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Differences What are the advantages of each

Front view of Intel Xeon E3-1220 v2

Reasons to consider the
Intel Xeon E3-1220 v2

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Much higher clock speed 3.1 GHz vs 2.7 GHz Around 15% higher clock speed
Significantly higher turbo clock speed 3.5 GHz vs 3.1 GHz Around 15% higher turbo clock speed
Much better overclocked clock speed (Air) 3.45 GHz vs 2.7 GHz Around 30% better overclocked clock speed (Air)
Significantly lower typical power consumption 56.06W vs 77.19W More than 25% lower typical power consumption
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly more l3 cache per core 2 MB/core vs 1.33 MB/core More than 50% more l3 cache per core
Much better overclocked clock speed (Water) 3.1 GHz vs 2.7 GHz Around 15% better overclocked clock speed (Water)
Significantly lower annual commercial energy cost 60.44 $/year vs 83.22 $/year More than 25% lower annual commercial energy cost
Significantly lower annual home energy cost 16.62 $/year vs 22.89 $/year More than 25% lower annual home energy cost
Newer May, 2012 vs Nov, 2011 Release date 6 months later
Front view of AMD Opteron 4226

Reasons to consider the
AMD Opteron 4226

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Much more l2 cache 6 MB vs 1 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 6 vs 4 2 more cores; run more applications at once
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
More threads 6 vs 4 2 more threads
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration

Features Key features of the Xeon E3-1220 v2  vs Opteron 4226 

clock speed

Xeon E3-1220 v2
3.1 GHz
Opteron 4226
2.7 GHz

turbo clock speed

Xeon E3-1220 v2
3.5 GHz
Opteron 4226
3.1 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E3-1220 v2
3.45 GHz
Opteron 4226
2.7 GHz

overclocked clock speed (water)

Xeon E3-1220 v2
3.1 GHz
Opteron 4226
2.7 GHz

Specifications Full list of technical specs

summary

Xeon E3-1220 v2  vs
Opteron 4226 
Clock speed 3.1 GHz 2.7 GHz
Turbo clock speed 3.5 GHz 3.1 GHz
Cores Quad core Hexa core
Socket type
LGA 1155
C32

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
Supplemental SSE3
AES

power consumption

TDP 69W 95W
Annual home energy cost 16.62 $/year 22.89 $/year
Annual commercial energy cost 60.44 $/year 83.22 $/year
Typical power consumption 56.06W 77.19W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3

details

Xeon E3-1220 v2  vs
Opteron 4226 
Threads 4 6
L2 cache 1 MB 6 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 1.33 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 2
Clock multiplier 31 15

overclocking

Overclock popularity 1 0
Overclocked clock speed 3.45 GHz 2.7 GHz
Overclocked clock speed (Water) 3.1 GHz 2.7 GHz
Overclocked clock speed (Air) 3.45 GHz 2.7 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

bus

Architecture DMI HyperTransport 3.0
Number of links 1 2
Transfer rate 5,000 MT/s 6,400 MT/s
Intel Xeon E3-1220 v2
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AMD Opteron 4226
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