CPUBoss Review Our evaluation of 6700K vs 4940MX 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

No winner declared

Too close to call

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VS
Front view of Intel Core i7 4940MX

Intel Core i7 4940MX

CPUBoss Winner

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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Significantly higher clock speed 4 GHz vs 3.1 GHz Around 30% higher clock speed
Much newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher turbo clock speed 4.2 GHz vs 4 GHz More than 5% higher turbo clock speed
Better 3DMark06 CPU score 80.5 vs 69.6 More than 15% better 3DMark06 CPU score
Newer Jul, 2015 vs Jan, 2014 Release date over 1 years later
Front view of Intel Core i7 4940MX

Reasons to consider the
Intel Core i7 4940MX

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Much better performance per watt 32.86 pt/W vs 3.45 pt/W More than 9.5x better performance per watt
Significantly better turbo clock speed 1,350 MHz vs 1,150 MHz More than 15% better turbo clock speed
Much better performance per dollar 2.5 pt/$ vs 1.08 pt/$ More than 2.2x better performance per dollar
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Lower typical power consumption 46.31W vs 73.94W More than 35% lower typical power consumption
Higher GPU clock speed 400 MHz vs 350 MHz Around 15% higher GPU clock speed
Lower annual commercial energy cost 49.93 $/year vs 79.72 $/year More than 35% lower annual commercial energy cost
Lower annual home energy cost 13.73 $/year vs 21.92 $/year More than 35% lower annual home energy cost

Benchmarks Real world tests of Core i7 6700K vs 4940MX

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
Core i7 4940MX
4,740,000 MB/s

3D Mark 06 (CPU)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6700K  vs
4940MX 
Clock speed 4 GHz 3.1 GHz
Turbo clock speed 4.2 GHz 4 GHz
Cores Quad core Quad core
Is unlocked Yes Yes

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 12,800 MB/s
Maximum memory size 65,536 MB 32,768 MB

details

Core i7 6700K  vs
4940MX 
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 14 nm 22 nm
Max CPUs 1 1

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 530 Intel® HD Graphics 4600
Number of displays supported 3 3
GPU clock speed 350 MHz 400 MHz
Turbo clock speed 1,150 MHz 1,350 MHz

power consumption

TDP 91W 57W
Annual home energy cost 21.92 $/year 13.73 $/year
Annual commercial energy cost 79.72 $/year 49.93 $/year
Performance per watt 3.45 pt/W 32.86 pt/W
Typical power consumption 73.94W 46.31W

bus

Architecture FSB DMI 2.0
Number of links 0 1
Transfer rate 8,000 MT/s 5,000 MT/s
Intel Core i7 6700K
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Intel Core i7 4940MX
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