AMD Ryzen 7 7840HS vs Ryzen 7 7745HX

We compared two 8-core laptop CPUs: the 3.8 GHz AMD Ryzen 7 7840HS against the 3.6 GHz Ryzen 7 7745HX. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.


General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
Integrated Graphics
iGPU capabilities for gaming and 3D-intensive tasks
NanoReview Final Score
Generic CPU rating

Key Differences

What are the key differences between 7745HX and 7840HS
Advantages of AMD Ryzen 7 7840HS
  • Supports up to 256 GB DDR5-5600 RAM
  • More modern manufacturing process – 4 versus 5 nanometers
Advantages of AMD Ryzen 7 7745HX
  • Has 16384 KB larger L3 cache size
  • Unlocked multiplier
  • Newer PCI Express version – 5.0
  • 19% faster in a single-core Geekbench v6 test - 2649 vs 2225 points

Test in Benchmarks

Comparing the performance of CPUs across various tasks

Cinebench R23

Reputable cross-platform benchmark for high-performance processors
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
File compression 1170 MB/sec 1410 MB/sec
Clang compilation 97.3 Klines/sec 114.7 Klines/sec
HTML 5 Browser 236.7 pages/sec 255.1 pages/sec
PDF Renderer 363 Mpixels/sec 408.8 Mpixels/sec
Text processing 242.3 pages/sec 275.9 pages/sec
Background blur 57.1 images/sec 44.9 images/sec
Photo processing 98.8 images/sec 92.1 images/sec
Ray tracing 21.5 Mpixels/sec 25.5 Mpixels/sec
Sources: GeekBench [1], [2]


Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Integer math 102.1 GOps/sec 106.9 GOps/sec
Floating point math 62.5 GOps/sec 63.6 GOps/sec
Find prime numbers 86M Primes/sec 155M Primes/sec
Random string sorting 41.6M Strings/sec 46.4M Strings/sec
Data encryption 21.5 GBytes/sec 23.5 GBytes/sec
Data compression 360.8 MBytes/sec 393.8 MBytes/sec
Physics 1350 Frames/sec 1640 Frames/sec
Extended instructions 27B Matrices/sec 29.8B Matrices/sec
Sources: PassMark [3], [4]


Full technical specification of AMD Ryzen 7 7840HS and Ryzen 7 7745HX


Vendor AMD AMD
Released January 4, 2023 January 4, 2023
Type Laptop Laptop
instruction set x86-64 x86-64
Codename Zen 4 (Phoenix) Zen 4 (Dragon Range)
Integrated GPU Radeon 780M Radeon 610M


Performance Cores
P-Cores 8 8
P-Threads 16 16
Base Frequency (P) 3.8 GHz 3.6 GHz
Turbo Boost Frequency (P) 5.1 GHz 5.1 GHz
Total Cores 8 8
Total Threads 16 16
Bus Frequency 100 MHz 100 MHz
Multiplier 38x 36x
L1 Cache 64K (per core) 64K (per core)
L2 Cache 1MB (per core) 1MB (per core)
L3 Cache 16MB (shared) 32MB (shared)
Unlocked Multiplier No Yes


Transistors 25 billions 13.1 billions
Fabrication process 4 nm 5 nm
TDP (PL1) 35-54 W (configurable) 45-75 W (configurable)
Socket FP8 FL1
Peak temperature 100°C 100°C


Integrated Graphics Radeon 780M Radeon 610M
GPU Base Clock 1500 MHz 1500 MHz
GPU Boost Clock 2700 MHz 2200 MHz
Shading Units 768 128
TMUs 48 8
ROPs 32 4
Execution Units 12 2
TGP 15 W 15 W
Max. Resolution 7680x4320 - 60 Hz -

Memory Support

Memory types - DDR5-5600
- LPDDR5x-7500
- DDR5-5200
Memory Size 256 GB 64 GB
Max. Memory Channels 2 2
ECC Support Yes No


Official site AMD Ryzen 7 7840HS official page AMD Ryzen 7 7745HX official page
PCI Express Version 4.0 5.0
PCI Express Lanes 20 28

Cast your vote

Choose between two processors
55 (68.8%)
25 (31.3%)
Total votes: 80


So which CPU will you choose: AMD Ryzen 7 7745HX or Ryzen 7 7840HS?
seunggi 31 July 2023 14:12
This average operating temperature will be much lower than 7840 hs. So 7745hx is hard to choose. Especially since it's a laptop.
0 Reply
Juci 09 July 2023 18:27
I'm not quite sure about the purpose of the 7745HX. It seems to be redundant when compared to the 7840HS, except that the latter at least possesses a highly capable integrated GPU. For some reason, the 7745HX opts for the 610m, which doesn't seem to add much value.
0 Reply