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Differences What are the advantages of each

Front view of Intel Core i5 3470

Reasons to consider the
Intel Core i5 3470

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Much newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 3.2 GHz vs 2.5 GHz Around 30% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Significantly better overclocked clock speed (Air) 3.67 GHz vs 2.5 GHz More than 45% better overclocked clock speed (Air)
Higher Maximum operating temperature 67.4 °C vs 55 °C Around 25% higher Maximum operating temperature
Newer Jun, 2012 vs Apr, 2009 Release date over 3 years later
Much better overclocked clock speed (Water) 4.09 GHz vs 2.5 GHz Around 65% better overclocked clock speed (Water)
Front view of AMD Opteron 8381 HE

Reasons to consider the
AMD Opteron 8381 HE

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Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much lower typical power consumption 44.69W vs 86.05W Around 50% lower typical power consumption
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower annual home energy cost 13.25 $/year vs 31.22 $/year 2.4x lower annual home energy cost
Much lower annual commercial energy cost 48.18 $/year vs 84.62 $/year Around 45% lower annual commercial energy cost

Features Key features of the Core i5 3470  vs Opteron 8381 HE 

clock speed

Core i5 3470
3.2 GHz
Opteron 8381 HE
2.5 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Core i5 3470
3.67 GHz
Opteron 8381 HE
2.5 GHz

overclocked clock speed (water)

Core i5 3470
4.09 GHz
Opteron 8381 HE
2.5 GHz

Specifications Full list of technical specs

summary

Core i5 3470  vs
Opteron 8381 HE 
Clock speed 3.2 GHz 2.5 GHz
Cores Quad 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 77W 55W
Annual home energy cost 31.22 $/year 13.25 $/year
Annual commercial energy cost 84.62 $/year 48.18 $/year
Typical power consumption 86.05W 44.69W

bus

Architecture DMI 2.0 HyperTransport 3.0

details

Core i5 3470  vs
Opteron 8381 HE 
Threads 4 4
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 6 MB 6 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 22 nm 45 nm
Max CPUs 1 8
Clock multiplier 32 12
Voltage range Unknown - 1.13V 1.32 - UnknownV
Operating temperature Unknown - 67.4°C 0 - 55°C

overclocking

Overclocked clock speed 3.67 GHz 2.5 GHz
Overclocked clock speed (Water) 4.09 GHz 2.5 GHz
Overclocked clock speed (Air) 3.67 GHz 2.5 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 2500 N/A
Latest DirectX 11.0 N/A
Number of displays supported 3 N/A
GPU clock speed 650 MHz N/A
Turbo clock speed 1,100 MHz N/A
Intel Core i5 3470
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AMD Opteron 8381 HE
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