AMD Phenom II X4 840 vs AMD Athlon X2 7850 BE

Comparative analysis of AMD Phenom II X4 840 and AMD Athlon X2 7850 BE 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 - Bitcoin Mining (mHash/s), CompuBench 1.5 Desktop - Video Composition (Frames/s).

AMD Phenom II X4 840

AMD Athlon X2 7850 BE

Differences

Reasons to consider the AMD Phenom II X4 840

CPU is newer: launch date 1 year(s) 9 month(s) later
2 more cores, run more applications at once: 4 vs 2
Around 14% higher clock speed: 3.2 GHz vs 2.8 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 45 nm vs 65 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 81% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 2.92 vs 1.611
2.3x better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 8.884 vs 3.841
Around 92% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.159 vs 0.083
2.1x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 3.91 vs 1.833

Specifications (specs)
Launch date	January 2011 vs April 2009
Number of cores	4 vs 2
Maximum frequency	3.2 GHz vs 2.8 GHz
Manufacturing process technology	45 nm vs 65 nm
L1 cache	512 KB vs 128 KB (per core)
L2 cache	2 MB vs 512 KB (per core)
Benchmarks
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.92 vs 1.611
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	8.884 vs 3.841
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.159 vs 0.083
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	3.91 vs 1.833

Reasons to consider the AMD Athlon X2 7850 BE

Processor is unlocked, an unlocked multiplier allows for easier overclocking
4x better performance in Geekbench 4 - Single Core: 1554 vs 391
2x better performance in Geekbench 4 - Multi-Core: 2668 vs 1325

Specifications (specs)
Unlocked	Unlocked vs Locked
Benchmarks
Geekbench 4 - Single Core	1554 vs 391
Geekbench 4 - Multi-Core	2668 vs 1325

Compare benchmarks

CPU 1: AMD Phenom II X4 840
CPU 2: AMD Athlon X2 7850 BE

Geekbench 4 - Single Core

CPU 1

CPU 2

391

1554

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1325

2668

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

2.92

1.611

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

CPU 1

CPU 2

8.884

3.841

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

CPU 1

CPU 2

0.159

0.083

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

3.91

1.833

Name	AMD Phenom II X4 840	AMD Athlon X2 7850 BE
PassMark - Single thread mark	1298
PassMark - CPU mark	2410
Geekbench 4 - Single Core	391	1554
Geekbench 4 - Multi-Core	1325	2668
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.92	1.611
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	8.884	3.841
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.159	0.083
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	3.91	1.833
CompuBench 1.5 Desktop - Video Composition (Frames/s)		0.159

Compare specifications (specs)

	AMD Phenom II X4 840	AMD Athlon X2 7850 BE
Essentials
Architecture codename	Propus	Kuma
Family	AMD Phenom
Launch date	January 2011	April 2009
Launch price (MSRP)	$90
OPN PIB	HDX840WFGMBOX
OPN Tray	HDX840WFK42GM
Place in performance rating	2861	2878
Price now	$89.95
Series	AMD Phenom II X4
Value for money (0-100)	11.50
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	3.2 GHz
Die size	169 mm	285 mm
L1 cache	512 KB	128 KB (per core)
L2 cache	2 MB	512 KB (per core)
Manufacturing process technology	45 nm	65 nm
Maximum core temperature	71°C
Maximum frequency	3.2 GHz	2.8 GHz
Number of cores	4	2
Number of threads	4
Transistor count	300 million	450 million
Unlocked
L3 cache		2048 KB (shared)
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	95 Watt
Virtualization
AMD Virtualization (AMD-V™)