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Differences What are the advantages of each

Front view of Intel Xeon E3-1220

Reasons to consider the
Intel Xeon E3-1220

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Much higher clock speed 3.1 GHz vs 1.86 GHz More than 65% higher clock speed
More cores 4 vs 2 Twice as many cores; run more applications at once
Much better overclocked clock speed (Air) 3.49 GHz vs 1.87 GHz More than 85% better overclocked clock speed (Air)
Significantly newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
More threads 4 vs 2 Twice as many threads
Much better overclocked clock speed (Water) 3.1 GHz vs 1.87 GHz More than 65% better overclocked clock speed (Water)
Newer Apr, 2011 vs Dec, 2006 Release date over 4 years later
Front view of Intel Xeon 5128

Reasons to consider the
Intel Xeon 5128

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Much more l2 cache 4 MB vs 1 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 2 MB/core vs 0.25 MB/core 8x more l2 cache per core
Significantly lower typical power consumption 32.5W vs 65W 2x lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Significantly lower annual commercial energy cost 35.04 $/year vs 70.08 $/year 2x lower annual commercial energy cost
Significantly lower annual home energy cost 9.64 $/year vs 19.27 $/year 2x lower annual home energy cost

Features Key features of the Xeon E3-1220  vs 5128 

clock speed

Xeon E3-1220
3.1 GHz
Xeon 5128
1.86 GHz

L2 cache

overclocked clock speed (air)

Xeon E3-1220
3.49 GHz
Xeon 5128
1.87 GHz

overclocked clock speed (water)

Xeon E3-1220
3.1 GHz
Xeon 5128
1.87 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E3-1220  vs
5128 
Clock speed 3.1 GHz 1.86 GHz
Cores Quad core Dual core
Socket type
LGA 1155
LGA 771

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 40W
Annual home energy cost 19.27 $/year 9.64 $/year
Annual commercial energy cost 70.08 $/year 35.04 $/year
Typical power consumption 65W 32.5W

details

Xeon E3-1220  vs
5128 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 1 MB 4 MB
L2 cache per core 0.25 MB/core 2 MB/core
Manufacture process 32 nm 65 nm
Max CPUs 1 2
Clock multiplier 31 7
Operating temperature Unknown - 69.1°C Unknown - 58°C

overclocking

Overclocked clock speed 3.49 GHz 1.87 GHz
Overclocked clock speed (Water) 3.1 GHz 1.87 GHz
Overclocked clock speed (Air) 3.49 GHz 1.87 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 FSB
Number of links 1 1
Intel Xeon E3-1220
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Intel Xeon 5128
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