CPUBoss Review Our evaluation of 6600K vs 8431 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

8.1

CPUBoss Score

Combination of all six facets

Winner
AMD Opteron 8431 

CPUBoss recommends the AMD Opteron 8431  based on its power consumption.

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VS

Differences What are the advantages of each

Front view of Intel Core i5 6600K

Reasons to consider the
Intel Core i5 6600K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much newer manufacturing process 14 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 3.5 GHz vs 2.4 GHz More than 45% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better geekbench 3 single core score 3,134 vs 1,289 Around 2.5x better geekbench 3 single core score
Much better overclocked clock speed (Air) 4.54 GHz vs 2.4 GHz Around 90% better overclocked clock speed (Air)
Newer Jul, 2015 vs Jun, 2009 Release date over 6 years later
More l3 cache per core 1.5 MB/core vs 1 MB/core 50% more l3 cache per core
Higher Maximum operating temperature 64 °C vs 55 °C More than 15% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.57 GHz vs 2.4 GHz More than 90% better overclocked clock speed (Water)
Front view of AMD Opteron 8431

Reasons to consider the
AMD Opteron 8431

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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
Much better geekbench 3 Multi-Core score 22,832 vs 5,051 More than 4.5x better geekbench 3 Multi-Core score
Lower typical power consumption 60.94W vs 73.94W Around 20% lower typical power consumption
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
More threads 6 vs 4 2 more threads
Better performance per watt 3.44 pt/W vs 2.45 pt/W More than 40% better performance per watt
Lower annual home energy cost 18.07 $/year vs 21.92 $/year Around 20% lower annual home energy cost
Lower annual commercial energy cost 65.7 $/year vs 79.72 $/year Around 20% lower annual commercial energy cost

Benchmarks Real world tests of Core i5 6600K vs Opteron 8431

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 i5 6600K
209.7 MB/s
Opteron 8431
102.65 MB/s

Specifications Full list of technical specs

summary

Core i5 6600K  vs
Opteron 8431 
Clock speed 3.5 GHz 2.4 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 75W
Annual home energy cost 21.92 $/year 18.07 $/year
Annual commercial energy cost 79.72 $/year 65.7 $/year
Performance per watt 2.45 pt/W 3.44 pt/W
Typical power consumption 73.94W 60.94W

details

Core i5 6600K  vs
Opteron 8431 
Threads 4 6
L2 cache 1 MB 3 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 6 MB 6 MB
L3 cache per core 1.5 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 4.54 GHz 2.4 GHz
Overclocked clock speed (Water) 4.57 GHz 2.4 GHz
Overclocked clock speed (Air) 4.54 GHz 2.4 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 i5 6600K
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AMD Opteron 8431
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