Apple‘s A5 chip, which powers the iPhone 4S and the iPad 2, is now being produced in a Texas factory owned by Samsung, Reuters reports, citing sources familiar with the operation.”

“Until now, Apple has mainly relied on Korean and Chinese manufacturers that produced the chips for Apple’s products on their soil. Samsung’s new $3.6 billion plant in Austin is the size of nine football fields (1.6 million square feet), and it’s almost solely dedicated to producing Apple chips. According to the Austin Chamber of Commerce, Samsung’s factory is the largest foreign investment in Texas, worth about $9 billion.

The 45 nm Apple A5 chip runs on either 800 MHz or 1 GHz clock speed, and it’s twice as powerful – according to Apple – as its predecessor, the A4.”