AMD Athlon II X3 445 vs AMD Athlon II X4 640

Comparative analysis of AMD Athlon II X3 445 and AMD Athlon II X4 640 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), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), 3DMark Fire Strike - Physics Score.

AMD Athlon II X3 445

AMD Athlon II X4 640

Differences

Reasons to consider the AMD Athlon II X3 445

Around 3% higher clock speed: 3.1 GHz vs 3 GHz
Around 4% better performance in PassMark - Single thread mark: 1264 vs 1212
Around 7% better performance in Geekbench 4 - Single Core: 383 vs 358

Specifications (specs)
Maximum frequency	3.1 GHz vs 3 GHz
Benchmarks
PassMark - Single thread mark	1264 vs 1212
Geekbench 4 - Single Core	383 vs 358

Reasons to consider the AMD Athlon II X4 640

1 more cores, run more applications at once: 4 vs 3
Around 33% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 33% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 24% better performance in PassMark - CPU mark: 2262 vs 1820
Around 15% better performance in Geekbench 4 - Multi-Core: 1191 vs 1036
Around 59% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 2.776 vs 1.743
Around 70% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 7.618 vs 4.487
2x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.17 vs 0.083
Around 28% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 4.052 vs 3.169

Specifications (specs)
Number of cores	4 vs 3
L1 cache	128 KB (per core) vs 128 KB (per core)
L2 cache	512 KB (per core) vs 512 KB (per core)
Benchmarks
PassMark - CPU mark	2262 vs 1820
Geekbench 4 - Multi-Core	1191 vs 1036
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.776 vs 1.743
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	7.618 vs 4.487
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.17 vs 0.083
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.052 vs 3.169

Compare benchmarks

CPU 1: AMD Athlon II X3 445
CPU 2: AMD Athlon II X4 640

PassMark - Single thread mark

CPU 1

CPU 2

1264

1212

PassMark - CPU mark

CPU 1

CPU 2

1820

2262

Geekbench 4 - Single Core

CPU 1

CPU 2

383

358

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1036

1191

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

1.743

2.776

CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)

CPU 1

CPU 2

4.487

7.618

CompuBench 1.5 Desktop - T-Rex (Frames/s)

CPU 1

CPU 2

0.083

0.17

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

3.169

4.052

Name	AMD Athlon II X3 445	AMD Athlon II X4 640
PassMark - Single thread mark	1264	1212
PassMark - CPU mark	1820	2262
Geekbench 4 - Single Core	383	358
Geekbench 4 - Multi-Core	1036	1191
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	1.743	2.776
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	4.487	7.618
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.083	0.17
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.259
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	3.169	4.052
3DMark Fire Strike - Physics Score		0

Compare specifications (specs)

	AMD Athlon II X3 445	AMD Athlon II X4 640
Essentials
Architecture codename	Rana	Propus
Launch date	May 2010	May 2010
Launch price (MSRP)	$91	$80
Place in performance rating	3068	3034
Price now	$91	$239.95
Value for money (0-100)	8.33	4.07
Vertical segment	Desktop	Desktop
Performance
64 bit support
Die size	169 mm	169 mm
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	512 KB (per core)	512 KB (per core)
Manufacturing process technology	45 nm	45 nm
Maximum frequency	3.1 GHz	3 GHz
Number of cores	3	4
Transistor count	300 million	300 million
Memory
Supported memory types	DDR3	DDR3
Compatibility
Max number of CPUs in a configuration	1	1
Sockets supported	AM3	AM3
Thermal Design Power (TDP)	95 Watt	95 Watt