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Differences What are the advantages of each

Front view of Intel Core i3 3120M

Reasons to consider the
Intel Core i3 3120M

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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
Much better performance per dollar 0.62 pt/$ vs 0.02 pt/$ More than 30.2x better performance per dollar
Significantly higher Maximum operating temperature 90 °C vs 65 °C Around 40% higher Maximum operating temperature
More number of displays supported 3 vs 2 1 more number of displays supported
Newer Sep, 2012 vs Jan, 2011 Release date over 1 years later
Front view of Intel Core i3 2100T

Reasons to consider the
Intel Core i3 2100T

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Slightly better overclocked clock speed (Air) 2.65 GHz vs 2.53 GHz Around 5% better overclocked clock speed (Air)
Slightly better overclocked clock speed (Water) 2.62 GHz vs 2.5 GHz Around 5% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i3 3120M vs 2100T

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

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 i3 3120M
131,100 MB/s
Core i3 2100T
125,100 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i3 3120M  vs
2100T 
Clock speed 2.5 GHz 2.5 GHz
Cores Dual core Dual core
Socket type
rPGA 988B
LGA 1155
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
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
Performance per watt 3.96 pt/W 4 pt/W
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 i3 3120M  vs
2100T 
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 22 nm 32 nm
Max CPUs 1 1
Clock multiplier 25 25
Operating temperature Unknown - 90°C Unknown - 65°C

overclocking

Overclocked clock speed 2.53 GHz 2.65 GHz
Overclocked clock speed (Water) 2.5 GHz 2.62 GHz
Overclocked clock speed (Air) 2.53 GHz 2.65 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 4000 Intel® HD Graphics 2000
Number of displays supported 3 2
GPU clock speed 650 MHz 650 MHz
Turbo clock speed 1,100 MHz 1,100 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
DDR3-1066
DDR3L-1333
DDR3RS-1600
DDR3RS-1333
DDR3
Channels Dual Channel Dual Channel
Maximum bandwidth 25,600 MB/s 21,333.32 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Core i3 3120M
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Intel Core i3 2100T
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