“At its silicon core, the fourth-generation iPad is hardly an incremental upgrade, according to chip analysts,” Brooke Crothers reports for CNET.

“The new iPad’s A6X chip packs a brand-new graphics engine that boasts a serious step up in horsepower from the third-generation iPad’s A5X,” Crothers reports. “‘Nothing’s incremental about this. The A6X is one massive processing machine,’ Jim Morrison, a product manager at Chipworks, which does reverse engineering and patent-infringement analysis of semiconductors and electronic systems, told CNET.”

Crothers reports, “The graphics processing unit, or GPU, is a quad-core PowerVR SGX 554MP4 from Imagination, according to an analysis posted today by Anandtech. That SGX 554MP4 has raw performance of 76.8 GFLOPS, compared with the 38.4 GFLOPS rating for the quad-core Imagination chip in the third-generation iPad,”

Read more in the full article here.

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Benchmarks: Apple iPad 4′s A6X beats all comers in GPU performance – November 2, 2012