AMD Phenom II X2 B55 vs AMD Phenom II X4 920

Comparative analysis of AMD Phenom II X2 B55 and AMD Phenom II X4 920 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).

AMD Phenom II X2 B55

AMD Phenom II X4 920

Differences

Reasons to consider the AMD Phenom II X2 B55

CPU is newer: launch date 8 month(s) later
Around 7% higher clock speed: 3 GHz vs 2.8 GHz
Around 56% lower typical power consumption: 80 Watt vs 125 Watt
Around 6% better performance in PassMark - Single thread mark: 1205 vs 1133
Around 11% better performance in Geekbench 4 - Single Core: 1851 vs 1674
Around 4% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 3.707 vs 3.558
Around 37% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 10.41 vs 7.624
Around 12% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.191 vs 0.17
Around 1% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 3.556 vs 3.506

Specifications (specs)
Launch date	October 2009 vs January 2009
Maximum frequency	3 GHz vs 2.8 GHz
Thermal Design Power (TDP)	80 Watt vs 125 Watt
Benchmarks
PassMark - Single thread mark	1205 vs 1133
Geekbench 4 - Single Core	1851 vs 1674
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	3.707 vs 3.558
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	10.41 vs 7.624
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.191 vs 0.17
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	3.556 vs 3.506

Reasons to consider the AMD Phenom II X4 920

2 more cores, run more applications at once: 4 vs 2
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 81% better performance in PassMark - CPU mark: 2181 vs 1204
Around 64% better performance in Geekbench 4 - Multi-Core: 4682 vs 2854
Around 1% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 0.322 vs 0.318

Specifications (specs)
Number of cores	4 vs 2
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	2181 vs 1204
Geekbench 4 - Multi-Core	4682 vs 2854
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.322 vs 0.318

Compare benchmarks

CPU 1: AMD Phenom II X2 B55
CPU 2: AMD Phenom II X4 920

PassMark - Single thread mark

CPU 1

CPU 2

1205

1133

PassMark - CPU mark

CPU 1

CPU 2

1204

2181

Geekbench 4 - Single Core

CPU 1

CPU 2

1851

1674

Geekbench 4 - Multi-Core

CPU 1

CPU 2

2854

4682

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

3.707

3.558

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

CPU 1

CPU 2

10.41

7.624

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

CPU 1

CPU 2

0.191

0.17

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

0.318

0.322

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

3.556

3.506

Name	AMD Phenom II X2 B55	AMD Phenom II X4 920
PassMark - Single thread mark	1205	1133
PassMark - CPU mark	1204	2181
Geekbench 4 - Single Core	1851	1674
Geekbench 4 - Multi-Core	2854	4682
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	3.707	3.558
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	10.41	7.624
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.191	0.17
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.318	0.322
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	3.556	3.506

Compare specifications (specs)

	AMD Phenom II X2 B55	AMD Phenom II X4 920
Essentials
Architecture codename	Callisto	Deneb
Launch date	October 2009	January 2009
Launch price (MSRP)	$48	$90
Place in performance rating	2507	2508
Price now	$48	$66.99
Value for money (0-100)	11.85	14.95
Vertical segment	Desktop	Desktop
Performance
64 bit support
Die size	258 mm	258 mm
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	512 KB (per core)	512 KB (per core)
L3 cache	6144 KB (shared)	6144 KB (shared)
Manufacturing process technology	45 nm	45 nm
Maximum frequency	3 GHz	2.8 GHz
Number of cores	2	4
Transistor count	758 million	758 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)	80 Watt	125 Watt