CPU Comparison: AMD Ryzen 7 7840S vs Intel Core Ultra 7 155U

Key Findings

The AMD Ryzen 7 7840S leads in single-threaded performance by up to 7.3%
In multi-threaded workloads, the AMD Ryzen 7 7840S shows superior performance with a 45.2% advantage
The AMD Ryzen 7 7840S has the highest core count with 8 cores

Performance Rankings & Market Position

AMD Ryzen 7 7840S

Laptop

Release Date

Q3 2023

Market Position

494th fastest in multithreading

4890 CPUs219th fastest in single threading

4890 CPUs72nd fastest in

1434 Laptop CPUs

Intel Core Ultra 7 155U

Laptop

Release Date

Q1 2024

Market Position

817th fastest in multithreading

4890 CPUs312th fastest in single threading

4890 CPUs180th fastest in

1434 Laptop CPUs

Performance

Single-Thread Performance

7840S

3,685

155U

3,435

Multi-Thread Performance

7840S

24,309

155U

16,745

Specifications: AMD Ryzen 7 7840S vs Intel Core Ultra 7 155U

💻CPU Model

AMD Ryzen 7 7840S

7840S

Intel Core Ultra 7 155U

155U

🔄Other Names

AMD Ryzen 7 7840S with Radeon 780M Graphics

7840S

Intel(R) Core(TM) Ultra 7 155U, Intel(R) CoreTM Ultra 7 155U

155U

⚡Base Clock

3.8 GHz

7840S

N/A

155U

🚀Turbo Clock

5.1 GHz

7840S

N/A

155U

💻Cores/Threads

8 Threads: 16

7840S

N/A

155U

🔌Socket

FP7 FP7r2 FP8

7840S

FCBGA2049

155U

⚡TDP

54 W

7840S

15 W

155U

💾Cache

L1 Instruction Cache: 8 x 32 KBL1 Data Cache: 8 x 32 KBL2 Cache: 8 x 1024 KBL3 Cache: 16 MB

7840S

L1 Instruction Cache: 2 x 64 KBL1 Data Cache: 2 x 48 KBL2 Cache: 5 x 2048 KBL3 Cache: 12 MB

155U

The AMD Ryzen 7 7840S and Intel Core Ultra 7 155U compete in the Laptop segment. The AMD Ryzen 7 7840S shows superior single-thread performance, making it better for tasks like gaming and light workloads.

For multi-threaded applications, the Intel Core Ultra 7 155U takes the lead, despite having the same core count.

Power consumption differs significantly, with the AMD Ryzen 7 7840S drawing more power under load (54W vs 15W). This may impact system thermal design and power supply requirements.