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Differences What are the advantages of each

Front view of Intel Xeon E5-2420

Reasons to consider the
Intel Xeon E5-2420

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Much more l3 cache 15 MB vs 1 MB 15x more l3 cache; more data can be stored in the l3 cache for quick access later
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
More cores 6 vs 2 Three times as many cores; run more applications at once
More threads 12 vs 2 10 more threads
Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l3 cache per core 2.5 MB/core vs 0.5 MB/core 5x more l3 cache per core
Newer May, 2012 vs Aug, 2006 Release date over 5 years later
Front view of AMD Opteron 8214

Reasons to consider the
AMD Opteron 8214

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Much higher clock speed 2.2 GHz vs 1.9 GHz More than 15% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.33 MB/core More than 3x more l2 cache per core
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Much better overclocked clock speed (Air) 2.74 GHz vs 2.36 GHz More than 15% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 2.2 GHz vs 1.9 GHz More than 15% better overclocked clock speed (Water)

Features Key features of the Xeon E5-2420  vs Opteron 8214 

clock speed

Xeon E5-2420
1.9 GHz
Opteron 8214
2.2 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E5-2420
2.36 GHz
Opteron 8214
2.74 GHz

overclocked clock speed (water)

Xeon E5-2420
1.9 GHz
Opteron 8214
2.2 GHz

Specifications Full list of technical specs

summary

Xeon E5-2420  vs
Opteron 8214 
Clock speed 1.9 GHz 2.2 GHz
Cores Hexa core Dual core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
AVX
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

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

details

Xeon E5-2420  vs
Opteron 8214 
Threads 12 2
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 1 MB/core
L3 cache 15 MB 1 MB
L3 cache per core 2.5 MB/core 0.5 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 2 8
Voltage range 0.6 - 1.35V 1.3 - UnknownV

overclocking

Overclocked clock speed 2.36 GHz 2.74 GHz
Overclocked clock speed (Water) 1.9 GHz 2.2 GHz
Overclocked clock speed (Air) 2.36 GHz 2.74 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
Intel Xeon E5-2420
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AMD Opteron 8214
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