CPUBoss Review Our evaluation of 6600K vs 6600 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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Front view of Intel Core i5 6600

Intel Core i5 6600

CPUBoss Winner

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
Higher clock speed 3.5 GHz vs 3.3 GHz More than 5% higher clock speed
Significantly better overclocked clock speed (Air) 4.54 GHz vs 3.75 GHz More than 20% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 4.57 GHz vs 3.87 GHz Around 20% better overclocked clock speed (Water)
Front view of Intel Core i5 6600

Reasons to consider the
Intel Core i5 6600

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Much better geekbench 3 Multi-Core score 12,206 vs 5,051 Around 2.5x better geekbench 3 Multi-Core score
Much better geekbench 3 AES single core score 5,090 MB/s vs 209.7 MB/s More than 24.2x better geekbench 3 AES single core score
Significantly lower typical power consumption 52.81W vs 73.94W Around 30% lower typical power consumption
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Better CompuBench 1.5 T-Rex score 1.67 fps vs 1.48 fps More than 10% better CompuBench 1.5 T-Rex score
Better performance per dollar 1.11 pt/$ vs 0.9 pt/$ Around 25% better performance per dollar
Better performance per watt 3.94 pt/W vs 2.48 pt/W Around 60% better performance per watt
Higher Maximum operating temperature 71 °C vs 64 °C More than 10% higher Maximum operating temperature
Significantly lower annual home energy cost 15.66 $/year vs 21.92 $/year Around 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 79.72 $/year Around 30% lower annual commercial energy cost

Benchmarks Real world tests of Core i5 6600K vs 6600

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i5 6600K
35.25 mHash/s
Core i5 6600
31.01 mHash/s

CompuBench 1.5 (Face detection)

Core i5 6600K
26.03 mPixels/s
Core i5 6600
26.59 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i5 6600K
1.48 fps
Core i5 6600
1.67 fps

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
Core i5 6600
5,090 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i5 6600K  vs
6600 
Clock speed 3.5 GHz 3.3 GHz
Turbo clock speed 3.9 GHz 3.9 GHz
Cores Quad core Quad 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
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 91W 65W
Annual home energy cost 21.92 $/year 15.66 $/year
Annual commercial energy cost 79.72 $/year 56.94 $/year
Performance per watt 2.48 pt/W 3.94 pt/W
Typical power consumption 73.94W 52.81W

bus

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

details

Core i5 6600K  vs
6600 
Architecture x86-64 x86-64
Threads 4 4
L3 cache 6 MB 6 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 14 nm 14 nm
Max CPUs 1 1
Operating temperature Unknown - 64°C Unknown - 71°C

overclocking

Overclocked clock speed 4.54 GHz 3.75 GHz
Overclocked clock speed (Water) 4.57 GHz 3.87 GHz
Overclocked clock speed (Air) 4.54 GHz 3.75 GHz

integrated graphics

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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 65,536 MB 65,536 MB
Intel Core i5 6600K
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Intel Core i5 6600
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