The 4th-generation iPad is a minor upgrade. Likely launched to ramp up holiday sales ahead of a more significant upgrade in March, the tablet is almost identical to the 3rd-generation iPad. The iPad 4's biggest upgrade is its A6X chip. Though iPad 3 owners may have a hard time justifying an upgrade, early benchmarks show that the new SoC offers a significant performance boost.
Read the full article: iPad (4th generation) benchmarks high, sells out