded than expected.
Is it a bug?
My unity version is 4.6.5.
[1]: /storage/temp/50370-tex-profiler.png
[2]: /storage/temp/50369-tex-import.png
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