Notebookcheck recently published the first review of AMD Zen4 laptop CPU from the 7045HX range. The review team tested the 16-core Zen4 Raphael on a new ASUS ROG Zephyrus Duo. The review primarily focuses on CPU performance, with gaming performance details to be shared later (although a teaser was given).
Based on the overall results, the Ryzen 9 7945HX, which is the flagship model from the 7045 series, performed almost as well as the Intel flagship Core i9-13980HX CPU in the single-core test and similarly in the multi-core test, with a difference of up to 5%. It’s worth noting that the ROG Zephyrus Duo used DDR4-4800 memory, while the MSI TITAN GT77 HX 13VI (the platform for Intel HX series) used faster DDR5-5600 memory.
The AMD CPU in question boasts 16 cores and 32 threads, which are all classified as ‘big’ cores, in contrast to Intel’s hybrid Core/Atom architecture. Hence, it shouldn’t come as a surprise that AMD’s CPU outperformed Intel’s in the multi-core test, despite having the same number of threads.
What’s worth noting is that the Ryzen 9 7945HX consumes less power compared to Intel’s 13th Gen Core-HX series, with a maximum power consumption of 120W as opposed to Intel CPUs that can go up to 150W. The reviewer conducted a test where both CPUs were subjected to the same power limitation, and concluded that the Zen4 architecture is 22% faster when both CPUs are capped at 120W.
Furthermore, the CPU under review is substantially faster than its predecessor, the Ryzen 9 6900HX Rembrandt Zen3+ SKU, as tested using the same ASUS ROG Duo laptop from 2022.
The site has also briefly touched on the gaming performance of the CPU, with more comprehensive tests scheduled to be shared later. Due to the higher power and single-core frequency of Intel CPUs, they reportedly deliver up to 7% better gaming performance. While both the MSI and ASUS systems support GeForce RTX 4090 GPU up to 175W TGP, there may be other factors at play that will be elaborated upon in the full review.