AMD Athlon II X4 641 vs AMD Phenom II X2 B55

Comparative analysis of AMD Athlon II X4 641 and AMD Phenom II X2 B55 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Virtualization. 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).

AMD Athlon II X4 641

AMD Phenom II X2 B55

Differences

Reasons to consider the AMD Athlon II X4 641

CPU is newer: launch date 2 year(s) 4 month(s) later
2 more cores, run more applications at once: 4 vs 2
A newer manufacturing process allows for a more powerful, yet cooler running processor: 32 nm vs 45 nm
2x more L1 cache, more data can be stored in the L1 cache for quick access later
4x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 96% better performance in PassMark - CPU mark: 2313 vs 1183

Specifications (specs)
Launch date	February 2012 vs October 2009
Number of cores	4 vs 2
Manufacturing process technology	32 nm vs 45 nm
L1 cache	512 KB vs 128 KB (per core)
L2 cache	4 MB vs 512 KB (per core)
Benchmarks
PassMark - CPU mark	2313 vs 1183

Reasons to consider the AMD Phenom II X2 B55

Around 7% higher clock speed: 3 GHz vs 2.8 GHz
Around 25% lower typical power consumption: 80 Watt vs 100 Watt
Around 1% better performance in PassMark - Single thread mark: 1201 vs 1189
5x better performance in Geekbench 4 - Single Core: 1851 vs 369
2.3x better performance in Geekbench 4 - Multi-Core: 2854 vs 1247

Specifications (specs)
Maximum frequency	3 GHz vs 2.8 GHz
Thermal Design Power (TDP)	80 Watt vs 100 Watt
Benchmarks
PassMark - Single thread mark	1201 vs 1189
Geekbench 4 - Single Core	1851 vs 369
Geekbench 4 - Multi-Core	2854 vs 1247

Compare benchmarks

CPU 1: AMD Athlon II X4 641
CPU 2: AMD Phenom II X2 B55

PassMark - Single thread mark

CPU 1

CPU 2

1189

1201

PassMark - CPU mark

CPU 1

CPU 2

2313

1183

Geekbench 4 - Single Core

CPU 1

CPU 2

369

1851

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1247

2854

Name	AMD Athlon II X4 641	AMD Phenom II X2 B55
PassMark - Single thread mark	1189	1201
PassMark - CPU mark	2313	1183
Geekbench 4 - Single Core	369	1851
Geekbench 4 - Multi-Core	1247	2854
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		3.707
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		10.41
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.191
CompuBench 1.5 Desktop - Video Composition (Frames/s)		0.318
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		3.556

Compare specifications (specs)

	AMD Athlon II X4 641	AMD Phenom II X2 B55
Essentials
Architecture codename	Llano	Callisto
Family	AMD Athlon Processors
Launch date	February 2012	October 2009
OPN PIB	AD641XWNGXBOX
OPN Tray	AD641XWNZ43GX
Place in performance rating	2473	2495
Price now	$91.50	$48
Series	AMD Athlon II X4
Value for money (0-100)	10.77	11.85
Vertical segment	Desktop	Desktop
Launch price (MSRP)		$48
Performance
64 bit support
Base frequency	2.8 GHz
Die size	228 mm	258 mm
L1 cache	512 KB	128 KB (per core)
L2 cache	4 MB	512 KB (per core)
Manufacturing process technology	32 nm	45 nm
Maximum core temperature	70.10°C
Maximum frequency	2.8 GHz	3 GHz
Number of cores	4	2
Number of threads	4
Transistor count	1178 million	758 million
Unlocked
L3 cache		6144 KB (shared)
Memory
Supported memory types	DDR3	DDR3
Compatibility
Max number of CPUs in a configuration	1	1
Sockets supported	FM1 uPGA	AM3
Thermal Design Power (TDP)	100 Watt	80 Watt
Virtualization
AMD Virtualization (AMD-V™)