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Differences What are the advantages of each

Front view of Intel Xeon E5649

Reasons to consider the
Intel Xeon E5649

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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 9560

Reasons to consider the
Intel Itanium 9560

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Much more l3 cache 32 MB vs 12 MB Around 2.8x more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l2 cache 4 MB vs 2 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
More threads 16 vs 12 4 more threads
Much more l3 cache per core 4 MB/core vs 2 MB/core 2x more l3 cache per core
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Significantly more l2 cache per core 0.5 MB/core vs 0.33 MB/core More than 50% more l2 cache per core
Newer Nov, 2012 vs Feb, 2011 Release date over 1 years later

Features Key features of the Xeon E5649  vs Itanium 9560 

clock speed

Xeon E5649
2.53 GHz
Itanium 9560
2.53 GHz

L2 cache

L3 cache

Xeon E5649
12 MB
Itanium 9560
32 MB

TDP

Specifications Full list of technical specs

summary

Xeon E5649  vs
Itanium 9560 
Clock speed 2.53 GHz 2.53 GHz
Cores Hexa core Octa 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 E5649  vs
Itanium 9560 
Threads 12 16
L2 cache 2 MB 4 MB
L2 cache per core 0.33 MB/core 0.5 MB/core
L3 cache 12 MB 32 MB
L3 cache per core 2 MB/core 4 MB/core
Manufacture process 32 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 46,928 MB/s 25,600 MB/s
Transfer rate 5,860 MT/s 6,400 MT/s
Clock speed 2,930 MHz 3,200 MHz
Intel Xeon E5649
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Intel Itanium 9560
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