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Differences What are the advantages of each

Front view of Intel Pentium G840

Reasons to consider the
Intel Pentium G840

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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 better turbo clock speed 1,100 MHz vs 1,050 MHz Around 5% better turbo clock speed
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Significantly higher Maximum operating temperature 69.1 °C vs 65.3 °C More than 5% higher Maximum operating temperature
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 2.8 GHz Around 20% higher clock speed
More threads 4 vs 2 Twice as many threads
Much 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
Much lower typical power consumption 44.69W vs 71.53W Around 40% lower typical power consumption
Much better overclocked clock speed (Air) 3.43 GHz vs 2.93 GHz More than 15% better overclocked clock speed (Air)
Much lower annual home energy cost 13.25 $/year vs 27.42 $/year 2.1x lower annual home energy cost
Much better overclocked clock speed (Water) 3.46 GHz vs 2.8 GHz Around 25% better overclocked clock speed (Water)
Significantly lower annual commercial energy cost 48.18 $/year vs 68.24 $/year Around 30% lower annual commercial energy cost
Newer Sep, 2012 vs Apr, 2011 Release date over 1 years later

Benchmarks Real world tests of Pentium G840 vs Core i3 3220

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 G840
138,400 MB/s
Core i3 3220
173,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Pentium G840  vs
Core i3 3220 
Clock speed 2.8 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
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 55W
Annual home energy cost 27.42 $/year 13.25 $/year
Annual commercial energy cost 68.24 $/year 48.18 $/year
Performance per watt 1.93 pt/W 2.69 pt/W
Typical power consumption 71.53W 44.69W

bus

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

details

Pentium G840  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 32 nm 22 nm
Max CPUs 1 1
Clock multiplier 28 33
Operating temperature Unknown - 69.1°C Unknown - 65.3°C

overclocking

Overclocked clock speed 2.93 GHz 3.43 GHz
Overclocked clock speed (Water) 2.8 GHz 3.46 GHz
Overclocked clock speed (Air) 2.93 GHz 3.43 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics Intel® HD Graphics 2500
Number of displays supported 2 3
GPU clock speed 850 MHz 650 MHz
Turbo clock speed 1,100 MHz 1,050 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Maximum bandwidth 21,333.32 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Pentium G840
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Intel Core i3 3220
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