Home > CPU Comparison > Core Ultra 7 155U or Ryzen 7 8840U: what's better?

Intel Core Ultra 7 155U vs AMD Ryzen 7 8840U

50 out of 100
Intel Core Ultra 7 155U
VS
57 out of 100
AMD Ryzen 7 8840U
Intel Core Ultra 7 155U
AMD Ryzen 7 8840U

We compared two laptop CPUs: the 1.7 GHz Intel Core Ultra 7 155U with 12-cores against the 3.3 GHz AMD Ryzen 7 8840U with 8-cores. 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 (3)

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.
πŸ”Œ Usage Scenario:

Key Differences

What are the key differences between 8840U and 155U
Advantages of Intel Core Ultra 7 155U
  • Has 4 more physical cores
  • More than 10Β° C higher critical temperature
Advantages of AMD Ryzen 7 8840U
  • Supports up to 256 GB DDR5-5600 RAM
  • More powerful Radeon 780M integrated graphics: 4.1 vs 2 TFLOPS
  • More modern manufacturing process – 4 versus 7 nanometers
  • Has 4 MB larger L3 cache size
  • 6% higher Turbo Boost frequency (5.1 GHz vs 4.8 GHz)

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core Ultra 7 155U
vs
Ryzen 7 8840U

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)
File compression 1000 MB/sec 983.8 MB/sec
Clang compilation 62.5 Klines/sec 88.1 Klines/sec
HTML 5 Browser 241.5 pages/sec 235.1 pages/sec
PDF Renderer 264.8 Mpixels/sec 345.7 Mpixels/sec
Text processing 233.2 pages/sec 248.3 pages/sec
Background blur 39 images/sec 48.3 images/sec
Photo processing 97.3 images/sec 103.3 images/sec
Ray tracing 13.2 Mpixels/sec 20 Mpixels/sec
Sources: GeekBench [1], [2] – 21 & 10 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Core Ultra 7 155U
16141
Ryzen 7 8840U +45%
23393
Integer math 56.8 GOps/sec 85.6 GOps/sec
Floating point math 39.6 GOps/sec 48.9 GOps/sec
Find prime numbers 65M Primes/sec 78M Primes/sec
Random string sorting 19.5M Strings/sec 32.4M Strings/sec
Data encryption 11.2 GBytes/sec 16.2 GBytes/sec
Data compression 174.6 MBytes/sec 267.5 MBytes/sec
Physics 1076 Frames/sec 1178 Frames/sec
Extended instructions 9.7B Matrices/sec 18.7B Matrices/sec
Sources: PassMark [3], [4] – 1857 & 583 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Core Ultra 7 155U
99.74
Ryzen 7 8840U +55%
154.88

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 36.6 PPW 24.2 PPW
Geekbench 6 Multi / Watt 632.4 PPW 382 PPW
Passmark CPU Mark / Watt 1076.1 PPW 779.8 PPW
Blender / Watt 6.65 PPW 5.16 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
Intel Core Ultra 7 155U
DateBenchmarkResult
πŸ“˜ 2025-03-17 (KNOTs_007)Cinebench 2024101 / 997
πŸ“˜ 2025-02-14 (hanswurst)Cinebench 202490 / 348
πŸ“˜ 2024-07-18 (Makikou)Cinebench 202494 / 333
Add View all (3)
AMD Ryzen 7 8840U
DateBenchmarkResult
πŸ“˜ 2024-04-19 (koro)Cinebench 202498 / 725
Add View all (1)

Specifications

Full technical specification of Intel Core Ultra 7 155U and AMD Ryzen 7 8840U

General

Vendor Intel Amd
Released December 14, 2023 December 6, 2023
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Meteor Lake Zen 4 (Hawk Point)
Model number 155U -
Integrated GPU Arc Graphics (4-Cores) Radeon 780M
Rival Equivalent - AMD Ryzen 7 8840U - Intel Core Ultra 7 165U
Successor - Intel Core Ultra 7 255U - AMD Ryzen 7 250
Intel CPU rating (#149th place)
AMD Ryzen CPU ranking (#81st place)

CPU

Performance Cores
P-Cores 2 8
P-Threads 4 16
Base Frequency (P) 1.7 GHz 3.3 GHz
Turbo Boost Frequency (P) 4.8 GHz 5.1 GHz
Efficient Cores
E-Cores 10 -
E-Threads 10 -
Base Frequency (E) 1.2 GHz -
Turbo Boost Frequency (E) 3.8 GHz -
Total
Total Cores 12 8
Total Threads 14 16
Bus Frequency 100 MHz 100 MHz
Multiplier 17x 33x
L1 Cache 112K (per core) 64K (per core)
L2 Cache 2MB (per core) 1MB (per core)
L3 Cache 12MB (shared) 16MB (shared)
Unlocked Multiplier No No

Package

Transistors - 25 billions
Fabrication Process 7 nm 4 nm
TDP (PL1) 12-15 W (configurable) 15-30 W (configurable)
Max. Boost TDP (PL2) 57 W -
Socket FCBGA-2049 FP8
Peak Temperature 110Β°C 100Β°C
Laptop processors ranking (197th and 129th place)

iGPU

Integrated Graphics Arc Graphics (4-Cores) Radeon 780M
GPU Base Clock 300 MHz 800 MHz
GPU Boost Clock 1950 MHz 2700 MHz
Shading Units 512 768
TMUs 32 48
ROPs 16 32
Execution Units 64 12
TGP 14 W 15 W
iGPU FLOPS
Core Ultra 7 155U
2 TFLOPS
Ryzen 7 8840U +105%
4.1 TFLOPS
More info: Radeon 780M compared to Arc iGPU (4-Cores)

Memory Support

Memory Types - LPDDR5-7467
- LPDDR5x-7467
- DDR5-5600		 - DDR5-5600
- LPDDR5x-7500
Max. Memory Size 96 GB 256 GB
Memory Channels 2 2
Max. Memory Bandwidth 89.6 GB/s -
ECC Support No No

Misc

Official Site Intel Core Ultra 7 155U official page AMD Ryzen 7 8840U official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 20

Cast your vote

Choose between two processors
10 (7.4%)
125 (92.6%)
Total votes: 135

Competitors

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

Comments

So which CPU will you choose: AMD Ryzen 7 8840U or Intel Core Ultra 7 155U?
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Avatar
LCB August 29, 2024 at 09:40 AM
I have this CPU in my ASUS UX5304. Very unimpressive battery life and the heat is crazy. I really regretted sold my MBP 14 M1 PRO to buy this piece of sh*t. Worst decision ever. Intel is really a nightmare for ultrabook.
0 Reply
Avatar
Robin Seina February 10, 2024 at 01:30 PM
Your categorization of Green RAM for Intel is incorrect, as DDR5 support is universal and, indeed, AMD actually supports marginally higher clock speeds on LPDDR5x RAM. Furthermore, you overlooked PL2 CPU limits in your description. Lastly, the assertion that Intel CPUs can run hotter is not a positive attribute either.
+23 Reply
Avatar
ksw January 3, 2024 at 01:17 PM
Don't omit intel's TDP (28W ~ 57W) compare to AMD intel's cpu is still incompetent. Who want hot palm rest and noisy laptop.
+44 Reply
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