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Differences What are the advantages of each

Front view of Intel Core i7 2655LE

Reasons to consider the
Intel Core i7 2655LE

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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
Much higher GPU clock speed 650 MHz vs 300 MHz Around 2.2x higher GPU clock speed
Slightly higher turbo clock speed 2.9 GHz vs 2.7 GHz More than 5% higher turbo clock speed
Better turbo clock speed 1,000 MHz vs 900 MHz More than 10% better turbo clock speed
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Front view of Intel Core i5 5200U

Reasons to consider the
Intel Core i5 5200U

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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 better performance per watt 42.03 pt/W vs 23.92 pt/W More than 75% better performance per watt
Significantly better performance per dollar 2.24 pt/$ vs 1.83 pt/$ More than 20% better performance per dollar
More number of displays supported 3 vs 2 1 more number of displays supported
Better geekbench 3 Multi-Core score 5,017 vs 3,649 More than 35% better geekbench 3 Multi-Core score
Newer Jan, 2015 vs Feb, 2011 Release date over 3 years later
Lower typical power consumption 12.19W vs 20.31W 40% lower typical power consumption
Better overclocked clock speed (Air) 2.61 GHz vs 2.2 GHz Around 20% better overclocked clock speed (Air)
Lower annual home energy cost 3.61 $/year vs 6.02 $/year 40% lower annual home energy cost
Lower annual commercial energy cost 13.14 $/year vs 21.9 $/year Around 40% lower annual commercial energy cost

Benchmarks Real world tests of Core i7 2655LE vs i5 5200U

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 2655LE
1,470,000 MB/s
Core i5 5200U
3,380,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 2655LE  vs
i5 5200U 
Clock speed 2.2 GHz 2.2 GHz
Turbo clock speed 2.9 GHz 2.7 GHz
Cores Dual core Dual core
Is unlocked No No

features

Has a NX bit Yes 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 25W 15W
Annual home energy cost 6.02 $/year 3.61 $/year
Annual commercial energy cost 21.9 $/year 13.14 $/year
Performance per watt 23.92 pt/W 42.03 pt/W
Typical power consumption 20.31W 12.19W

bus

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

details

Core i7 2655LE  vs
i5 5200U 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
L3 cache 4 MB 3 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 32 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.2 GHz 2.61 GHz
Overclocked clock speed (Water) 2.2 GHz 2.2 GHz
Overclocked clock speed (Air) 2.2 GHz 2.61 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 3000 Intel® HD Graphics 5500
Number of displays supported 2 3
GPU clock speed 650 MHz 300 MHz
Turbo clock speed 1,000 MHz 900 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Maximum bandwidth 21,333.32 MB/s 25,600 MB/s
Maximum memory size 16,998.4 MB 16,384 MB
Intel Core i7 2655LE
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Intel Core i5 5200U
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