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Differences What are the advantages of each

Front view of Intel Xeon E7420

Reasons to consider the
Intel Xeon E7420

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Supports more CPUs in SMP configuration 32 vs 1 31 supports more CPUs in SMP configuration
Much more l2 cache 8 MB vs 3 MB Around 2.8x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher clock speed 2.13 GHz vs 1.4 GHz More than 50% higher clock speed
Much more l2 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l2 cache per core
More cores 4 vs 2 Twice as many cores; run more applications at once
Better overclocked clock speed (Air) 2.13 GHz vs 1.54 GHz Around 40% better overclocked clock speed (Air)
More threads 4 vs 2 Twice as many threads
Better overclocked clock speed (Water) 2.13 GHz vs 1.4 GHz More than 50% better overclocked clock speed (Water)
Front view of Intel Core2 Duo SU9400

Reasons to consider the
Intel Core2 Duo SU9400

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Much lower typical power consumption 8.13W vs 73.13W 9x lower typical power consumption
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much lower annual home energy cost 2.41 $/year vs 21.68 $/year 9x lower annual home energy cost
Much lower annual commercial energy cost 8.76 $/year vs 78.84 $/year 9x lower annual commercial energy cost

Features Key features of the Xeon E7420  vs Core2 Duo SU9400 

clock speed

Xeon E7420
2.13 GHz

L2 cache

overclocked clock speed (air)

Xeon E7420
2.13 GHz
Core2 Duo SU9400
1.54 GHz

overclocked clock speed (water)

Xeon E7420
2.13 GHz

Specifications Full list of technical specs

summary

Xeon E7420  vs
Core2 Duo SU9400 
Clock speed 2.13 GHz 1.4 GHz
Cores Quad core Dual core
Socket type
604
BGA 956

features

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

power consumption

TDP 90W 10W
Annual home energy cost 21.68 $/year 2.41 $/year
Annual commercial energy cost 78.84 $/year 8.76 $/year
Typical power consumption 73.13W 8.13W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,066 MHz 800 MHz

details

Xeon E7420  vs
Core2 Duo SU9400 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 8 MB 3 MB
L2 cache per core 2 MB/core 1.5 MB/core
Manufacture process 45 nm 45 nm
Transistor count 1,900,000,000 410,000,000
Max CPUs 32 1
Clock multiplier 8 7
Voltage range 0.9 - 1.45V 1.05 - 1.15V

overclocking

Overclocked clock speed 2.13 GHz 1.54 GHz
Overclocked clock speed (Water) 2.13 GHz 1.4 GHz
Overclocked clock speed (Air) 2.13 GHz 1.54 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 E7420
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Intel Core2 Duo SU9400
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