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Differences What are the advantages of each

Front view of Intel Core i3 3220

Reasons to consider the
Intel Core i3 3220

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Much newer manufacturing process 22 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 3.3 GHz vs 1.8 GHz Around 85% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better overclocked clock speed (Air) 3.43 GHz vs 1.8 GHz More than 90% better overclocked clock speed (Air)
Much more l3 cache per core 1.5 MB/core vs 0.5 MB/core 3x more l3 cache per core
Newer Sep, 2012 vs Sep, 2007 Release date over 5 years later
Higher Maximum operating temperature 65.3 °C vs 55 °C Around 20% higher Maximum operating temperature
Much better overclocked clock speed (Water) 3.46 GHz vs 1.8 GHz More than 90% better overclocked clock speed (Water)
Front view of AMD Opteron 2346 HE

Reasons to consider the
AMD Opteron 2346 HE

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Much more l2 cache 2 MB vs 0.5 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More cores 4 vs 2 Twice as many cores; run more applications at once
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core

Features Key features of the Core i3 3220  vs Opteron 2346 HE 

clock speed

Core i3 3220
3.3 GHz
Opteron 2346 HE
1.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Core i3 3220
3.43 GHz
Opteron 2346 HE
1.8 GHz

overclocked clock speed (water)

Core i3 3220
3.46 GHz
Opteron 2346 HE
1.8 GHz

Specifications Full list of technical specs

summary

Core i3 3220  vs
Opteron 2346 HE 
Clock speed 3.3 GHz 1.8 GHz
Cores Dual core Quad core
Socket type
LGA 1155
F
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
AES
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
Typical power consumption 44.69W 44.69W

details

Core i3 3220  vs
Opteron 2346 HE 
Threads 4 4
L2 cache 0.5 MB 2 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 3 MB 2 MB
L3 cache per core 1.5 MB/core 0.5 MB/core
Manufacture process 22 nm 65 nm
Max CPUs 1 2
Clock multiplier 33 9
Operating temperature Unknown - 65.3°C 0 - 55°C

overclocking

Overclocked clock speed 3.43 GHz 1.8 GHz
Overclocked clock speed (Water) 3.46 GHz 1.8 GHz
Overclocked clock speed (Air) 3.43 GHz 1.8 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 2500 N/A
Number of displays supported 3 N/A
GPU clock speed 650 MHz N/A
Turbo clock speed 1,050 MHz N/A
Intel Core i3 3220
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AMD Opteron 2346 HE
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