TurboVS
AMD Ryzen 7 8745HX
AMD Ryzen 9 8940HX

AMD Ryzen 7 8745HX AMD Ryzen 9 8940HX

Common Features

  • ✓ Both products are designed for laptops and desktops.
  • ✓ Both products have integrated graphics.
  • ✓ Both products have a Thermal Design Power (TDP) of 55W.
  • ✓ Both products are built using a 5 nm semiconductor size.
  • ✓ Both products have a maximum CPU temperature of 100 °C.
  • ✓ Both products support PCI Express (PCIe) version 5.
  • ✓ Both products support 64-bit architecture.
  • ✓ Both products have an unlocked multiplier.
  • ✓ Both products have 1 MB of L2 cache per core.
  • ✓ Both products have 4 MB of L3 cache per core.
  • ✓ Neither product uses big.LITTLE technology.
  • ✓ Both products support a maximum RAM speed of 5200 MHz.
  • ✓ Both products support DDR5 memory.
  • ✓ Both products have two memory channels.
  • ✓ Both products support a maximum memory amount of 64GB.
  • ✓ Neither product supports ECC memory.
  • ✓ Both products support the instruction sets MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2.
  • ✓ Both products use multithreading.
  • ✓ Both products have an NX bit.

Main Differences

  • • CPU speed is 8 x 3.6 GHz on AMD Ryzen 7 8745HX and 16 x 2.4 GHz on AMD Ryzen 9 8940HX.
  • • CPU threads are 16 on AMD Ryzen 7 8745HX and 32 on AMD Ryzen 9 8940HX.
  • • Turbo clock speed is 5.1GHz on AMD Ryzen 7 8745HX and 5.3GHz on AMD Ryzen 9 8940HX.
  • • L2 cache is 8 MB on AMD Ryzen 7 8745HX and 16 MB on AMD Ryzen 9 8940HX.
  • • L3 cache is 32 MB on AMD Ryzen 7 8745HX and 64 MB on AMD Ryzen 9 8940HX.
  • • L1 cache is 512 KB on AMD Ryzen 7 8745HX and 1024 KB on AMD Ryzen 9 8940HX.
  • • Clock multiplier is 36 on AMD Ryzen 7 8745HX and 24 on AMD Ryzen 9 8940HX.
Specs Comparison
AMD Ryzen 7 8745HX

AMD Ryzen 7 8745HX

AMD Ryzen 9 8940HX

AMD Ryzen 9 8940HX

General info:
Type Laptop, Desktop Laptop, Desktop
Has integrated graphics ✓ ✓
release date April 2025 April 2025
Thermal Design Power (TDP) 55W 55W
semiconductor size 5 nm 5 nm
CPU temperature 100 °C 100 °C
PCI Express (PCIe) version 5 5
Supports 64-bit ✓ ✓

Both the AMD Ryzen 7 8745HX and AMD Ryzen 9 8940HX share the same general specifications across several key areas. Both processors are designed for laptops and desktops, with integrated graphics and support for 64-bit systems.

In terms of power, both models have the same Thermal Design Power (TDP) of 55W, which indicates their power consumption under maximum load. Additionally, both are built using the same 5 nm semiconductor size and have a maximum CPU temperature of 100°C.

Both processors also support PCI Express (PCIe) version 5, ensuring they can take full advantage of the latest high-speed data transfer capabilities. There are no differences between the two models in these general specs, with both offering identical performance characteristics in the areas mentioned.

Performance:
CPU speed 8 x 3.6 GHz 16 x 2.4 GHz
CPU threads 16 threads 32 threads
turbo clock speed 5.1GHz 5.3GHz
Has an unlocked multiplier ✓ ✓
L2 cache 8 MB 16 MB
L3 cache 32 MB 64 MB
L1 cache 512 KB 1024 KB
L2 core 1 MB/core 1 MB/core
L3 core 4 MB/core 4 MB/core
Uses big.LITTLE technology ✕ ✕
clock multiplier 36 24

The AMD Ryzen 7 8745HX and AMD Ryzen 9 8940HX differ in several performance-related aspects. The Ryzen 7 8745HX features a CPU speed of 8 x 3.6 GHz with a turbo clock speed of 5.1 GHz, while the Ryzen 9 8940HX has a lower base speed of 16 x 2.4 GHz but a slightly higher turbo clock speed of 5.3 GHz.

