Mobile processor with the best multi-performance, AMD Ryzen 9 7945HX

[smartPC사랑=이백현 기자] Starting with the Ryzen 5000 series, AMD has shown remarkable performance in desktop and mobile processors over the past few years. In particular, the recently released Ryzen 7945HX is the best performing high-end model among the 7000 series mobile processors used in laptops. What kind of performance will AMD’s new era mobile processors show?

Chiplet applied Zen 4 architecture
IPC improvement of 13%.

The Ryzen 9 7945HX is the world’s first x86 chip mobile processor. Unlike the ‘monolithic’ architecture which makes one big chip, the chip architecture is an approach where a number of small chips are arranged in a single package and connected to each other through performance interconnects high As it helps to overcome the high defect rate of current large chips, it is possible to produce chips with stable performance at a given level of production.

Ryzen 7945HX is installed in laptops with high-end performance. (Photo: ASUS ROG Strix ROG SCAR 17)
A logo sticker was found on laptops with the Ryzen 7000 series

The ‘Zen 4’ architecture and industry-leading 5nm process were used in the Ryzen 7045 series. According to AMD, the Zen 4 architecture was an average improvement of +13% IPC (cycles per instruction) in 22 user-intensive areas of operation. IPC is a unit of how many instructions the CPU can process in one execution cycle.

500 MHz clock improvement compared to the previous generation,
Contributes to single core performance with IPC

The Ryzen 9 7945HX has a boost clock of up to 5.4 GHz and a base clock of 2.5 GHz. Also, the highest boost clock of all Ryzen 7045 series processors is more than 5.0 GHz. Comparing the previous generation high-end mobile processor 6900HX and the new 7945HX, the clock increase between generations is around 500 MHz.

So, AMD claims a 29% increase in single core performance over the previous generation by combining clocks and IPC. The power-to-power ratio has improved thanks to the Zen 4 and TSMC 5nm process, which AMD measured as an average performance-per-watt improvement of 40% on the standard TDP points (65W / 105W / 170W).

AMD presented that it has a high power ratio compared to competitors with Zen 4 architecture.

Radeon 610M built-in graphics

Meanwhile, the graphics have a Radeon 610M (based on RDNA 2), which is a much lower performance than the Radeon 780M (based on RDNA 3, 12 cores), which has the highest performance among AMD’s built-in graphics mobile. processors.

However, it should be remembered that the processor is the HX series, which has the highest performance and consumes a lot of power among mobile processors. The name 7945HX has the following meaning.

7: 2023
9: Ryzen 9, high core count
4: Zen 4 Architecture
Top model compared to 5:0
HX: TDP 55W or higher. Highest power consumption in the lineup

Since the possibility that a notebook computer with this class of processor is not equipped with an external graphics card is infinitesimally low, it is understandable that lightweight integrated graphics have been used.

A 6nm process was used for the I/O die. It features lightweight RDNA 2 graphics, DisplayPort and HDMI support, USB Type-C with DP Alt Mode, AV1 video decoding, H.264 / H.265 video encoding / decoding, and advanced processor-derived power management IP mobile Ryzen 6000 series. included

The platform uses FL1. FL1 is a socket specially developed for the AMD Ryzen 7045HX series processor. A motherboard with this socket supports DDR5 and supports a processor with up to 16 cores and 32 processing threads (Ryzen 7945HX).

What performance will it actually show?

Now let’s see the higher theoretical performance of the AMD Ryzen 9 7945HX in action. In addition to the CPU, benchmarks that are affected by other factors such as graphics cards have been omitted. The final chart is a graph that compares Ryzen 7945HX with Intel’s equivalent mobile high-end processor, Core i9-13980HX, and the SmartPC Love benchmark scores.


base clock/boost clock


Built-in graphics/core/boost clock

entire cache memory(L2+L3)



ryzen 9 7945HX



Radeon 610M/2core/2.4GHz



5nm/Zen 4


You can check the code name (Raphael), 55W TDP, 5nm process, 16 cores and 32 threads, and AVX512 support.
Single and multi performance surpasses the previous generation 5950X high-end desktop processor.

Cinebench R23

He scored 1923 singles and 34058 multi points.


VS Intel Core i9-13980HX

The Intel Core i9-13980HX has the highest performance among Intel mobile processors with 24 cores and 32 threads and a maximum boost clock of 5.6 GHz. Comparing the overall benchmarks, it can be seen that the Ryzen 9 7945HX has an advantage in multi-performance and the Core i9-13980HX has an advantage in single performance.

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