Home > CPU Comparison > Ryzen 5 8640U or Ryzen 5 7540U: what's better?

AMD Ryzen 5 8640U vs Ryzen 5 7540U

56 out of 100
AMD Ryzen 5 8640U
VS
52 out of 100
AMD Ryzen 5 7540U
AMD Ryzen 5 8640U
AMD Ryzen 5 7540U

We compared two 6-core laptop CPUs: the 3.5 GHz AMD Ryzen 5 8640U against the 3.2 GHz Ryzen 5 7540U. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.

  1. Review
  2. Differences
  3. Performance
  4. Specs
  5. Comments

Review

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
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
๐Ÿ”Œ Usage Scenario:

Key Differences

What are the key differences between 7540U and 8640U
Advantages of AMD Ryzen 5 8640U
  • More powerful Radeon 760M integrated graphics: 2.7 vs 1.3 TFLOPS
  • Newer - released 7 months later

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Ryzen 5 8640U
vs
Ryzen 5 7540U

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Submit your benchmark results

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)
Ryzen 5 8640U +17%
10308
Ryzen 5 7540U
8822
File compression 1080 MB/sec 988.4 MB/sec
Clang compilation 71 Klines/sec 63.6 Klines/sec
HTML 5 Browser 226.5 pages/sec 172.2 pages/sec
PDF Renderer 260.8 Mpixels/sec 215.5 Mpixels/sec
Text processing 259.8 pages/sec 239.6 pages/sec
Background blur 48.1 images/sec 42.6 images/sec
Photo processing 94.5 images/sec 72.2 images/sec
Ray tracing 15.5 Mpixels/sec 13.3 Mpixels/sec
Sources: GeekBench [1], [2] โ€“ 6 & 262 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Ryzen 5 8640U +8%
19989
Ryzen 5 7540U
18526
Integer math 66.4 GOps/sec 60.1 GOps/sec
Floating point math 39.6 GOps/sec 35.9 GOps/sec
Find prime numbers 68M Primes/sec 67M Primes/sec
Random string sorting 27.7M Strings/sec 24.7M Strings/sec
Data encryption 13.7 GBytes/sec 12.5 GBytes/sec
Data compression 226.7 MBytes/sec 210.3 MBytes/sec
Physics 1015 Frames/sec 973 Frames/sec
Extended instructions 16.4B Matrices/sec 15.2B Matrices/sec
Sources: PassMark [3], [4] โ€“ 41 & 44 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 20.4 PPW 17 PPW
Geekbench 6 Multi / Watt 343.6 PPW 294.1 PPW
Passmark CPU Mark / Watt 666.3 PPW 617.5 PPW
Blender / Watt - 4.74 PPW
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Recent User Tests

The latest benchmark tests that have been submitted by users
AMD Ryzen 5 8640U
No benchmark results yet
Add
AMD Ryzen 5 7540U
DateBenchmarkResult
๐Ÿ“˜ 2025-07-16 (Afridi)Cinebench 202496 / 511
๐Ÿ“˜ 2025-04-28 (Atbara)Cinebench 202493 / 496
Add View all (2)

Specifications

Full technical specification of AMD Ryzen 5 8640U and Ryzen 5 7540U

General

Vendor Amd Amd
Released December 6, 2023 May 23, 2023
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Zen 4 (Hawk Point) Zen 4 (Phoenix)
Integrated GPU Radeon 760M Radeon 740M
Rival Equivalent - Intel Core Ultra 7 155U - Intel Core i5 1340P
Successor - - AMD Ryzen 5 230
AMD Ryzen CPU ranking (86th and 101st place)

CPU

Performance Cores
P-Cores 6 6
P-Threads 12 12
Base Frequency (P) 3.5 GHz 3.2 GHz
Turbo Boost Frequency (P) 4.9 GHz 4.9 GHz
Total
Total Cores 6 6
Total Threads 12 12
Bus Frequency 100 MHz 100 MHz
Multiplier 35x 32x
L1 Cache 64K (per core) 64K (per core)
L2 Cache 1MB (per core) 1MB (per core)
L3 Cache 16MB (shared) 16MB (shared)
Unlocked Multiplier No No

Package

Transistors 25 billions 25 billions
Fabrication Process 4 nm 4 nm
TDP (PL1) 15-30 W (configurable) 15-30 W (configurable)
Socket FP8 FP7
Peak Temperature 100ยฐC 100ยฐC
Laptop processors ranking (143rd and 182nd place)

iGPU

Integrated Graphics Radeon 760M Radeon 740M
GPU Base Clock 800 MHz 800 MHz
GPU Boost Clock 2600 MHz 2500 MHz
Shading Units 512 256
TMUs 32 16
ROPs 16 8
Execution Units 8 4
TGP 15 W 15 W
iGPU FLOPS
Ryzen 5 8640U +108%
2.7 TFLOPS
Ryzen 5 7540U
1.3 TFLOPS
More info: Radeon 740M compared to Radeon 760M

Memory Support

Memory Types - DDR5-5600
- LPDDR5x-7500		 - DDR5-5600
- LPDDR5x-7500
Max. Memory Size 256 GB 256 GB
Memory Channels 2 2
ECC Support No No

Misc

Official Site AMD Ryzen 5 8640U official page AMD Ryzen 5 7540U official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 14

Cast your vote

Choose between two processors
2 (66.7%)
1 (33.3%)
Total votes: 3

Competitors

1. AMD Ryzen 5 7540U vs AMD Ryzen 5 6600U
2. AMD Ryzen 5 7540U vs AMD Ryzen 3 7440U
3. AMD Ryzen 5 7540U vs AMD Ryzen 5 7640U
4. AMD Ryzen 5 8640U vs Intel Core i5 1335U
5. AMD Ryzen 5 8640U vs AMD Ryzen 7 8840U
6. AMD Ryzen 5 8640U vs Intel Core Ultra 5 125U
7. AMD Ryzen 5 8640U vs Intel Core Ultra 5 135U
8. AMD Ryzen 5 8640U vs AMD Ryzen 7 7735U
Compare other CPUs (460+)

Comments

So which CPU will you choose: AMD Ryzen 5 7540U or Ryzen 5 8640U?
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