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Differences What are the advantages of each

Front view of Intel Xeon E5450

Reasons to consider the
Intel Xeon E5450

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Much more l2 cache 12 MB vs 2 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 3 MB/core vs 0.5 MB/core 6x more l2 cache per core
Higher clock speed 3 GHz vs 2.9 GHz Around 5% higher clock speed
Much better overclocked clock speed (Air) 3.83 GHz vs 2.9 GHz More than 30% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.1 GHz vs 2.9 GHz More than 40% better overclocked clock speed (Water)
Front view of AMD Opteron 2389

Reasons to consider the
AMD Opteron 2389

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Newer Feb, 2009 vs Nov, 2007 Release date over 1 years later

Features Key features of the Xeon E5450  vs Opteron 2389 

clock speed

Xeon E5450
3 GHz
Opteron 2389
2.9 GHz

L2 cache

overclocked clock speed (air)

Xeon E5450
3.83 GHz
Opteron 2389
2.9 GHz

overclocked clock speed (water)

Xeon E5450
4.1 GHz
Opteron 2389
2.9 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E5450  vs
Opteron 2389 
Clock speed 3 GHz 2.9 GHz
Cores Quad core Quad core
Socket type
LGA 771
F

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
SSE4.1
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 75W
Annual home energy cost 19.27 $/year 18.07 $/year
Annual commercial energy cost 70.08 $/year 65.7 $/year
Typical power consumption 65W 60.94W

bus

Architecture FSB HyperTransport 3.0
Clock speed 1,333 MHz 2,200 MHz

details

Xeon E5450  vs
Opteron 2389 
Threads 4 4
L2 cache 12 MB 2 MB
L2 cache per core 3 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 2 2
Clock multiplier 9 14
Voltage range 0.85 - 1.35V 1.32 - UnknownV
Operating temperature Unknown - 67°C 0 - 55°C

overclocking

Overclocked clock speed 3.83 GHz 2.9 GHz
Overclocked clock speed (Water) 4.1 GHz 2.9 GHz
Overclocked clock speed (Air) 3.83 GHz 2.9 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 E5450
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AMD Opteron 2389
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