The AMD Ryzen 7 4800HS is a mobile SoC for big laptops based on the Renoir architecture. The 4800HS integrates all eight cores based on the Zen 2 microarchitecture. They are clocked at 2.9 (guaranteed base clock) to 4.2 GHz (Turbo) and support SMT for a total of 16 threads. The chip is manufactured on the modern 7 nm TSMC process and partly thanks to it AMD advertises a 2x improved performance per Watt for the Renoir chips. The 4800HS is the 35 Watt version (-10 Watt) of the Ryzen 7 4800H.
The Ryzen 7 4800HS should offer a similar performance as the Ryzen 7 4800H. According to AMD, the Ryzen 7 4800H is 5% faster in Cinebench R20 single thread test and 46 % faster in the multithreaded test compared to the Core i7-9750H (thanks to the 2 additional cores). That translates to a performance between a Intel Core i9-9880H and the i9-9980HK top model. The old Ryzen 3000 mobile chips (e.g. Ryzen 7 3750H) are easily bested in CPU-performance thanks to the additional 4 cores, Zen 2 microarchitecture, and higher clock speeds. That means the Ryzen 7 4800H should be able to handle all demanding tasks and gaming.
In addition to the eight CPU cores, the APU also integrates a Radeon RX Vega 7 integrated graphics adapter with 7 CUs at up to 1,600 MHz. The dual channel memory controller supports DDR4-3200 and energy efficient LPDDR4-4266 RAM. Furthermore, 8 MB of L3 cache can be found on the chip. See our hub page on the Renoir Processors for more information.
The TDP of the APU is specified at 35 Watt (default) and therefore 10 Watt less than the similar specified Ryzen 7 4800H. However, the chip is still aimed for big and powerful laptops.