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Update 2007/11/02: Sony just denied the change of the technology from 90nm to 65. This is something that will happen over the next month, they said. There have been speculations already that the new 40GB model already supports the new smaller and cheaper 65nm Cell. So far this has not been confirmed by Sony or any other unofficial source. Now, the German c't magazine talks about this in its newest Monday edition and actually confirms the 65nm Cell (on the right) being used. It is still unclear to me if this is also true for the RSX. At least c't says so. Unfortunatly you can not tell by the size of the chip what kind of technology it is using. Keep in mind that for instance the RSX chip on the left also covers the graphics RAM which is still the same size. This would of course explain the lower power consumption that is even listed by Sony, which is about 60 Watt less than the former models. But that's not all, the new model is almost half as loud as the old model making it barely recognizable with its 0.5 - 0.8 Sone. The new revision also features a smaller heatpipe, a revised Southbridge (CXD2984GB) and a battery cell for the system clock. 
It is obvious that the various connectors are at their old positions, contrary to the Ceramic White model. Still not sure why they did that. Two different versions at the same time makes no sense to me. Also check out the PCB's of the former Euro 60GB model as well as the original Japanese model. Interesting to see how the whole thing changes over time. If that's really the case, Sony could have considerably decreased the production cost over the old model, probably already gaining the the price reduction. Source: c't Magazine
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