> AFAIK those 1.5 GHz 32MB are only overclocked 1.42 GHz versions. Some companies
> sold refurnished versions which they also overclocked.

Alright, thanks. So not overclocked by Apple, just like I said. Whether it's overclocked by such company (different from Apple) or by end user doesn't make much difference on the second hand market, in my opinion.