iPod Nano Sports SanDisk Memory Instead of Toshiba
The new iPod Nano 7th generation apparently does have a slight hardware difference from the previous model.
The new iPod Nano 7th generation came along as a refresh with the iPhone 4S announcement on Tuesday at Apple's, "Let's Talk iPhone" event. The new iPod Nano looks like a complete replica of the iPod Nano 6th generation. For the most part - it is. The software update from Apple for the iPod Nano (1.2) brings 7th generation icons to the 6th generation iPod Nano along with some new clock faces. The update almost brings the 6th generation to the same page as the 7th generation iPod Nano.
Perhaps one of the only differences that tinkerers have found, is that the new iPod Nano sports a SanDisk branded NAND flash memory module instead of the usual Toshiba memory module. Below is a picture showing the difference, Toshiba (6th generation) on the left, and SanDisk (7th generation) on the right:
There are a couple more differences, for one, the new 7th generation iPod Nano doesn't need the added devices for Nike's exercise integration. Everything you need is built in. For the 6th generation iPod Nano you used to need to buy those materials separately. No other major hardware changes have been discovered.