The benchmarks indicate that the Apple A8X chip combined with the relatively (considering other Apple devices) amount of RAM have led to huge performance gains compared to the A8 chip found in the iPhone 6 and iPhone 6 Plus. According to Geekbench 3 multi-core benchmark test, the triple-core A8X powering the iPad Air 2 makes the tablet up to 55 percent faster than the iPhone 6 and iPhone 6 Plus with their dual-core A8 chips.
When comparing the new iPad Air 2 with iPad Air in the multi-core performance benchmark, the Apple A8X chip propels the new tablet to be up to 68 percent faster than the iPad Air with its 1.4GHz A7 chip. Primate Labs also published single-core performance benchmark test results for the iPad Air 2, where it outperformed all other iOS devices as well.In the single-core benchmarks, the iPad Air 2 was scored as roughly 13 percent faster than the iPhone 6 and iPhone 6 Plus and their A8 chip. On the other hand, the iPad Air 2's single-core performance was up to 23 percent faster than last year's iPad Air and its A7 processor.
iPad Air 2 with a 3-core processor is the fastest multi-core iOS device by a large margin. pic.twitter.com/xBnjG613ba-- Primate Labs (@primatelabs) October 21, 2014