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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 4 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 4 vs 2 Twice as many cores; run more applications at once
Much newer manufacturing process 45 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 65W vs 134.06W 2.1x lower typical power consumption
Much more l2 cache per core 3 MB/core vs 2 MB/core 50% more l2 cache per core
Much better overclocked clock speed (Air) 3.83 GHz vs 3 GHz Around 30% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.1 GHz vs 3 GHz More than 35% better overclocked clock speed (Water)
Much lower annual commercial energy cost 70.08 $/year vs 144.54 $/year 2.1x lower annual commercial energy cost
Much lower annual home energy cost 19.27 $/year vs 39.75 $/year 2.1x lower annual home energy cost
Newer Nov, 2007 vs Nov, 2005 Release date over 2 years later
Front view of Intel Xeon 7040

Reasons to consider the
Intel Xeon 7040

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Supports more CPUs in SMP configuration 32 vs 2 30 supports more CPUs in SMP configuration

Features Key features of the Xeon E5450  vs 7040 

clock speed

Xeon E5450
3 GHz
Xeon 7040
3 GHz

L2 cache

Xeon E5450
12 MB
Xeon 7040
4 MB

overclocked clock speed (air)

Xeon E5450
3.83 GHz
Xeon 7040
3 GHz

overclocked clock speed (water)

Xeon E5450
4.1 GHz
Xeon 7040
3 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E5450  vs
7040 
Clock speed 3 GHz 3 GHz
Cores Quad core Dual core
Socket type
LGA 771
604

features

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

power consumption

TDP 80W 165W
Annual home energy cost 19.27 $/year 39.75 $/year
Annual commercial energy cost 70.08 $/year 144.54 $/year
Typical power consumption 65W 134.06W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,333 MHz 667 MHz

details

Xeon E5450  vs
7040 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 12 MB 4 MB
L2 cache per core 3 MB/core 2 MB/core
Manufacture process 45 nm 90 nm
Transistor count 820,000,000 230,000,000
Max CPUs 2 32
Clock multiplier 9 18
Voltage range 0.85 - 1.35V 1.26 - 1.41V
Operating temperature Unknown - 67°C Unknown - 76°C

overclocking

Overclocked clock speed 3.83 GHz 3 GHz
Overclocked clock speed (Water) 4.1 GHz 3 GHz
Overclocked clock speed (Air) 3.83 GHz 3 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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Intel Xeon 7040
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