https://wccftech.com/2022-iphone-se-a15-bionic-gets-4-core-gpu/

Using lower-binned chipsets is not a new concept from Apple, as we have seen the company employ such measures in various products to save production costs. Getting the 2022 iPhone SE down to its $429 price point also required some shortcuts, and of them was using an A15 Bionic with fewer GPU cores.

Last year, it was the first time Apple used a varying number of GPU cores in a chipset specifically made for iPhones. With the iPhone 13 and iPhone 13 mini, the SoC had a 4-core GPU, while the premium iPhone 13 Pro and iPhone 13 Pro Max have a 5-core GPU. In terms of performance, the 5-core GPU obtained a 55 percent graphics performance increase against the A14 Bionic GPU.