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Differences What are the advantages of each

Front view of Intel Xeon E3-1220 v3

Reasons to consider the
Intel Xeon E3-1220 v3

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Much higher clock speed 3.1 GHz vs 2.5 GHz Around 25% higher clock speed
Much more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Apr, 2013 vs Nov, 2011 Release date over 1 years later
Front view of AMD Opteron 4274 HE

Reasons to consider the
AMD Opteron 4274 HE

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Much more l2 cache 8 MB vs 1 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 8 vs 4 Twice as many 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 8 vs 4 Twice as many threads
Lower typical power consumption 52.81W vs 65W Around 20% lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Lower annual commercial energy cost 56.94 $/year vs 70.08 $/year Around 20% lower annual commercial energy cost
Lower annual home energy cost 15.66 $/year vs 19.27 $/year Around 20% lower annual home energy cost

Features Key features of the Xeon E3-1220 v3  vs Opteron 4274 HE 

clock speed

turbo clock speed

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon E3-1220 v3  vs
Opteron 4274 HE 
Clock speed 3.1 GHz 2.5 GHz
Turbo clock speed 3.5 GHz 3.5 GHz
Cores Quad core Octa core

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
AVX 2.0

power consumption

TDP 80W 65W
Annual home energy cost 19.27 $/year 15.66 $/year
Annual commercial energy cost 70.08 $/year 56.94 $/year
Typical power consumption 65W 52.81W

details

Xeon E3-1220 v3  vs
Opteron 4274 HE 
Threads 4 8
L2 cache 1 MB 8 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 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 2

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

memory controller

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

bus

Architecture DMI HyperTransport 3.0
Number of links 0 2
Transfer rate 5,000 MT/s 6,400 MT/s
Intel Xeon E3-1220 v3
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AMD Opteron 4274 HE
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