The HP Pavilion Aero 13 is available with the following CPUs:

• AMD Ryzen 5 8640U (6 cores/12 threads, up to 4.9 GHz, 16MB L3 cache)
• AMD Ryzen 7 8840U (8 cores/16 threads, up to 5.1 GHz, 16MB L3 cache) 
• AMD Ryzen 7 8840HS (8 cores/16 threads, up to 5.1 GHz, 16MB L3 cache)

These CPUs are a mix of low-wattage U series for thin and light laptops and moderate-wattage HS series for higher performance in thin chassis laptops. The U-series CPUs are better for people who need to perform light productivity tasks like word processing, spreadsheets, or media consumption. However, the Ryzen 7 8840U will have enough power for some more demanding tasks as long as the material isn’t overly complex. The HS-series processor can handle fairly demanding tasks and is the better choice for people who need to do programming or video editing. In multi-threaded applications, the Ryzen 7 8840HS is noticeably faster than the Ryzen 5 8640U, almost 30% faster in some workloads.