Home > CPU Comparison > Ryzen 5 8640U or Ryzen 5 7640U: what's better?

AMD Ryzen 5 8640U vs Ryzen 5 7640U

56 out of 100
AMD Ryzen 5 8640U
VS
54 out of 100
AMD Ryzen 5 7640U
AMD Ryzen 5 8640U
AMD Ryzen 5 7640U

We compared two 6-core laptop CPUs: the 3.5 GHz AMD Ryzen 5 8640U against the 3.5 GHz Ryzen 5 7640U. 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 7640U and 8640U
Advantages of AMD Ryzen 5 8640U
  • Newer - released 7 months later

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Ryzen 5 8640U
vs
Ryzen 5 7640U

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
10308
Ryzen 5 7640U +1%
10420
File compression 1080 MB/sec 1190 MB/sec
Clang compilation 71 Klines/sec 72.3 Klines/sec
HTML 5 Browser 226.5 pages/sec 219.7 pages/sec
PDF Renderer 260.8 Mpixels/sec 267.6 Mpixels/sec
Text processing 259.8 pages/sec 242.2 pages/sec
Background blur 48.1 images/sec 46.3 images/sec
Photo processing 94.5 images/sec 94.5 images/sec
Ray tracing 15.5 Mpixels/sec 15.4 Mpixels/sec
Sources: GeekBench [1], [2] โ€“ 6 & 695 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
19989
Ryzen 5 7640U +1%
20262
Integer math 66.4 GOps/sec 67.2 GOps/sec
Floating point math 39.6 GOps/sec 39.2 GOps/sec
Find prime numbers 68M Primes/sec 72M Primes/sec
Random string sorting 27.7M Strings/sec 28.2M Strings/sec
Data encryption 13.7 GBytes/sec 14.2 GBytes/sec
Data compression 226.7 MBytes/sec 228.8 MBytes/sec
Physics 1015 Frames/sec 1145 Frames/sec
Extended instructions 16.4B Matrices/sec 16.4B Matrices/sec
Sources: PassMark [3], [4] โ€“ 41 & 139 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 19.9 PPW
Geekbench 6 Multi / Watt 343.6 PPW 347.3 PPW
Passmark CPU Mark / Watt 666.3 PPW 675.4 PPW
Blender / Watt - 5.74 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 7640U
DateBenchmarkResult
๐Ÿ“˜ 2026-04-06 (GenerallyThrawn)Geekbench 6 CPU2338 / 10420
๐Ÿ“˜ 2025-08-20 (Doug Trenton)Geekbench 6 CPU2523 / 11201
Add View all (2)

Specifications

Full technical specification of AMD Ryzen 5 8640U and Ryzen 5 7640U

General

Vendor Amd Amd
Released December 6, 2023 May 3, 2023
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Zen 4 (Hawk Point) Zen 4 (Phoenix)
Integrated GPU Radeon 760M Radeon 760M
Rival Equivalent - Intel Core Ultra 7 155U - Intel Core i5 1340P
Successor - - AMD Ryzen 5 8640U
AMD Ryzen CPU ranking (86th and 92nd place)

CPU

Performance Cores
P-Cores 6 6
P-Threads 12 12
Base Frequency (P) 3.5 GHz 3.5 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 35x
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 FP8
Peak Temperature 100ยฐC 100ยฐC
Laptop processors ranking (143rd and 161st place)

iGPU

Integrated Graphics Radeon 760M Radeon 760M
GPU Base Clock 800 MHz 800 MHz
GPU Boost Clock 2600 MHz 2600 MHz
Shading Units 512 512
TMUs 32 32
ROPs 16 16
Execution Units 8 8
TGP 15 W 15 W
iGPU FLOPS
Ryzen 5 8640U
2.7 TFLOPS
Ryzen 5 7640U
2.7 TFLOPS
See: Radeon 760M benchmarks

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 7640U official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 20
Further details
Notes on Ryzen 5 7640U:
    - DDR5 memory is supported only on the FP7r2 socket, while FP7 and FP8 sockets support LPDDR5/x.
    - ECC support is available exclusively on the FP7r2 socket.

Cast your vote

Choose between two processors
7 (70%)
3 (30%)
Total votes: 10

Competitors

1. AMD Ryzen 5 8640U vs AMD Ryzen 7 7735U
2. AMD Ryzen 5 8640U vs AMD Ryzen 7 8840U
3. AMD Ryzen 5 8640U vs Intel Core Ultra 5 135U
4. AMD Ryzen 5 8640U vs Intel Core Ultra 5 125U
5. AMD Ryzen 5 8640U vs Intel Core i5 1335U
6. AMD Ryzen 5 8640U vs AMD Ryzen 5 7540U
7. AMD Ryzen 5 7640U vs AMD Ryzen 7 6800Uโ€‹
8. AMD Ryzen 5 7640U vs AMD Ryzen 7 7840U (1)
9. AMD Ryzen 5 7640U vs Intel Core i5 1340P (1)
10. AMD Ryzen 5 7640U vs Apple M1
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Comments

So which CPU will you choose: AMD Ryzen 5 7640U or Ryzen 5 8640U?
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