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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
Significantly higher turbo clock speed 4.2 GHz vs 3.3 GHz More than 25% higher turbo clock speed
Much better geekbench 3 Multi-Core score 17,583 vs 4,481 Around 4x better geekbench 3 Multi-Core score
Much newer manufacturing process 14 nm vs 32 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 geekbench 3 AES single core score 6,010 MB/s vs 1,830 MB/s More than 3.2x better geekbench 3 AES single core score
Significantly lower typical power consumption 73.94W vs 93.44W More than 20% lower typical power consumption
Significantly better overclocked clock speed (Air) 4.61 GHz vs 3.3 GHz Around 40% better overclocked clock speed (Air)
Better performance per watt 3.49 pt/W vs 0.77 pt/W More than 4.5x better performance per watt
Newer Jul, 2015 vs Nov, 2012 Release date over 2 years later
Much better overclocked clock speed (Water) 4.77 GHz vs 3.3 GHz Around 45% better overclocked clock speed (Water)
Significantly lower annual home energy cost 21.92 $/year vs 27.7 $/year More than 20% lower annual home energy cost
Significantly lower annual commercial energy cost 79.72 $/year vs 100.74 $/year More than 20% lower annual commercial energy cost
Front view of AMD Opteron 6320

Reasons to consider the
AMD Opteron 6320

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Much more l2 cache 8 MB vs 1 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
More l3 cache 16 MB vs 8 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
More cores 8 vs 4 Twice as many cores; run more applications at once
Higher Maximum operating temperature 71.7 °C vs 64 °C More than 10% higher Maximum operating temperature

Benchmarks Real world tests of Core i7 6700K vs Opteron 6320

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 6320
1,830 MB/s

Specifications Full list of technical specs

summary

Core i7 6700K  vs
Opteron 6320 
Clock speed 4 GHz 2.8 GHz
Turbo clock speed 4.2 GHz 3.3 GHz
Cores Quad core Octa core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
XOP
AVX
SSE3
SSE
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
TBM
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 91W 115W
Annual home energy cost 21.92 $/year 27.7 $/year
Annual commercial energy cost 79.72 $/year 100.74 $/year
Performance per watt 3.49 pt/W 0.77 pt/W
Typical power consumption 73.94W 93.44W

bus

Architecture FSB HyperTransport 3.0
Transfer rate 8,000 MT/s 6,400 MT/s

details

Core i7 6700K  vs
Opteron 6320 
Threads 8 8
L2 cache 1 MB 8 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 8 MB 16 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 14 nm 32 nm
Max CPUs 1 4
Operating temperature Unknown - 64°C Unknown - 71.7°C

overclocking

Overclocked clock speed 4.61 GHz 3.3 GHz
Overclocked clock speed (Water) 4.77 GHz 3.3 GHz
Overclocked clock speed (Air) 4.61 GHz 3.3 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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3
Channels Dual Channel Quad Channel
Supports ECC No Yes
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Intel Core i7 6700K
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AMD Opteron 6320
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