The iPhone Duo unsurprisingly offers performance similar to the iPhone 18 Pro, according to an early iPhone Duo benchmark shared on Geekbench 7. Both devices are equipped with Apple's 2nm A20 Pro chip with a 6-core CPU and a 7-core GPU.
The benchmarked iPhone Duo (iPhone19,4) is running iOS 27.1, as expected, and it had a single-core score of 3986 and a multi-core score of 11067. That's in line with multiple benchmarks collected from iPhone 18 Pro and iPhone 18 Pro Max models.
Scores vary from test to test, so while the result does fall short of the top iPhone 18 Pro benchmark scores, we're only viewing a single score. The iPhone Duo has the same 6-core CPU with a 4.93GHz base frequency that's identified in iPhone 18 Pro benchmarks, and it lists 11.30GB memory, which means 12GB of RAM.
While the iPhone Duo and iPhone 18 Pro models use the same A20 Pro chip, there could be differences in real-world performance based on thermal management, the iPhone Duo's two screens vs. a single screen, and other factors.
Apple says the A20 Pro offers up to 20 percent faster CPU performance than the A19 Pro and up to 40 percent faster GPU performance. GPU speeds were not tested.
Pre-orders for the iPhone Duo will start on October 16, and a launch will follow on October 23.
