The i3 would be fine for video editing though the i5 would be slightly better. It was hard to dig up solid numbers but the i5-430M looks to be about 2-8% faster than i3-330M on video related tasks (most of this is probably because the i5-430M is about 100mHz faster). Both outperform a similarly clocked Core2 duo by 20-55% in video editing and burning (depending on the exact task). Video editing is one of the key consumer features Intel targets for acceleration each generation so each new CPU architecture should bring you a performance jump. You are also going to see a big gain over the Core2 because the i3 and i5 have hyperthreading which video editing can make good use of. The integrated Intel HD graphics are fine for video editing. The only applications that will greatly benefit from a discrete video chip are 3D (games and CAD).

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