CPUBoss Review Our evaluation of E3-1220 v5 vs 6700K 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
Front view of Intel Core i7 6700K

Intel Core i7 6700K

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Xeon E3-1220 v5

Reasons to consider the
Intel Xeon E3-1220 v5

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly better performance per dollar 1.28 pt/$ vs 0.91 pt/$ More than 40% better performance per dollar
Lower typical power consumption 65W vs 73.94W More than 10% lower typical power consumption
Lower annual home energy cost 19.27 $/year vs 21.92 $/year More than 10% lower annual home energy cost
Lower annual commercial energy cost 70.08 $/year vs 79.72 $/year More than 10% lower annual commercial energy cost
Newer Oct, 2015 vs Jul, 2015 Release date 3 months later
Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Significantly higher clock speed 4 GHz vs 3 GHz Around 35% higher clock speed
Higher turbo clock speed 4.2 GHz vs 3.5 GHz More than 20% higher turbo clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Better PassMark score 11,109 vs 7,691 Around 45% better PassMark score
More threads 8 vs 4 Twice as many threads
Better PassMark (Single core) score 2,349 vs 1,976 Around 20% better PassMark (Single core) score
Significantly better overclocked clock speed (Water) 4.77 GHz vs 3.5 GHz More than 35% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon E3-1220 v5 vs Core i7 6700K

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1220 v5  vs
Core i7 6700K 
Clock speed 3 GHz 4 GHz
Turbo clock speed 3.5 GHz 4.2 GHz
Cores Quad core Quad core

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 91W
Annual home energy cost 19.27 $/year 21.92 $/year
Annual commercial energy cost 70.08 $/year 79.72 $/year
Performance per watt 3.35 pt/W 3.49 pt/W
Typical power consumption 65W 73.94W

bus

Architecture FSB FSB
Number of links 1 0
Transfer rate 8,000 MT/s 8,000 MT/s

details

Xeon E3-1220 v5  vs
Core i7 6700K 
Architecture x86-64 x86-64
Threads 4 8
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 14 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 4.53 GHz 4.61 GHz
Overclocked clock speed (Water) 3.5 GHz 4.77 GHz
Overclocked clock speed (Air) 4.53 GHz 4.61 GHz

integrated graphics

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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3L-1333
Channels Dual Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 12,800 MB/s 25,600 MB/s
Maximum memory size 65,536 MB 65,536 MB
Intel Xeon E3-1220 v5
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Intel Core i7 6700K
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