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Intel Core i5 6400

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Front view of Intel Core i5 6400

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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Significantly newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better CompuBench 1.5 T-Rex score 1.35 fps vs 0.85 fps Around 60% better CompuBench 1.5 T-Rex score
Much better PassMark (Single core) score 1,832 vs 476 More than 3.8x better PassMark (Single core) score
Much better performance per dollar 0.98 pt/$ vs 0.36 pt/$ Around 2.8x better performance per dollar
More l3 cache 6 MB vs 3 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly better PassMark score 6,727 vs 1,271 More than 5.2x better PassMark score
Significantly better overclocked clock speed (Air) 3.67 GHz vs 2.7 GHz More than 35% better overclocked clock speed (Air)
More cores 4 vs 2 Twice as many cores; run more applications at once
Newer Jul, 2015 vs Jul, 2013 Release date over 2 years later
Much better overclocked clock speed (Water) 4.34 GHz vs 2.7 GHz More than 60% better overclocked clock speed (Water)
Front view of Intel Core i5 4400E

Reasons to consider the
Intel Core i5 4400E

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Significantly lower typical power consumption 30.06W vs 52.81W Around 45% lower typical power consumption
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Better turbo clock speed 1,000 MHz vs 950 MHz More than 5% better turbo clock speed
Higher GPU clock speed 400 MHz vs 350 MHz Around 15% higher GPU clock speed
Significantly lower annual home energy cost 8.91 $/year vs 15.66 $/year Around 45% lower annual home energy cost
Significantly lower annual commercial energy cost 32.41 $/year vs 56.94 $/year Around 45% lower annual commercial energy cost

Benchmarks Real world tests of Core i5 6400 vs 4400E

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i5 6400
24.49 mHash/s
Core i5 4400E
12.65 mHash/s

CompuBench 1.5 (Face detection)

Core i5 6400
19.56 mPixels/s
Core i5 4400E
12.13 mPixels/s

CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench

Core i5 6400
237.31 fps
Core i5 4400E
77.02 fps

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i5 6400
1.35 fps
Core i5 4400E
0.85 fps

CompuBench 1.5 (Video composition) Data courtesy CompuBench

Core i5 6400
10.75 fps
Core i5 4400E
8.96 fps

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i5 6400  vs
4400E 
Clock speed 2.7 GHz 2.7 GHz
Turbo clock speed 3.3 GHz 3.3 GHz
Cores Quad core Dual core
Is unlocked No 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 65W 37W
Annual home energy cost 15.66 $/year 8.91 $/year
Annual commercial energy cost 56.94 $/year 32.41 $/year
Performance per watt 2.82 pt/W 2.61 pt/W
Typical power consumption 52.81W 30.06W

bus

Architecture FSB DMI 2.0
Number of links 1 1
Transfer rate 8,000 MT/s 5,000 MT/s

details

Core i5 6400  vs
4400E 
Architecture x86-64 x86-64
Threads 4 4
L3 cache 6 MB 3 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 14 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.67 GHz 2.7 GHz
Overclocked clock speed (Water) 4.34 GHz 2.7 GHz
Overclocked clock speed (Air) 3.67 GHz 2.7 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 530 HD 4600
Number of displays supported 3 3
GPU clock speed 350 MHz 400 MHz
Turbo clock speed 950 MHz 1,000 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3-1600
DDR3-1333
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 16,384 MB
Intel Core i5 6400
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Intel Core i5 4400E
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