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Differences What are the advantages of each

Front view of Intel Pentium G620T

Reasons to consider the
Intel Pentium G620T

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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
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Front view of Intel Core i3 2120

Reasons to consider the
Intel Core i3 2120

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Much higher clock speed 3.3 GHz vs 2.2 GHz Around 50% higher clock speed
More threads 4 vs 2 Twice as many threads
Much better performance per watt 2.79 pt/W vs 1.12 pt/W Around 2.5x better performance per watt
Much better overclocked clock speed (Air) 3.42 GHz vs 2.25 GHz More than 50% better overclocked clock speed (Air)
Lower typical power consumption 52.81W vs 67.2W More than 20% lower typical power consumption
Significantly higher Maximum operating temperature 69.1 °C vs 65 °C More than 5% higher Maximum operating temperature
Much better overclocked clock speed (Water) 3.37 GHz vs 2.2 GHz Around 55% better overclocked clock speed (Water)
Much lower annual home energy cost 15.66 $/year vs 26.49 $/year More than 40% lower annual home energy cost
Lower annual commercial energy cost 56.94 $/year vs 63.07 $/year Around 10% lower annual commercial energy cost

Benchmarks Real world tests of Pentium G620T vs Core i3 2120

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Pentium G620T
2,700.5
Core i3 2120
5,074

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Pentium G620T
108.1 MB/s
Core i3 2120
162,800 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Pentium G620T  vs
Core i3 2120 
Clock speed 2.2 GHz 3.3 GHz
Cores Dual core Dual core
Socket type
LGA 1155

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 65W
Annual home energy cost 26.49 $/year 15.66 $/year
Annual commercial energy cost 63.07 $/year 56.94 $/year
Performance per watt 1.12 pt/W 2.79 pt/W
Typical power consumption 67.2W 52.81W

bus

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

details

Pentium G620T  vs
Core i3 2120 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 1 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
L3 cache 3 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 22 33
Operating temperature Unknown - 65°C Unknown - 69.1°C

overclocking

Overclocked clock speed 2.25 GHz 3.42 GHz
Overclocked clock speed (Water) 2.2 GHz 3.37 GHz
Overclocked clock speed (Air) 2.25 GHz 3.42 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics Intel® HD Graphics 2000
Number of displays supported 2 2
GPU clock speed 650 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 17,066.66 MB/s 21,333.32 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Pentium G620T
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Intel Core i3 2120
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