With the announcement at the Financial Analyst Day last year,Zen 4c architectureAfter being used in cloud service server processor products, AMD also further explained the design of thin and light notebook computers announced in May this year, and strengthened the performance of display and AI computing.Ryzen 7040U series processorsIn fact, it has also introduced the Zen 4c architecture, and emphasized that the only difference between it and the standard Zen 4 architecture is the occupied area. The instructions per cycle (IPC) and cache design are exactly the same, with only obvious differences in power consumption performance.
Perhaps to emphasize the difference in thin and light laptop design applications, AMD stated that its design using a combination of Zen 4 and Zen 4c architectures is fundamentally different from its competitor Intel's new processors, which use a combination of P Core performance cores and E Core energy-saving cores.
AMD emphasized that compared to Intel's P Core and E Core designs, the Zen 4 architecture and Zen 4c architecture are essentially identical, so they can both correspond to the same instruction set, instruction per cycle performance, multi-core computing, etc., and therefore have greater application flexibility in design.
The combination of Zen 4 and Zen 4c architectures is actually the latter that meets the energy-saving operation requirements, but its own computing performance is the same as the standard Zen 4 architecture. Even the cache design is exactly the same, and they are even built on TSMC's 5nm process. The main difference is the different area occupied by the two. The Zen 4 architecture design occupies an area of 3.83mm2The Zen 4c architecture design occupies an area of 2.48mm2, reducing overall power consumption by approximately 35% in size.
With this design, AMD says it can achieve the same instruction-per-cycle computing performance at a thermal design power consumption of less than 15W, meaning it can maintain the same execution performance with lower power consumption, or provide greater flexibility in product design, and even meet the design requirements of thinner and lighter laptops or those with longer battery life. It can also squeeze out higher computing performance when necessary, and generally achieve longer device battery life through lower power consumption.
In the Ryzen 7040U series of processors, AMD will use the Zen 5c architecture combination in the newly added Ryzen 7545 3U and the existing Ryzen 7440 4U. The former corresponds to 6 cores and 12 execution threads, with a base operating clock of 3.2GHz and a maximum operating clock of 4.9GHz. It is equipped with a total of 22MB of cache and is equipped with a Radeon 740M graphics design. The thermal design power consumption is between 15W and 30W.
The latter has 4 cores, 8 threads, a base operating clock of 3.0GHz, a maximum operating clock of 4.7GHz, and a total of 12MB cache. It also has the Radeon 740M graphics design and a thermal design power consumption between 15W and 30W.
Among them, the Ryzen 5 7545U is composed of 2 sets of Zen 4 architecture cores and 4 sets of Zen 4c architecture cores, but the architecture core combination of Ryzen 3 7440U has not been announced. However, there are reports that this processor is designed with a single set of Zen 4 architecture cores and 3 sets of Zen 4c architecture cores, just as AMD emphasizes that it can have greater flexibility in core combination.
Furthermore, the previously announced Ryzen Z1, designed for handheld gaming, is built with two Zen 2 cores and four Zen 4c cores, resulting in lower power consumption while still delivering high computing performance. However, the higher-performance Ryzen Z4 Extreme is built entirely with Zen 4 cores.
