Processor And RAM
The iPhone XS and iPhone XS Max both will be powered by Apple's next generation of processor, dubbed the A12 Bionic, which Apple says will give a modest increase in speed over the iPhone X's A11 Bionic chip. The six-core CPU in the A12 processor includes two high-performance cores (running at up to 15 percent faster speeds than the A11), along with four low-power cores for less-intensive tasks (featuring up to 50 percent improved energy efficiency over the A11). The four-core GPU in the A12 will boost graphics performance by up to 50 percent, meanwhile.
Apple didn't disclose the RAM on the new iPhones, although Geekbench results suggest that at least one of the new phones will come with 4 GB of RAM--which would put it above the iPhone X at 3 GB of RAM.