This was submitted by a reader in Germany (thanks R.)
Go to http://www.nikon-muenchen.de/deutsch/318/26/117001/susy%7CD3_Buffer_FirmUp_De01.pdf/download.html
Do you see something unusual on the first page?
I didn’t.
Than it was explained to me that the memory buffer was increased for the current D3 model without making too much noise:
nikonusa.com D3 brochure, page 20: Buffer capacity 18, 12bit NEF
above german link: after the upgrade Buffer capacity 43, 12bit NEF
Preparing for the D3x?