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AMD logo Athlon II X4 645
versus
AMD logo A4-4020

AMD Athlon II X4 645 logo AMD A4-4020 logo
General information Athlon II X4 645 A4-4020
Launched Q4 2010 Q3 2014
Used in Desktop Desktop
Factory AMD AMD
Socket AM3 FM2
Series Name AMD Athlon II X4 AMD A4
Core Family Name Propus Richland
Clock 3.1 GHz 3.1 % 3.2 GHz 0 %
Cores 4 0 % 2 50 %
Threads 4 0 % 2 50 %
Thermal Design Power (TDP) 95 W 0 % 65 W 31.6 %
Lithography 45 nm 0 % 32 nm 28.9 %
L1 Cache 4 × 64 kB Instruction
4 × 64 kB Data
2 × 16 kB Data
1 × 64 kB Instruction
L2 Cache 4 × 512 kB
1 × 1 MB
ECC Supported No No
Multithreading Supported No No
Performance Athlon II X4 645 A4-4020
Overall Score 35097 0 % 30090 14.3 %
Future Proof 21 % 51.2 % 43 % 0 %
Benchmark Score 1517 0 % 820 45.9 %
Single Thread Score 1255.2 0 % 1217.6 3 %
Encrypting Data 3489.3 MB/s 0 % 1873.9 MB/s 46.3 %
Compressing Data 52.6 MB/s 0 % 20.9 MB/s 60.2 %
String objects sorting 6686.1 thousand/s 0 % 2663 thousand/s 60.2 %
Prime numbers generation 9 millions/s 0 % 5 millions/s 44.7 %
Mathemathic operations (integer) 7182.8 millions/s 13.2 % 8271.5 millions/s 0 %
Mathemathic operations (float) 5238.4 millions/s 0 % 2201.8 millions/s 58 %

Comparison of average FPS

Comparison of average FPS count by settings on resolution 1920 × 1080 (FHD (1080p)) for Athlon II X4 645, A4-4020.

Average frames per second Athlon II X4 645 A4-4020
Screen resolution: 1920 × 1080 pixels   Change
Ultra settings 58.9 FPS 44.1 FPS
High settings 94.3 FPS 70.6 FPS
Medium settings 117.9 FPS 88.3 FPS
Low settings 147.4 FPS 110.3 FPS
Difference 0 % 25.1 %

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 Athlon II X4 645 A4-4020
Screen resolution: 1920 × 1080 pixels   Change
Ultra settings 112.4 FPS 103.6 FPS
High settings 179.9 FPS 165.8 FPS
Medium settings 224.8 FPS 207.2 FPS
Low settings 281.0 FPS 259.0 FPS
Difference 0 % 7.8 %
Configuration Settings
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Screen resolution Screen resolution image
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