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I had an amd athlon tf-20 cpu which was a single core that ran at 1.6GHz, 2 Gig ram and an HD 3200. Unity runs slow as hell. I upgraded my cpu to an amd turion tl-56 dual-core which runs at 1.8GHz, and Unity still runs slow. My sister's laptop of 5 years with an intel celeron dual-core runs unity way faster than my laptop. Can anyone suggest the problem here and a solution?...please.

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You need to have a decent graphic card and the corresponding drivers installed to run Unity.

If you don't have these then you can try Unity 2D (which will be a lot faster on a old graphic card), to install it on 11.04 :

Then you restart and when logging in select "Unity 2D" instead of "Ubuntu".

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But my sister's 5 year old crappy laptop runs ubuntu 11.04 very smooth. – rockr101 Oct 17 '11 at 3:24
Maybe she have an old NVidia graphic card (which are still supported by proprietary drivers) and you have an old ATI graphic card (which are not at all). – Nyamiou The Galeanthrope Oct 17 '11 at 3:28
She has intel graphics and my ati chip is just 2 years old...don't know. – rockr101 Oct 17 '11 at 4:23

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