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What is the difference between 32bit and 64 bit and which should I chose?

I installed Ubuntu Natty 64-bit on HP machine, with the following hardware:

  • AMD Phenom 8600 triple core processor
  • 3GB RAM
  • GeForce 6150SE nForce 430

But I feel that it's so slow compared with the same machine with Ubuntu Lucid 32-bit with PAE.

What do you recommend, install Natty 32-bit? Get back to Lucid or Maverick?

Some tip for speed up my machine? Should I install gnome?

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marked as duplicate by James Mar 6 '12 at 15:55

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

It's the same, and, it feels slow because of some COmpiz settings that slow down the machine, and you already have Gnome, Unity is Gnome, it's just a shell on top of it. – Uri Herrera Jun 18 '11 at 19:29
ok, but there is a way to get better performance? – raulricardo21 Jun 18 '11 at 20:03

Try installing preload and prelink. they are both in the default repositories. Check out this guide for prelinking:

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btw, this is for speeding up the machine. – Gothic_Day Jun 20 '11 at 2:42

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