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AMD logo Ryzen 9 3900
versus
AMD logo Athlon II X4 645

AMD Ryzen 9 3900 logo AMD Athlon II X4 645 logo
General information Ryzen 9 3900 Athlon II X4 645
Launched Q4 2019 Q4 2010
Used in Desktop Desktop
Factory AMD AMD
Socket AM4 AM3
Series Name AMD Ryzen 9 AMD Athlon II X4
Core Family Name Matisse Propus
Clock 3.1 GHz 0 % 3.1 GHz 0 %
Cores 12 0 % 4 66.7 %
Threads 24 0 % 4 83.3 %
Thermal Design Power (TDP) 65 W 31.6 % 95 W 0 %
Lithography 7 nm 84.4 % 45 nm 0 %
L1 Cache 12 × 32 kB Instruction
12 × 32 kB Data
4 × 64 kB Instruction
4 × 64 kB Data
L2 Cache 12 × 512 kB
4 × 512 kB
ECC Supported No No
Multithreading Supported Yes No
Performance Ryzen 9 3900 Athlon II X4 645
Overall Score 66816 0 % 35097 47.5 %
Future Proof 73 % 0 % 21 % 71.2 %
Benchmark Score 19930 0 % 1517 92.4 %
Single Thread Score 2592.8 0 % 1246.4 51.9 %
Encrypting Data 26580.5 MB/s 0 % 3447.6 MB/s 87 %
Compressing Data 409.4 MB/s 0 % 52.6 MB/s 87.1 %
String objects sorting 45605 thousand/s 0 % 6726.5 thousand/s 85.3 %
Prime numbers generation 204.4 millions/s 0 % 9 millions/s 95.6 %
Mathemathic operations (integer) 97604.6 millions/s 0 % 7204.5 millions/s 92.6 %
Mathemathic operations (float) 57465.5 millions/s 0 % 5228 millions/s 90.9 %

Comparison of average FPS

Comparison of average FPS count by settings on resolution 1920 × 1080 (FHD (1080p)) for Ryzen 9 3900, Athlon II X4 645.

Average frames per second Ryzen 9 3900 Athlon II X4 645
Screen resolution: 1920 × 1080 pixels   Change
Ultra settings 153.2 FPS 59.0 FPS
High settings 245.1 FPS 94.4 FPS
Medium settings 306.4 FPS 118.0 FPS
Low settings 382.9 FPS 147.5 FPS
Difference 0 % 61.5 %

Grand Theft Auto V Frames per second

Comparison of FPS count by settings on resolution 1920 × 1080 (FHD (1080p)) in game 1920 × 1080 (FHD (1080p)) for Grand Theft Auto V.

Grand Theft Auto V Ryzen 9 3900 Athlon II X4 645
Screen resolution: 1920 × 1080 pixels   Change
Ultra settings 168.3 FPS 112.4 FPS
High settings 269.2 FPS 179.9 FPS
Medium settings 336.5 FPS 224.8 FPS
Low settings 420.7 FPS 281.1 FPS
Difference 0 % 33.2 %
Configuration Settings
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