CPUBoss Review Our evaluation of 6400 vs 6300 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

CPUBoss Score

Combination of all six facets

Winner
Intel Core i3 6300 

CPUBoss recommends the Intel Core i3 6300  based on its single-core performance, power consumption and value.

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VS

Differences What are the advantages of each

Front view of Intel Core i5 6400

Reasons to consider the
Intel Core i5 6400

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Slightly more l3 cache 6 MB vs 4 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 4 vs 2 Twice as many cores; run more applications at once
Better geekbench 3 single core score 2,428.5 vs 2,165 More than 10% better geekbench 3 single core score
Higher Maximum operating temperature 71 °C vs 65 °C Around 10% higher Maximum operating temperature
Front view of Intel Core i3 6300

Reasons to consider the
Intel Core i3 6300

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Significantly higher clock speed 3.8 GHz vs 2.7 GHz More than 40% higher clock speed
Significantly better turbo clock speed 1,150 MHz vs 950 MHz More than 20% better turbo clock speed
Significantly better performance per dollar 1.3 pt/$ vs 0.98 pt/$ Around 35% better performance per dollar
Lower typical power consumption 41.44W vs 52.81W More than 20% lower typical power consumption
Better overclocked clock speed (Air) 4.37 GHz vs 3.67 GHz Around 20% better overclocked clock speed (Air)
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better CompuBench 1.5 video composition score 12.9 fps vs 10.75 fps Around 20% better CompuBench 1.5 video composition score
Better performance per watt 3.82 pt/W vs 2.82 pt/W More than 35% better performance per watt
Lower annual home energy cost 12.29 $/year vs 15.66 $/year More than 20% lower annual home energy cost
Lower annual commercial energy cost 44.68 $/year vs 56.94 $/year More than 20% lower annual commercial energy cost
Better overclocked clock speed (Water) 4.62 GHz vs 4.34 GHz More than 5% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i5 6400 vs i3 6300

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i5 6400
24.49 mHash/s
Core i3 6300
30.2 mHash/s

CompuBench 1.5 (Face detection)

Core i5 6400
19.56 mPixels/s
Core i3 6300
22.05 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i5 6400
1.35 fps
Core i3 6300
1.61 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i5 6400
3,989.5
Core i3 6300
4,431

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i5 6400
2,428.5
Core i3 6300
2,165

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 6400
155.25 MB/s
Core i3 6300
168.2 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i5 6400  vs
i3 6300 
Clock speed 2.7 GHz 3.8 GHz
Cores Quad core Dual core
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing No 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 65W 51W
Annual home energy cost 15.66 $/year 12.29 $/year
Annual commercial energy cost 56.94 $/year 44.68 $/year
Performance per watt 2.82 pt/W 3.82 pt/W
Typical power consumption 52.81W 41.44W

bus

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

details

Core i5 6400  vs
i3 6300 
Architecture x86-64 x86-64
Threads 4 4
L3 cache 6 MB 4 MB
L3 cache per core 1.5 MB/core 2 MB/core
Manufacture process 14 nm 14 nm
Max CPUs 1 1
Operating temperature Unknown - 71°C Unknown - 65°C

overclocking

Overclocked clock speed 3.67 GHz 4.37 GHz
Overclocked clock speed (Water) 4.34 GHz 4.62 GHz
Overclocked clock speed (Air) 3.67 GHz 4.37 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 950 MHz 1,150 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3L-1333
Channels Dual Channel Dual Channel
Supports ECC No Yes
Maximum bandwidth 25,600 MB/s 12,800 MB/s
Maximum memory size 65,536 MB 65,536 MB
Intel Core i5 6400
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Intel Core i3 6300
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