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Differences What are the advantages of each

Front view of Intel Xeon E5506

Reasons to consider the
Intel Xeon E5506

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Much lower typical power consumption 65W vs 138.13W 2.1x lower typical power consumption
Much lower annual commercial energy cost 70.08 $/year vs 148.92 $/year 2.1x lower annual commercial energy cost
Much lower annual home energy cost 19.27 $/year vs 40.95 $/year 2.1x lower annual home energy cost
Front view of Intel Itanium 9550

Reasons to consider the
Intel Itanium 9550

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Much more l3 cache 32 MB vs 4 MB 8x more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly higher clock speed 2.4 GHz vs 2.13 GHz Around 15% higher clock speed
Much more l3 cache per core 8 MB/core vs 1 MB/core 8x more l3 cache per core
Much 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
More threads 8 vs 4 Twice as many threads
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Newer Nov, 2012 vs Mar, 2009 Release date over 3 years later

Features Key features of the Xeon E5506  vs Itanium 9550 

clock speed

Xeon E5506
2.13 GHz
Itanium 9550
2.4 GHz

L2 cache

L3 cache

TDP

Specifications Full list of technical specs

summary

Xeon E5506  vs
Itanium 9550 
Clock speed 2.13 GHz 2.4 GHz
Cores Quad core Quad core
Socket type
LGA 1366
LGA 1248

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 170W
Annual home energy cost 19.27 $/year 40.95 $/year
Annual commercial energy cost 70.08 $/year 148.92 $/year
Typical power consumption 65W 138.13W

memory controller

Memory controller Built-in Built-in
Supports ECC Yes Yes

details

Xeon E5506  vs
Itanium 9550 
Threads 4 8
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 4 MB 32 MB
L3 cache per core 1 MB/core 8 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 2 8

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 QPI QPI
Number of links 2 1
Data rate 38,400 MB/s 25,600 MB/s
Transfer rate 4,800 MT/s 6,400 MT/s
Clock speed 2,400 MHz 3,200 MHz
Intel Xeon E5506
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Intel Itanium 9550
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