The AMD Ryzen 9 4900H: A Mobile SoC Powerhouse

AMD Ryzen 9 4900H


For high-end laptops, the AMD Ryzen 9 4900H is a potent mobile SoC (System-on-a-Chip). It is a Ryzen 4000H series chip that was released in March 2020 and offers excellent performance in a small package. The SoC is based on the Renoir architecture and has eight Zen 2 microarchitecture-based cores with a base frequency of 3 point 3 GHz and a turbo boost of up to 4 point 4 GHz. The SoC also has SMT (Simultaneous Multi-Threading) or Hyperthreading, which offers 16 threads.


The Ryzen 9 4900H is only marginally faster than the Ryzen 7 4800H, according to the information at hand. Despite a 400 MHz base clock increase and a 200 MHz boost clock, the cooling system and TDP (Thermal Design Power) settings determine the actual performance gain. The Ryzen 9 4900H is comparable to Intel's top model, the i9-9980HK, in terms of chip comparisons. The Ryzen 9 4900H can thus easily handle demanding tasks and gaming.


The AMD Ryzen 9 4900H includes a Radeon RX Vega 8 graphics card with 8 CUs in addition to its potent CPU cores. With support for both energy-efficient LPDDR4-4266 RAM and DDR4-3200 RAM, the dual-channel memory controller offers enough memory bandwidth for demanding applications. Additionally, the SoC has 12 MB of Level 3 cache.

TDP and target market

The AMD Ryzen 9 4900H has a 45 Watt TDP, which is designed for large and hefty laptops. In other words, the SoC is made for intensive and demanding applications like gaming and content creation.

Comparison with Other Ryzen 4000H Models

One of AMD's Ryzen 4000H processors is the Ryzen 9 4900H, which belongs to the Renoir (Zen 2) series. The key features of the various models in the series are compared in the table below.

Model Clock Speed (GHz) Cores/Threads Level 3 Cache (MB)
AMD Ryzen 9 4900H 3.3 - 4.4 8/16 8
AMD Ryzen 9 4900HS 3.0 - 4.3 8/16 8
AMD Ryzen 7 4800H 2.9 - 4.2 8/16 8
AMD Ryzen 7 4800HS 2.9 - 4.2 8/16 8
AMD Ryzen 7 4980U 2.0 - 4.4 8/16 8
AMD Ryzen 7 4800U 1.8 - 4.2 8/16 8
AMD Ryzen 5 4600H 3.0 - 4.0 6/12 11
AMD Ryzen 5 4600HS 3.0 - 4.0 6/12 8
AMD Ryzen 7 4700U 2.0 - 4.1 8/8 8
AMD Ryzen 5 4680U 2.2 - 4.0 6/12


For demanding laptops, AMD created the Ryzen 9 4900H, a premium mobile SoC. Based on the Zen 2 microarchitecture, it has 8 cores running at a base frequency of 3 points 3 GHz, with Turbo boosting the speed to 4 points 4 GHz. DDR4-3200 and LPDDR4-4266 RAM are supported by the SoC, which also incorporates a Radeon RX Vega 8 GPU. With a TDP of 45 Watts, it can power large, heavy laptops that are used for demanding tasks and video gaming. It is comparable to Intel's i9-9980HK and slightly faster than the Ryzen 7 4800H. The Ryzen 9 4900HS, Ryzen 7 4800H/HS, Ryzen 7 4980U, Ryzen 7 4800U, Ryzen 5 4600H/HS, Ryzen 7 4700U, and Ryzen 5 4680U are additional Ryzen 4000H models.

Features and performance

One of the quickest models in the Ryzen 4000H series, the Ryzen 9 4900H provides top-tier performance for demanding applications and gaming. The SoC can handle several tasks at once with ease thanks to its 8 cores and 16 threads. Even under the most difficult conditions, quick and trouble-free operation is guaranteed by the 3.3 GHz base clock, which can be increased to 4.4 GHz. A variety of performance-improving features are also included in the chip, including XFR, FMA3, SSE 4.2, AVX2, and SMT.

Graphic design and memory

A Radeon RX Vega 8 GPU is integrated into the Ryzen 9 4900H in addition to the potent CPU, providing additional performance for demanding graphics applications. The GPU has 8 CUs, clocked at a frequency of 1750 MHz, providing smooth and responsive graphics performance. Both DDR4-3200 and LPDDR4-4266 RAM are supported by the dual channel memory controller, which offers plenty of memory bandwidth for demanding software and video games. The SoC also has 12 MB of level 3 cache, which enables quick and responsive access to frequently used data.

Temperature and energy usage

A big and heavy laptop can use the Ryzen 9 4900H because of its 45 Watt TDP. The TDP of larger laptops is balanced with this TDP to keep the SoC within its allowed operating temperature range. The chip's maximum operating temperature of 105°C offers a safe operating limit for demanding applications.

Comparison to Other Models

The Ryzen 9 4900H is slightly faster than the Ryzen 7 4800H when compared to other Ryzen 4000H models, but it performs similarly to Intel's i9-9980HK. The Ryzen 7 4800H has a base clock frequency of 2.9 GHz, boosting up to 4.2 GHz, while the Ryzen 7 4980U has a base frequency of 2.0 GHz, boosting up to 4.4 GHz. In comparison to the Ryzen 7 4700U, which has 8 cores and 8 threads and operates at speeds ranging from 2 GHz to 4 GHz, the Ryzen 5 4600H has 6 cores and 12 threads and operates at speeds between 3 and 4 GHz. For various laptop designs and usage scenarios, these models offer a variety of performance options.


The demanding laptops were designed with the AMD Ryzen 9 4900H in mind. It is a strong and flexible mobile SoC. With 8 cores, 16 threads, and a powerful GPU, the SoC is capable of handling demanding applications and games with ease. The TDP of 45 Watts, combined with the 7 nm manufacturing process, provides improved performance per Watt compared to previous generations. Both demanding users and gamers will find the Ryzen 9 4900H to be a great option when looking for high-end performance in a portable form factor.

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