AMD A8-3870K vs AMD Phenom II X4 920

Comparative analysis of AMD A8-3870K and AMD Phenom II X4 920 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), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps).

AMD A8-3870K

AMD Phenom II X4 920

Differences

Reasons to consider the AMD A8-3870K

CPU is newer: launch date 2 year(s) 10 month(s) later
Processor is unlocked, an unlocked multiplier allows for easier overclocking
Around 7% higher clock speed: 3 GHz vs 2.8 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 32 nm vs 45 nm
2x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 25% lower typical power consumption: 100 Watt vs 125 Watt
Around 7% better performance in PassMark - Single thread mark: 1209 vs 1130
Around 8% better performance in PassMark - CPU mark: 2323 vs 2156
Around 24% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 9.482 vs 7.624
Around 12% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.191 vs 0.17
Around 24% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 0.4 vs 0.322

Specifications (specs)
Launch date	December 2011 vs January 2009
Unlocked	Unlocked vs Locked
Maximum frequency	3 GHz vs 2.8 GHz
Manufacturing process technology	32 nm vs 45 nm
L2 cache	1024 KB (per core) vs 512 KB (per core)
Thermal Design Power (TDP)	100 Watt vs 125 Watt
Benchmarks
PassMark - Single thread mark	1209 vs 1130
PassMark - CPU mark	2323 vs 2156
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	9.482 vs 7.624
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.191 vs 0.17
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.4 vs 0.322

Reasons to consider the AMD Phenom II X4 920

4.5x better performance in Geekbench 4 - Single Core: 1674 vs 373
4x better performance in Geekbench 4 - Multi-Core: 4682 vs 1172
Around 22% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 3.558 vs 2.914
Around 5% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 3.506 vs 3.344

Benchmarks
Geekbench 4 - Single Core	1674 vs 373
Geekbench 4 - Multi-Core	4682 vs 1172
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	3.558 vs 2.914
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	3.506 vs 3.344

Compare benchmarks

CPU 1: AMD A8-3870K
CPU 2: AMD Phenom II X4 920

PassMark - Single thread mark

CPU 1

CPU 2

1209

1130

PassMark - CPU mark

CPU 1

CPU 2

2323

2156

Geekbench 4 - Single Core

CPU 1

CPU 2

373

1674

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1172

4682

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

2.914

3.558

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

CPU 1

CPU 2

9.482

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

0.4

0.322

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

3.344

3.506

Name	AMD A8-3870K	AMD Phenom II X4 920
PassMark - Single thread mark	1209	1130
PassMark - CPU mark	2323	2156
Geekbench 4 - Single Core	373	1674
Geekbench 4 - Multi-Core	1172	4682
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.914	3.558
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	9.482	7.624
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.191	0.17
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.4	0.322
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	3.344	3.506
GFXBench 4.0 - Car Chase Offscreen (Frames)	762
GFXBench 4.0 - Manhattan (Frames)	1721
GFXBench 4.0 - Car Chase Offscreen (Fps)	762
GFXBench 4.0 - Manhattan (Fps)	1721

Compare specifications (specs)

	AMD A8-3870K	AMD Phenom II X4 920
Essentials
Architecture codename	Llano	Deneb
Launch date	December 2011	January 2009
Place in performance rating	2549	2524
Vertical segment	Desktop	Desktop
Launch price (MSRP)		$90
Price now		$66.99
Value for money (0-100)		14.95
Performance
64 bit support
Die size	228 mm	258 mm
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	1024 KB (per core)	512 KB (per core)
Manufacturing process technology	32 nm	45 nm
Maximum frequency	3 GHz	2.8 GHz
Number of cores	4	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	AM3
Thermal Design Power (TDP)	100 Watt	125 Watt
Virtualization
AMD Virtualization (AMD-V™)