CPU Comparison: AMD Ryzen 9 9900X vs AMD Ryzen 9 3950X

Key Findings

  • The AMD Ryzen 9 9900X leads in single-threaded performance by up to 73.4%
  • In multi-threaded workloads, the AMD Ryzen 9 9900X shows superior performance with a 41.6% advantage
  • The AMD Ryzen 9 3950X has the highest core count with 16 cores

Performance Rankings & Market Position

AMD Ryzen 9 9900X

Desktop
Release Date
Q3 2024
Market Position
120th fastest in multithreading
4890 CPUs15th fastest in single threading
4890 CPUs29th fastest in
1398 Desktop CPUs

AMD Ryzen 9 3950X

Desktop
Release Date
Q4 2019
Market Position
223rd fastest in multithreading
4890 CPUs670th fastest in single threading
4890 CPUs67th fastest in
1398 Desktop CPUs

Performance

Single-Thread Performance

9900X
4,690
3950X
2,705

Multi-Thread Performance

9900X
54,846
3950X
38,744

Specifications: AMD Ryzen 9 9900X vs AMD Ryzen 9 3950X

💻CPU Model
AMD Ryzen 9 9900X
9900X
AMD Ryzen 9 3950X
3950X
🔄Other Names
AMD Ryzen 9 9900X 12-Core Processor
9900X
AMD Ryzen 9 3950X 16-Core Processor
3950X
⚡Base Clock
4.4 GHz
9900X
3.5 GHz
3950X
🚀Turbo Clock
5.6 GHz
9900X
4.7 GHz
3950X
💻Cores/Threads
12 Threads: 24
9900X
16 Threads: 32
3950X
🔌Socket
AM5
9900X
AM4
3950X
⚡TDP
120 W
9900X
105 W
3950X
💾Cache
L1 Instruction Cache: 12 x 32 KBL1 Data Cache: 12 x 48 KBL2 Cache: 12 x 1024 KBL3 Cache: 64 MB
9900X
L1 Instruction Cache: 16 x 32 KBL1 Data Cache: 16 x 32 KBL2 Cache: 16 x 512 KBL3 Cache: 64 MB
3950X

The AMD Ryzen 9 9900X and AMD Ryzen 9 3950X compete in the Desktop segment. The AMD Ryzen 9 9900X shows superior single-thread performance, making it better for tasks like gaming and light workloads.

For multi-threaded applications, the AMD Ryzen 9 3950X takes the lead, despite having the same core count.

Power consumption differs significantly, with the AMD Ryzen 9 9900X drawing more power under load (120W vs 105W). This may impact system thermal design and power supply requirements.