Though Apple's iPhone 13 models are not due to arrive in customer hands until Sept. 24, benchmark scores from the smartphone have surfaced and show the Apple's A15 Bionic processor includes massive GPU improvements over iPhone 12 Pro's A14 chip.

A Geekbench score posted to the Geekbench Browser on Wednesday sees an "iPhone14,2," thought to be an iPhone 13 Pro, achieve a Metal score of 14216 while running iOS 15 on an A15 system-on-chip. The result is a 55% improvement over the A14 in Apple's iPhone 12 Pro, which posted a score of 9123, according to benchmarks submitted to Geekbench.

The benchmark also reveals a RAM allotment of 5.56GB, which can be translated to 6GB given operational load, Geekbench algorithms and other considerations. That finding is in line with reports that iPhone 13 is outfitted with the same amount of memory as iPhone 12.

MacRumors reported on the Geekbench score earlier today.

Apple's A15 variant in the iPhone 13 Pro and iPhone 13 Pro Max features a new five-core GPU that the company says delivers "up to 50% faster graphics performance than any other smartphone chip." A four-core GPU is deployed in the A15 used by iPhone 13 and iPhone 13 mini.

Full benchmarks for the latest A-series silicon have yet to appear. Apple failed to detail A15's CPU performance in its "California Streaming" event on Tuesday, leading some to believe that the chip does not achieve the year-over-year improvements typical of Apple's flagship mobile chips.

Source: Appleinsider