CPU Comparison: AMD Ryzen 7 7840S vs AMD Ryzen 5 3450U

Key Findings

The AMD Ryzen 7 7840S leads in single-threaded performance by up to 93.0%
In multi-threaded workloads, the AMD Ryzen 7 7840S shows superior performance with a 260.8% 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

AMD Ryzen 5 3450U

Laptop

Release Date

Q4 2020

Market Position

1565th fastest in multithreading

4890 CPUs1629th fastest in single threading

4890 CPUs371st fastest in

1434 Laptop CPUs

Performance

Single-Thread Performance

7840S

3,685

3450U

1,909

Multi-Thread Performance

7840S

24,309

3450U

6,737

Specifications: AMD Ryzen 7 7840S vs AMD Ryzen 5 3450U

💻CPU Model

AMD Ryzen 7 7840S

7840S

AMD Ryzen 5 3450U

3450U

🔄Other Names

AMD Ryzen 7 7840S with Radeon 780M Graphics

7840S

AMD Ryzen 5 3450U with Radeon Vega Mobile Gfx

3450U

⚡Base Clock

3.8 GHz

7840S

2.1 GHz

3450U

🚀Turbo Clock

5.1 GHz

7840S

3.5 GHz

3450U

💻Cores/Threads

8 Threads: 16

7840S

4 Threads: 8

3450U

🔌Socket

FP7 FP7r2 FP8

7840S

FP5

3450U

⚡TDP

54 W

7840S

15 W

3450U

💾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: 4 x 64 KBL1 Data Cache: 4 x 32 KBL2 Cache: 4 x 512 KBL3 Cache: 4 MB

3450U

The AMD Ryzen 7 7840S and AMD Ryzen 5 3450U 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 AMD Ryzen 5 3450U 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.