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What are the system requirements for working with complex geometry in Blender? Things like RAM, GPU, CPU etc.?

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    $\begingroup$ Welcome to Blender.SE. Hardware related questions are generally considered off-topic. Also your question is a bit vague. What would you call a 'large scene'? $\endgroup$ – iKlsR Aug 7 '13 at 4:22
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Blender's website has a page dedicated to this, it is now dated a few years but is still useful (was updated for 2.6).

http://archive.blender.org/features-gallery/requirements/index.html

If you are considering building a PC for 3D, anything from Average and up should suffice for fairly complex scenes.

Minimal specs for Hardware

  • 32 bits, Dual Core CPU with at least 2 GHZ, and SSE2 support.
  • 2 GB RAM
  • 24 bits 1280x768 display
  • Mouse or trackpad
  • OpenGL Graphics Card with 256 MB RAM

Average specs for Hardware

  • 64 bits, Quad Core CPU
  • 8 GB RAM
  • Full HD Display with 24 bit color
  • Mouse or trackpad
  • OpenGL Graphics Card with 1 GB RAM

Production specs for Hardware

  • 64 bits, Dual 8 Core CPU
  • 16 GB RAM
  • Two times Full HD Display with 24 bit color
  • Mouse + tablet
  • Dual OpenGL Graphics Cards, quality brand with 3 GB RAM

Also related: What are the best graphics cards for cycles? and How important is a GPU for modeling?

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