The first reviews of AMD’s Ryzen 9 6900HS are out, and the Rembrandt top chip looks quite competitive against Intel’s 12th Gen Alder Lake-P flagship. A review from LinusTechTips shows the Ryzen 9 6900HX beating the Core i9-12900HK when the boost TDP is set under 50W on both SoCs. This is very apparent in Blender. At 25W, the Ryzen 9 6900HS is most competitive finishing the render more than a minute before the Core i9-12900HK. The lead decays as the power ceiling is raised on both systems, with the Ryzen 9 6900HS leveling with its competitor at 50W and 60W, and losing at 70W.
In Cinebench R23 multi-threaded, the Ryzen 9 6900HS at 45W is just around 10% slower than the Core i9-12900HK despite having a base TDP that’s less than half as much (110W vs 45W). This may seem like a loss for the Red Team, at first sight, but 10% less performance for several hours of additional battery life is an excellent deal.
Compared to its predecessor the Ryzen 9 5900HS, the 6900HS offers two times as much battery life, lasting for close to eleven and a half hours while playing YouTube.
The other major advantage of the Ryzen 9 6900HS is its potent RDNA 2 iGPU. Up to 12 Compute Units, each paired with a ray accelerator, and robust LPDDR5 memory make sure that the GPU is well fed. The refined N6 node allows the core to run at 2.4GHz under heavy loads.
Expectedly, the Radeon 680M on the Ryzen 9 6900HS is approximately 2x faster than the Core i9-12900HK’s Gen12 iGPU in Forza Horizon 5 (1080p Low).
AMD’s own slides show the Ryzen 9 6900HS being up to 2.6x more power-efficient than the Core i9-12900HK. This is most apparent in multi-threaded workloads where the latter loses the hybrid core advantage as all physical threads are kicked into gear. In such applications with higher power limits, the Alder Lake-P parts perform similar to the Rembrandt parts, all the while drawing significantly more power.