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Differences What are the advantages of each

Front view of Intel Core i5 2520M

Reasons to consider the
Intel Core i5 2520M

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Much better turbo clock speed 1,300 MHz vs 900 MHz Around 45% better turbo clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Better overclocked clock speed (Air) 3.05 GHz vs 2.4 GHz More than 25% better overclocked clock speed (Air)
Front view of Intel Core i3 3120ME

Reasons to consider the
Intel Core i3 3120ME

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Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More number of displays supported 3 vs 2 1 more number of displays supported
Newer Jul, 2012 vs Feb, 2011 Release date over 1 years later
Higher Maximum operating temperature 105 °C vs 100 °C 5% higher Maximum operating temperature

Features Key features of the Core i5 2520M  vs i3 3120ME 

clock speed

Core i5 2520M
2.5 GHz
Core i3 3120ME
2.4 GHz

L2 cache

L3 cache

gpu clock speed

Core i5 2520M
650 MHz
Core i3 3120ME
650 MHz

overclocked clock speed (air)

Core i5 2520M
3.05 GHz
Core i3 3120ME
2.4 GHz

overclocked clock speed (water)

Core i5 2520M
2.5 GHz
Core i3 3120ME
2.4 GHz

Specifications Full list of technical specs

summary

Core i5 2520M  vs
i3 3120ME 
Clock speed 2.5 GHz 2.4 GHz
Cores Dual core Dual core
Socket type
rPGA 988B
BGA 1023
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 35W 35W
Annual home energy cost 8.43 $/year 8.43 $/year
Annual commercial energy cost 30.66 $/year 30.66 $/year
Typical power consumption 28.44W 28.44W

bus

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

details

Core i5 2520M  vs
i3 3120ME 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 3 MB 3 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 1 1
Clock multiplier 25 24
Operating temperature Unknown - 100°C Unknown - 105°C

overclocking

Overclocked clock speed 3.05 GHz 2.4 GHz
Overclocked clock speed (Water) 2.5 GHz 2.4 GHz
Overclocked clock speed (Air) 3.05 GHz 2.4 GHz

integrated graphics

GPU GPU GPU
Label HD Graphics 3000 Intel® HD Graphics 4000
Number of displays supported 2 3
GPU clock speed 650 MHz 650 MHz
Turbo clock speed 1,300 MHz 900 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC No Yes
Maximum bandwidth 21,333.32 MB/s 12,800 MB/s
Maximum memory size 16,384 MB 16,384 MB
Intel Core i5 2520M
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Intel Core i3 3120ME
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