AMD Ryzen 5 5600U vs AMD Ryzen 9 6900HX vs AMD Ryzen 9 6900HS

AMD Ryzen 5 5600U

The AMD Ryzen 5 5600U, not to be confused with Intel's Core i7-5600U, is a fairly fast Cezanne family processor designed for use in thinner, lighter laptops. The R5 5600U integrates six of the eight cores based on the Zen 3 microarchitecture and is the third fastest U-series processor at launch. The cores are clocked at 2.3 (guaranteed base clock) to 4.2 GHz (Turbo) and support SMT for a total of 12 threads. The chip is manufactured on the modern 7 nm TSMC process.

The new Zen 3 microarchitecture offers a significantly higher IPC (instructions per clock) compared to Zen 2. For desktop processors AMD claims 19 percent on average and in applications reviews showed around 12% gains at the same clock speed.

In addition to the six CPU cores, the APU also integrates a Radeon RX Vega 7 integrated graphics card with 7 CUs at up to 1800 MHz. The dual channel memory controller supports DDR4-3200 and energy efficient LPDDR4-4266 RAM. Furthermore, 16 MB level 3 cache (up from 8 MB at the 4800U) can be found on the chip.

Performance

This Ryzen 5 series chip is a solid mid-range CPU, as of early 2022. Its multi-thread benchmark scores nearly match those of the Intel Core i5-11400H (a much more power-hungry hexa-core chip designed for use in gaming laptops). While not nearly as fast as 12th generation Alder Lake-P processors, the 5600U should be good enough for the vast majority of users.

Thanks to its decent cooling solution and a long-term CPU power limit of 30 W, the IdeaPad 5 Pro 14ACN6 is among the fastest laptops powered by the 5600U that we know of. It can be more than 30% faster in CPU-bound workloads than the slowest system featuring the same chip in our database, as of August 2023.

Power consumption

This Ryzen 5 has a default TDP of 15 W, a value that laptop makers are allowed to change to anything between 10 W and 25 W with clock speeds and performance changing accordingly as a result. By going for the lowest value possible, it is possible to build a passively cooled system around this chip. Most laptop makers, however, will do the opposite to maximize performance.

The AMD Ryzen 5 5600U is built with TSMC's 7 nm manufacturing process for average, as of mid 2023, energy efficiency.

AMD Ryzen 9 6900HX

The AMD Ryzen 9 6900HX is a processor for big (gaming) laptops based on the Rembrandt generation. The R9 6900HX integrates all eight cores based on the Zen 3+ microarchitecture. They are clocked at 3.3 (guaranteed base clock) to 4.9 GHz (Turbo) and support SMT / Hyperthreading (16 threads). The chip is manufactured on the modern 6 nm TSMC process. The "X" in the name indicates the overclocking capabilities of the CPU.

The new Zen 3+ is a refresh of the Zen 3 architecture and should not offer a lot of changes. The chip itself however, offers a lot of new features, like support for USB 4 (40 Gbps), PCI-E Gen 4, DDR5-4800MT/s or LPDDR5-6400MT/s, WiFi 6E, Bluetooth LE 5.2, DisplayPort 2, and AV1 decode.

A big novelty is the integrated GPU Radeon 680M, that is now based on the RDNA2 architecture and offers 12 CUs at up to 2.4 GHz. It should be the fastest iGPU of all at the time of announcement.

Performance

The average 6900HX in our database edges out the Core i7-12800H just slightly while, a little disappointingly, not quite managing to leave the 6900HS behind in the dust. Don't get us wrong; this is still a brilliant CPU for your demanding apps and games, as of late 2022. It does lag behind some of the 12th generation Intel Core i9 options, though.

Thanks to its decent cooling solution and a long-term CPU power limit of nearly 90 W, the XMG Neo 15 2022 is among the fastest laptops built around the 6900HX that we know of. It can be at least 20% faster in CPU-bound workloads than the slowest system featuring the same chip in our database, as of August 2023.

Power consumption

This Ryzen 9 series chip has a default TDP, also known as the long-term power limit, of 45 W with the letter "X" indicating that the user is officially allowed to overclock the thing - leading to an increase in power consumption levels. Either way, a high-performance cooling solution is a must for a CPU like this.

The R9 6900HX is built with TSMC's 6 nm process making for very good, as of early 2023, energy efficiency.

AMD Ryzen 9 6900HS

The AMD Ryzen 9 6900HS is a processor for big (gaming) laptops based on the Rembrandt generation. The R9 6900HS integrates all eight cores based on the Zen 3+ microarchitecture. They are clocked at 3.3 (guaranteed base clock) to 4.9 GHz (Turbo) and support SMT / Hyperthreading (16 threads). The chip is manufactured on the modern 6 nm TSMC process. The HS variant offers a 10 W lower TDP and therefore a lower sustained performance than the HX version.

The new Zen 3+ is a refresh of the Zen 3 architecture and should not offer a lot of changes. The chip itself however, offers a lot of new features, like support for USB 4 (40 Gbps), PCI-E Gen 4, DDR5-4800MT/s or LPDDR5-6400MT/s, WiFi 6E, Bluetooth LE 5.2, DisplayPort 2, and AV1 decode.

Performance

The average 6900HS in our database matches the Intel Core i7-12800H in multi-thread performance while managing to keep up with the more power-hungry 6900HX. "Top of the crop" is precisely the right phrase to describe this Ryzen 9 series chip, as of Q4 2022, and it will have no difficulty ripping through any task imaginable for years to come.

Your mileage may vary depending on how high the CPU power limits are, and how competent the cooling solution of your system is.

A big novelty is the integrated GPU Radeon 680M, that is now based on the RDNA2 architecture and offers 12 CUs at up to 2.4 GHz. It should be the fastest iGPU of all at the time of announcement.

The TDP of the APU is specified at 35 Watts and therefore better suited for thin and light laptops. The power efficiency should be very good, thanks to the improved 6 nm process  and additional power saving features in the 6000 series.