CPUBoss Review Our evaluation of 840 vs 860K among desktop CPUs (over 75W)

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

6.1

CPUBoss Score

Combination of all six facets

Winner
AMD Phenom II X4 840 

CPUBoss recommends the AMD Phenom II X4 840  based on its .

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VS

Differences What are the advantages of each

Front view of AMD Phenom II X4 840

Reasons to consider the
AMD Phenom II X4 840

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CPUBoss is not aware of any important advantages of the Phenom II X4 840 vs the Athlon X4 860K.

Front view of AMD Athlon X4 860K

Reasons to consider the
AMD Athlon X4 860K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking

Benchmarks Real world tests of Phenom II X4 840 vs Athlon X4 860K

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Phenom II X4 840
129,500 MB/s
Athlon X4 860K
2,290,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Phenom II X4 840  vs
Athlon X4 860K 
Clock speed 3.2 GHz 3.7 GHz
Turbo clock speed 0 GHz 4 GHz
Cores Quad core Quad core
Is unlocked No Yes

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
F16C
MMX
AVX
SSE3
SSE
BMI1
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
AMD-V
3DNow!
Supplemental SSE3
AES
TBM

power consumption

TDP 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Performance per watt 1.87 pt/W 9.83 pt/W
Typical power consumption 77.19W 77.19W

details

Phenom II X4 840  vs
Athlon X4 860K 
Architecture x86-64 x86-64
L2 cache 2 MB 4 MB
L2 cache per core 0.5 MB/core 1 MB/core
Manufacture process 45 nm 28 nm

overclocking

Overclocked clock speed 3.94 GHz 4.37 GHz
Overclocked clock speed (Water) 3.2 GHz 4.45 GHz
Overclocked clock speed (Air) 3.94 GHz 4.37 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3
AMD Phenom II X4 840
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AMD Athlon X4 860K
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