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Differences What are the advantages of each

Front view of Intel Core i5 2400

Reasons to consider the
Intel Core i5 2400

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Much 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
More cores 4 vs 2 Twice as many cores; run more applications at once
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly higher Maximum operating temperature 72.6 °C vs 69.1 °C More than 5% higher Maximum operating temperature
Better overclocked clock speed (Air) 3.54 GHz vs 3.42 GHz Around 5% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 3.51 GHz vs 3.37 GHz Around 5% better overclocked clock speed (Water)
Front view of Intel Core i3 2120

Reasons to consider the
Intel Core i3 2120

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Much lower typical power consumption 52.81W vs 93.6W Around 45% lower typical power consumption
Higher clock speed 3.3 GHz vs 3.1 GHz More than 5% higher clock speed
Much lower annual home energy cost 15.66 $/year vs 27.75 $/year Around 45% lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 100.92 $/year Around 45% lower annual commercial energy cost

Benchmarks Real world tests of Core i5 2400 vs i3 2120

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 i5 2400
2,260,000 MB/s
Core i3 2120
162,800 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

Core i5 2400
10,769
Core i3 2120
8,526

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i5 2400  vs
i3 2120 
Clock speed 3.1 GHz 3.3 GHz
Cores Quad core Dual core
Socket type
LGA 1155
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 95W 65W
Annual home energy cost 27.75 $/year 15.66 $/year
Annual commercial energy cost 100.92 $/year 56.94 $/year
Performance per watt 8.14 pt/W 2.79 pt/W
Typical power consumption 93.6W 52.81W

bus

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

details

Core i5 2400  vs
i3 2120 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 0.5 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 6 MB 3 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 1 1
Clock multiplier 31 33
Operating temperature Unknown - 72.6°C Unknown - 69.1°C

overclocking

Overclock popularity 63 22
Overclocked clock speed 3.54 GHz 3.42 GHz
Overclocked clock speed (Water) 3.51 GHz 3.37 GHz
PassMark (Overclocked) 3,244.5 1,336.7
Overclocked clock speed (Air) 3.54 GHz 3.42 GHz

integrated graphics

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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Maximum bandwidth 21,333.32 MB/s 21,333.32 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Core i5 2400
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Intel Core i3 2120
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