CPUBoss Review Our evaluation of 6700K vs 8439 SE among all CPUs

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

Sky Diver and Cloud Gate

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?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

8.2

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 6700K 

CPUBoss recommends the Intel Core i7 6700K  based on its performance and single-core performance.

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VS

Differences What are the advantages of each

Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Significantly higher clock speed 4 GHz vs 2.8 GHz Around 45% higher clock speed
Much newer manufacturing process 14 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better PassMark (Single core) score 2,349 vs 908 More than 2.5x better PassMark (Single core) score
Significantly better PassMark score 11,109 vs 3,813 Around 3x better PassMark score
Much better overclocked clock speed (Air) 4.61 GHz vs 3.1 GHz Around 50% better overclocked clock speed (Air)
Significantly more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Newer Jul, 2015 vs Jul, 2009 Release date over 6 years later
Slightly more l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Lower typical power consumption 73.94W vs 85.31W Around 15% lower typical power consumption
Higher Maximum operating temperature 64 °C vs 55 °C More than 15% higher Maximum operating temperature
More threads 8 vs 6 2 more threads
Much better overclocked clock speed (Water) 4.77 GHz vs 2.8 GHz More than 70% better overclocked clock speed (Water)
Better performance per watt 3.49 pt/W vs 2.23 pt/W More than 55% better performance per watt
Lower annual commercial energy cost 79.72 $/year vs 91.98 $/year Around 15% lower annual commercial energy cost
Lower annual home energy cost 21.92 $/year vs 25.29 $/year Around 15% lower annual home energy cost
Front view of AMD Opteron 8439 SE

Reasons to consider the
AMD Opteron 8439 SE

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Much more l2 cache 3 MB vs 1 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
More cores 6 vs 4 2 more cores; run more applications at once
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core

Benchmarks Real world tests of Core i7 6700K vs Opteron 8439 SE

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

Core i7 6700K
6,010 MB/s
Opteron 8439 SE
111,800 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6700K  vs
Opteron 8439 SE 
Clock speed 4 GHz 2.8 GHz
Cores Quad core Hexa core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 91W 105W
Annual home energy cost 21.92 $/year 25.29 $/year
Annual commercial energy cost 79.72 $/year 91.98 $/year
Performance per watt 3.49 pt/W 2.23 pt/W
Typical power consumption 73.94W 85.31W

details

Core i7 6700K  vs
Opteron 8439 SE 
Threads 8 6
L2 cache 1 MB 3 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 14 nm 45 nm
Max CPUs 1 8
Operating temperature Unknown - 64°C 0 - 55°C

overclocking

Overclocked clock speed 4.61 GHz 3.1 GHz
Overclocked clock speed (Water) 4.77 GHz 2.8 GHz
Overclocked clock speed (Air) 4.61 GHz 3.1 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 530 N/A
Number of displays supported 3 N/A
GPU clock speed 350 MHz N/A
Turbo clock speed 1,150 MHz N/A

bus

Architecture FSB HyperTransport 3.0
Intel Core i7 6700K
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AMD Opteron 8439 SE
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