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Differences What are the advantages of each

Front view of Intel Xeon E5-2689

Reasons to consider the
Intel Xeon E5-2689

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Much more l3 cache 20 MB vs 3 MB Around 6.8x more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly 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 cores 8 vs 2 6 more cores; run more applications at once
More threads 16 vs 4 12 more threads
Higher clock speed 2.6 GHz vs 2.4 GHz Around 10% higher clock speed
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly more l3 cache per core 2.5 MB/core vs 1.5 MB/core More than 65% more l3 cache per core
Front view of Intel Core i3 3120ME

Reasons to consider the
Intel Core i3 3120ME

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Much lower typical power consumption 28.44W vs 93.44W 3.3x lower typical power consumption
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower annual home energy cost 8.43 $/year vs 27.7 $/year 3.3x lower annual home energy cost
Much lower annual commercial energy cost 30.66 $/year vs 100.74 $/year 3.3x lower annual commercial energy cost
Newer Jul, 2012 vs Mar, 2012 Release date 3 months later

Features Key features of the Xeon E5-2689  vs Core i3 3120ME 

clock speed

Xeon E5-2689
2.6 GHz
Core i3 3120ME
2.4 GHz

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon E5-2689  vs
Core i3 3120ME 
Clock speed 2.6 GHz 2.4 GHz
Cores Octa core Dual core
Socket type
LGA 2011
BGA 1023
rPGA 988B

features

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

details

Xeon E5-2689  vs
Core i3 3120ME 
Threads 16 4
L2 cache 2 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 20 MB 3 MB
L3 cache per core 2.5 MB/core 1.5 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 2 1

power consumption

TDP 115W 35W
Annual home energy cost 27.7 $/year 8.43 $/year
Annual commercial energy cost 100.74 $/year 30.66 $/year
Typical power consumption 93.44W 28.44W

bus

Architecture QPI DMI
Number of links 2 1
Transfer rate 8,000 MT/s 5,000 MT/s
Intel Xeon E5-2689
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Intel Core i3 3120ME
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