CPUBoss Review Our evaluation of 6700K vs B75 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

9.1

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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Much higher turbo clock speed 4.2 GHz vs 0 GHz Compared to all cpus, 4.2 GHz turbo clock speed is just OK
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 4 GHz vs 3 GHz Around 35% higher clock speed
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 1,077 Around 2.2x better PassMark (Single core) score
Much better PassMark score 11,109 vs 3,155 More than 3.5x better PassMark score
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
More threads 8 vs 3 5 more threads
Better performance per watt 3.49 pt/W vs 1.46 pt/W Around 2.5x better performance per watt
More cores 4 vs 3 1 more cores; run more applications at once
Better overclocked clock speed (Air) 4.61 GHz vs 4.2 GHz Around 10% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.77 GHz vs 3 GHz Around 60% better overclocked clock speed (Water)
Front view of AMD Phenom II X3 B75

Reasons to consider the
AMD Phenom II X3 B75

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Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly more l2 cache per core 0.67 MB/core vs 0.25 MB/core Around 2.8x more l2 cache per core
Higher Maximum operating temperature 73 °C vs 64 °C Around 15% higher Maximum operating temperature

Benchmarks Real world tests of Core i7 6700K vs Phenom II X3 B75

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
Phenom II X3 B75
120,500 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6700K  vs
Phenom II X3 B75 
Clock speed 4 GHz 3 GHz
Turbo clock speed 4.2 GHz 0 GHz
Cores Quad core Tri core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Supports trusted computing No 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 95W
Annual home energy cost 21.92 $/year 22.89 $/year
Annual commercial energy cost 79.72 $/year 83.22 $/year
Performance per watt 3.49 pt/W 1.46 pt/W
Typical power consumption 73.94W 77.19W

details

Core i7 6700K  vs
Phenom II X3 B75 
Architecture x86-64 x86-64
Threads 8 3
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 0.67 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 14 nm 45 nm
Max CPUs 1 1
Operating temperature Unknown - 64°C Unknown - 73°C

overclocking

Overclocked clock speed 4.61 GHz 4.2 GHz
Overclocked clock speed (Water) 4.77 GHz 3 GHz
Overclocked clock speed (Air) 4.61 GHz 4.2 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
Intel Core i7 6700K
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AMD Phenom II X3 B75
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