Home > CPU Comparison > Ryzen 7 8840U or Ryzen 7 7840U: what's better?

AMD Ryzen 7 8840U vs Ryzen 7 7840U

57 out of 100
AMD Ryzen 7 8840U
VS
57 out of 100
AMD Ryzen 7 7840U
AMD Ryzen 7 8840U
AMD Ryzen 7 7840U

We compared two 8-core laptop CPUs: the 3.3 GHz AMD Ryzen 7 8840U against the 3.3 GHz Ryzen 7 7840U. 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 (4)

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 7840U and 8840U
Advantages of AMD Ryzen 7 8840U
  • Newer - released 7 months later

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Ryzen 7 8840U
vs
Ryzen 7 7840U

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 7 8840U +7%
11459
Ryzen 7 7840U
10726
File compression 983.8 MB/sec 1110 MB/sec
Clang compilation 88.1 Klines/sec 82.2 Klines/sec
HTML 5 Browser 235.1 pages/sec 210.4 pages/sec
PDF Renderer 345.7 Mpixels/sec 298.4 Mpixels/sec
Text processing 248.3 pages/sec 250.6 pages/sec
Background blur 48.3 images/sec 47.5 images/sec
Photo processing 103.3 images/sec 90.5 images/sec
Ray tracing 20 Mpixels/sec 17.5 Mpixels/sec
Sources: GeekBench [1], [2] โ€“ 10 & 1087 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Ryzen 7 8840U
23393
Ryzen 7 7840U +4%
24383
Integer math 85.6 GOps/sec 89.3 GOps/sec
Floating point math 48.9 GOps/sec 50.9 GOps/sec
Find prime numbers 78M Primes/sec 79M Primes/sec
Random string sorting 32.4M Strings/sec 33.5M Strings/sec
Data encryption 16.2 GBytes/sec 17.4 GBytes/sec
Data compression 267.5 MBytes/sec 282.7 MBytes/sec
Physics 1178 Frames/sec 1245 Frames/sec
Extended instructions 18.7B Matrices/sec 20B Matrices/sec
Sources: PassMark [3], [4] โ€“ 583 & 551 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Ryzen 7 8840U
154.88
Ryzen 7 7840U +29%
199.52

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 24.2 PPW 24.3 PPW
Geekbench 6 Multi / Watt 382 PPW 357.5 PPW
Passmark CPU Mark / Watt 779.8 PPW 812.8 PPW
Blender / Watt 5.16 PPW 6.65 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 7 8840U
DateBenchmarkResult
๐Ÿ“˜ 2024-04-19 (koro)Cinebench 202498 / 725
Add View all (1)
AMD Ryzen 7 7840U
DateBenchmarkResult
๐Ÿ“˜ 2025-08-03 (Aaron)Cinebench 202493 / 764
๐Ÿ“˜ 2025-03-15 (JP)Cinebench 202496 / 728
Add View all (2)

Specifications

Full technical specification of AMD Ryzen 7 8840U and Ryzen 7 7840U

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 780M Radeon 780M
Rival Equivalent - Intel Core Ultra 7 165U - Intel Core i7 1370P
Successor - AMD Ryzen 7 250 - AMD Ryzen 7 250
AMD Ryzen CPU ranking (81st and 82nd place)

CPU

Performance Cores
P-Cores 8 8
P-Threads 16 16
Base Frequency (P) 3.3 GHz 3.3 GHz
Turbo Boost Frequency (P) 5.1 GHz 5.1 GHz
Total
Total Cores 8 8
Total Threads 16 16
Bus Frequency 100 MHz 100 MHz
Multiplier 33x 33x
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 (129th and 130th place)

iGPU

Integrated Graphics Radeon 780M Radeon 780M
GPU Base Clock 800 MHz 800 MHz
GPU Boost Clock 2700 MHz 2700 MHz
Shading Units 768 768
TMUs 48 48
ROPs 32 32
Execution Units 12 12
TGP 15 W 15 W
iGPU FLOPS
Ryzen 7 8840U
4.1 TFLOPS
Ryzen 7 7840U
4.1 TFLOPS
See: Radeon 780M 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 7 8840U official page AMD Ryzen 7 7840U official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 20

Cast your vote

Choose between two processors
65 (25.6%)
189 (74.4%)
Total votes: 254

Competitors

1. AMD Ryzen 7 8840U vs Intel Core Ultra 7 155H
2. AMD Ryzen 7 8840U vs Intel Core Ultra 7 165U
3. AMD Ryzen 7 8840U vs Intel Core Ultra 7 155U (3)
4. AMD Ryzen 7 8840U vs Intel Core i7 1355U
5. AMD Ryzen 7 8840U vs AMD Ryzen 5 8540U
6. AMD Ryzen 7 8840U vs AMD Ryzen 5 8640U
7. AMD Ryzen 7 8840U vs Intel Core i7 1360P
8. AMD Ryzen 7 7840U vs Intel Core i7 1355U
9. AMD Ryzen 7 7840U vs AMD Ryzen Z1 Extreme
10. AMD Ryzen 7 7840U vs Intel Core Ultra 7 155H (3)
Compare other CPUs (460+)

Comments

So which CPU will you choose: AMD Ryzen 7 7840U or Ryzen 7 8840U?
๐ŸŒ Register your profile and become part of NanoReview community!
Avatar
ggg April 5, 2024 at 01:46 PM
The 8840U is simply a rebranded 7840U. The hardware is the SAME for both models. There is no difference in hardware or frequencies. The values between the two should be identical.
+45 Reply
Avatar
666 April 12, 2024 at 08:35 AM
However, the 8840U has a higher performance-per-watt ratio than the 7840U.
+44 Reply
Avatar
aer April 12, 2024 at 12:30 PM
Wrong, the NPU differs.
+52 Reply
Avatar
Tio July 22, 2024 at 12:18 PM
It is said that 8840U is not even able to achieve its base frequency 3.3ghz. max out with performance mode on is 3.1ghz in quick load(2-10 secs) tests.
+17 Reply
Englishะ ัƒััะบะธะน