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Differences What are the advantages of each

Front view of Intel Pentium G2020

Reasons to consider the
Intel Pentium G2020

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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 3220

Reasons to consider the
Intel Core i3 3220

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Significantly higher clock speed 3.3 GHz vs 2.9 GHz Around 15% higher clock speed
More threads 4 vs 2 Twice as many threads
Much better overclocked clock speed (Air) 3.43 GHz vs 3.03 GHz Around 15% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 3.46 GHz vs 3.1 GHz More than 10% better overclocked clock speed (Water)

Benchmarks Real world tests of Pentium G2020 vs Core i3 3220

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Pentium G2020
3.64 mHash/s
Core i3 3220
4.07 mHash/s

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

Sky Diver Data courtesy FutureMark

Cloud Gate 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

Pentium G2020
151,400 MB/s
Core i3 3220
173,000 MB/s

PassMark Data courtesy Passmark

Specifications Full list of technical specs


Pentium G2020  vs
Core i3 3220 
Clock speed 2.9 GHz 3.3 GHz
Cores Dual core Dual core
Socket type
LGA 1155


Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 55W 55W
Annual home energy cost 13.25 $/year 13.25 $/year
Annual commercial energy cost 48.18 $/year 48.18 $/year
Performance per watt 2.11 pt/W 2.69 pt/W
Typical power consumption 44.69W 44.69W


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


Pentium G2020  vs
Core i3 3220 
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 22 nm 22 nm
Max CPUs 1 1
Clock multiplier 29 33


Overclock popularity 3 50
Overclocked clock speed 3.03 GHz 3.43 GHz
Overclocked clock speed (Water) 3.1 GHz 3.46 GHz
PassMark (Overclocked) 2,960.3 3,775.1
Overclocked clock speed (Air) 3.03 GHz 3.43 GHz

integrated graphics

Label Intel® HD Graphics Intel® HD Graphics 2500
Number of displays supported 3 3
GPU clock speed 650 MHz 650 MHz
Turbo clock speed 1,050 MHz 1,050 MHz

memory controller

Memory controller Built-in Built-in
Memory type
Channels Dual Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 21,333.32 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Pentium G2020
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Intel Core i3 3220
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Showing 6 comments.
I'm quite sure g2020 has no ECC Memory support.
You might be right but most of the time depends on the PSU too....
Some of the modern games will reveal some bottlenecks if you have a fairly cheap CPU and a really good GPU.
G2020 is one of the underrated cpu for this year. People fail to realized that graphic cards matter 80% for gaming. Lousy graphic card means bad gaming performance. I'm pretty sure you can play some of the latest games on max settings with this cheap cpu as long as you have good graphic cards..... I can even play the original Crysis and Crysis 2 on my old core 2 duo cpu on some high settings.
Thanks for bringing this to our attention. There was an error in the overall performance calculation. This has now been corrected.
Your figures for (relative) performance per dollar and per watt appear incorrect - think about it! How is it possible for the G2020 to have a higher performance per watt than the i3 considering they use the same power and the i3 clearly outperforms the other? Methinks you have mixed something up. Similarly the perf per dollar cannot be more than 2x the i3 model, at least based on the quoted Amazon prices.
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