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Is there any difference between, for example, a 160GB model and a 320GB model aside from the HDD size? Does any model have newer, more powerful components?

Wikipedia suggests that there isn't a difference, however I'd like to be sure.

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Linking for relations - the data on slims specifically is still of interest to this broader question on all PS3 units. – Grace Note Apr 14 '11 at 17:59
up vote 5 down vote accepted

All slim models are identical. Only the HDD capacity will vary.
You can have the list of models here.

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Thanks, that's just what I wanted to know! – Jamie Schembri Apr 14 '11 at 18:10

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