Pretty beefy from the look of them:

http://news.com.com/PlayStation+3+stats+spotlighted/2100-1043_3-5709571.html?part=rss&tag=5709571&subj=news

And some pictures are here:

http://news.com.com/Photos+PlayStation+3+unmasked/2009-1043_3-5710059.html?part=rss&tag=5710059&subj=news

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