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Differences What are the advantages of each

Front view of Intel Core i5 6287U

Reasons to consider the
Intel Core i5 6287U

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Much newer manufacturing process 14 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 22.75W vs 93.6W 4.1x lower typical power consumption
More number of displays supported 3 vs 2 1 more number of displays supported
Newer Jul, 2015 vs Jan, 2011 Release date over 4 years later
Significantly better performance per watt 11.82 pt/W vs 8.14 pt/W More than 45% better performance per watt
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Much lower annual commercial energy cost 24.53 $/year vs 100.92 $/year 4.1x lower annual commercial energy cost
Much lower annual home energy cost 6.75 $/year vs 27.75 $/year 4.1x lower annual home energy cost
Front view of Intel Core i5 2400

Reasons to consider the
Intel Core i5 2400

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Much better performance per dollar 4.58 pt/$ vs 1.09 pt/$ Around 4.2x better performance per dollar
Much higher GPU clock speed 850 MHz vs 300 MHz More than 2.8x higher GPU clock speed
More l2 cache 1 MB vs 0.5 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
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

Features Key features of the Core i5 6287U  vs 2400 

clock speed

Core i5 6287U
3.1 GHz
Core i5 2400
3.1 GHz

turbo clock speed

Core i5 6287U
3.5 GHz
Core i5 2400
3.4 GHz

L2 cache

gpu clock speed

Core i5 6287U
300 MHz
Core i5 2400
850 MHz

overclocked clock speed (air)

Core i5 6287U
3.5 GHz
Core i5 2400
3.54 GHz

overclocked clock speed (water)

Core i5 6287U
3.5 GHz
Core i5 2400
3.51 GHz

Specifications Full list of technical specs

summary

Core i5 6287U  vs
2400 
Clock speed 3.1 GHz 3.1 GHz
Turbo clock speed 3.5 GHz 3.4 GHz
Cores Dual core Quad 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 28W 95W
Annual home energy cost 6.75 $/year 27.75 $/year
Annual commercial energy cost 24.53 $/year 100.92 $/year
Performance per watt 11.82 pt/W 8.14 pt/W
Typical power consumption 22.75W 93.6W

bus

Architecture FSB DMI
Number of links 1 1
Transfer rate 4,000 MT/s 5,000 MT/s

details

Core i5 6287U  vs
2400 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 4 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 14 nm 32 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.5 GHz 3.54 GHz
Overclocked clock speed (Water) 3.5 GHz 3.51 GHz
Overclocked clock speed (Air) 3.5 GHz 3.54 GHz

integrated graphics

GPU GPU GPU
Label Intel® Iris™ Graphics 550 Intel® HD Graphics 2000
Number of displays supported 3 2
GPU clock speed 300 MHz 850 MHz
Turbo clock speed 1,100 MHz 1,100 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 21,333.32 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Core i5 6287U
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Intel Core i5 2400
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