New MacBook Pro 17" i7 Hard Drive Part number?

Hi there I have a new 17 inch MBP i7 and am curious as to what the part/model number of the 500GB 7200 rpm Hard drive is that Apple uses in the MBP when you order it online from their website.

Looking at the 15 inch i5 teardown and seeing a seagate drive in there was surprising to me since I have the 500 5400 RPM drive in mine, and disk utility reports the drive as a Hitachi HTS545050B9SA02. I didn't think that Apple would use two different 5400 RPM drives in the 15 - 17 inch MBPs.