In terms of threads, the Ryzen 7 8745HX supports 16 threads, whereas the Ryzen 9 8940HX doubles this with 32 threads. The Ryzen 9 also has a larger cache, with 16 MB of L2 cache compared to the Ryzen 7's 8 MB, and 64 MB of L3 cache compared to 32 MB in the Ryzen 7. The L1 cache is also different, with the Ryzen 7 offering 512 KB and the Ryzen 9 providing 1024 KB.

Both processors have an unlocked multiplier for overclocking, but the clock multipliers differ: the Ryzen 7 8745HX has a clock multiplier of 36, while the Ryzen 9 8940HX uses a clock multiplier of 24. Neither processor uses big.LITTLE technology, so both rely on uniform core architecture for performance.

Integrated graphics:
GPU clock speed 400 MHz 400 MHz
GPU name Radeon 610M Radeon 610M
GPU turbo 2200 MHz 2200 MHz
GPU execution units 2 2
DirectX version DirectX 12 DirectX 12
supported displays 4 4
OpenGL version 4.6 4.6
OpenCL version 2.1 2.1
texture mapping units (TMUs) 8 8
render output units (ROPs) 4 4
shading units 128 128

Both the AMD Ryzen 7 8745HX and AMD Ryzen 9 8940HX feature the same integrated graphics specifications. Both processors are equipped with the Radeon 610M GPU, which operates at a GPU clock speed of 400 MHz and can turbo boost up to 2200 MHz. Both have 2 GPU execution units, 8 texture mapping units (TMUs), 4 render output units (ROPs), and 128 shading units.

In terms of display and software support, both processors support up to 4 displays, and they both support DirectX 12, OpenGL version 4.6, and OpenCL version 2.1.

Since the specifications match exactly between the two processors in all these areas, there are no differences to note in their integrated graphics capabilities.

Memory:
RAM speed (max) 5200 MHz 5200 MHz
DDR memory version 5 5
memory channels 2 2
maximum memory amount 64GB 64GB
Supports ECC memory ✕ ✕

The AMD Ryzen 7 8745HX and AMD Ryzen 9 8940HX have identical memory specifications. Both processors support a maximum RAM speed of 5200 MHz and use DDR5 memory. Each processor supports two memory channels and has a maximum memory capacity of 64GB.

Neither processor supports ECC memory, so neither is designed for error-correcting code memory, which can be important for certain types of workloads requiring higher reliability.

Given that all memory-related specs match exactly between the two processors, there are no differences in this area.

Features:
instruction sets MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2 MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2
uses multithreading ✓ ✓
Has NX bit ✓ ✓

The AMD Ryzen 7 8745HX and AMD Ryzen 9 8940HX share identical features in this category. Both processors support the same instruction sets, including MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2.

Both processors also support multithreading, allowing them to handle multiple threads simultaneously, and both have the NX bit, which enhances security by preventing the execution of malicious code.

Since the features are exactly the same for both processors, there are no differences to note in this area.

Comparison Summary

This is a specification comparison between AMD Ryzen 7 8745HX and AMD Ryzen 9 8940HX. Both processors are designed for laptops and desktops, feature integrated graphics, and support a 55W Thermal Design Power (TDP). Key differences include CPU speed, with 8 x 3.6 GHz on the 8745HX and 16 x 2.4 GHz on the 8940HX, and CPU threads, which are 16 on the 8745HX and 32 on the 8940HX. The turbo clock speed is 5.1 GHz for the 8745HX and 5.3 GHz for the 8940HX. Additionally, the 8745HX has 8 MB of L2 cache, while the 8940HX offers 16 MB, and the L3 cache is 32 MB on the 8745HX versus 64 MB on the 8940HX.