AMD Athlon II X4 645 vs AMD Athlon 64 X2 5600+

Comparative analysis of AMD Athlon II X4 645 and AMD Athlon 64 X2 5600+ processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s).

AMD Athlon II X4 645

AMD Athlon 64 X2 5600+

Differences

Reasons to consider the AMD Athlon II X4 645

CPU is newer: launch date 3 year(s) 9 month(s) later
2 more cores, run more applications at once: 4 vs 2
Around 11% higher clock speed: 3.1 GHz vs 2.8 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 45 nm vs 90 nm
2x more L1 cache, more data can be stored in the L1 cache for quick access later
2x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 23% better performance in PassMark - Single thread mark: 1256 vs 1019
2.6x better performance in PassMark - CPU mark: 2351 vs 903
Around 34% better performance in Geekbench 4 - Single Core: 375 vs 279
2.4x better performance in Geekbench 4 - Multi-Core: 1215 vs 497

Specifications (specs)
Launch date	September 2010 vs December 2006
Number of cores	4 vs 2
Maximum frequency	3.1 GHz vs 2.8 GHz
Manufacturing process technology	45 nm vs 90 nm
L1 cache	128 KB (per core) vs 256 KB
L2 cache	512 KB (per core) vs 1024 KB
Benchmarks
PassMark - Single thread mark	1256 vs 1019
PassMark - CPU mark	2351 vs 903
Geekbench 4 - Single Core	375 vs 279
Geekbench 4 - Multi-Core	1215 vs 497

Reasons to consider the AMD Athlon 64 X2 5600+

Around 7% lower typical power consumption: 89 Watt vs 95 Watt

Thermal Design Power (TDP)	89 Watt vs 95 Watt

Compare benchmarks

CPU 1: AMD Athlon II X4 645
CPU 2: AMD Athlon 64 X2 5600+

PassMark - Single thread mark

CPU 1

CPU 2

1256

1019

PassMark - CPU mark

CPU 1

CPU 2

2351

903

Geekbench 4 - Single Core

CPU 1

CPU 2

375

279

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1215

497

Name	AMD Athlon II X4 645	AMD Athlon 64 X2 5600+
PassMark - Single thread mark	1256	1019
PassMark - CPU mark	2351	903
Geekbench 4 - Single Core	375	279
Geekbench 4 - Multi-Core	1215	497
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.103
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	9.496

Compare specifications (specs)

	AMD Athlon II X4 645	AMD Athlon 64 X2 5600+
Essentials
Architecture codename	Propus	Windsor
Launch date	September 2010	December 2006
Launch price (MSRP)	$80
Place in performance rating	2763	2755
Price now	$49.99	$149.95
Value for money (0-100)	20.48	2.91
Vertical segment	Desktop	Desktop
Performance
64 bit support
Die size	169 mm	220 mm
L1 cache	128 KB (per core)	256 KB
L2 cache	512 KB (per core)	1024 KB
Manufacturing process technology	45 nm	90 nm
Maximum frequency	3.1 GHz	2.8 GHz
Number of cores	4	2
Transistor count	300 million	227 million
Memory
Supported memory types	DDR3
Compatibility
Max number of CPUs in a configuration	1	1
Sockets supported	AM3	AM2
Thermal Design Power (TDP)	95 Watt	89 Watt