AMD Ryzen 7 5800U vs Intel Core i7-11390H

AMD Ryzen 7 5800U

The AMD Ryzen 7 5800U is a processor for thin and light laptops based on the Cezanne generation. The R7 5800U integrates all eight cores based on the Zen 3 microarchitecture and is the fastest U-series processor at launch. They are clocked at 1.9 (guaranteed base clock) to 4.4 GHz (Turbo) and support SMT / Hyperthreading (16 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 eight CPU cores, the APU also integrates a Radeon RX Vega 8 GPU with 8 CUs at up to 2000 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

The average 5800U in our database matches the Core i5-11260H and, perhaps a little disappointingly, the Ryzen 7 4800U in multi-core performance.

Thanks to its decent cooling solution and a long-term CPU power limit of 22 W, the ProBook x360 435 G8 is among the fastest laptops powered by the 5800U that we know of. It can be more than 10% faster in CPU-bound workloads than the slowest system featuring the same chip in our database, as of August 2023.

Power consumption

This Ryzen 7 series chip has a default TDP (also known as the long-term power limit) 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. Choosing the lowest value would allow one to build a passively cooled system around the Ryzen, however, most laptop manufacturers will do the opposite to extract as much performance out of the chip as possible.

The Ryzen 7 5800U is built with TSMC's 7 nm process for average, as of mid 2023, energy efficiency.

Intel Core i7-11390H

The Intel Core i7-11390H is a high-end quad-core SoC for thin and light gaming laptops and mobile workstations. It is based on the Tiger Lake H35 generation and was announced in mid-2021 as a refresh. It integrates four Willow Cove processor cores (8 threads thanks to HyperThreading). The base clock speed depends on the TDP setting and can vary from 2.9 (28 W TDP) to 3.4 GHz (35 W). Compared to the i7-11375H, the 11390H can now also boost with two cores up to 5 GHz and all four cores can reach a 300 MHz higher clock speed of 4.6 GHz. Both i7 use the whole 12 MB level 3 cache.

The SoC also includes the improved Xe iGPU with all 96 EUs enabled clocked at up to 1400 MHz.

Furthermore, Tiger Lake SoCs add PCIe 4 support (four lanes), AI hardware acceleration, and the partial integration of Thunderbolt 4/USB 4 and Wi-Fi 6 in the chip.

All articles on Tiger Lake can be found on our Tiger Lake architecture hub.

Performance

The average 11390H in our database matches the AMD Ryzen 5 4600U and the Intel Core i7-10710U in multi-thread performance to be a decent mid-range chip, as of late 2021 - provided one isn't too picky when it comes to load times.

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

Power consumption

This Core i7 series chip has a default TDP of 28 W to 35 W, the expectation being that laptop makers will go for a higher value in exchange for higher performance. Either way, a proper coolu\ing solution is a must.

The CPU is built with Intel's third-gen 10 nm manufacturing process marketed as SuperFin for lower-than-average, as of mid 2023, energy efficiency.