Venture Beat claims a “very trusted” source has informed them that Apple’s PA Semi team might not have been behind the new iPad ’s Apple A4 chipset: PA Semi didn’t do the A4. It was the existing VLSI team. Apple has made custom chips for years like the Northbridges for G4 and G5. This information was appended to an article that focused on how great, and power-efficient, PA Semi’s chip design really was. So why wouldn’t Apple use them?