NEON is included in the A4's Cortex A8. In fact, NEON was added back in the 3GS: http://wanderingcoder.net/2010/06/02/intro-neon/
Only the 2G and the 3G don't have it.
So does the iPhone 4S have a different kind of DSP, too?
NEON is included in the A4's Cortex A8. In fact, NEON was added back in the 3GS: http://wanderingcoder.net/2010/06/02/intro-neon/
Only the 2G and the 3G don't have it.