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Differences What are the advantages of each

Front view of Intel Xeon L5318

Reasons to consider the
Intel Xeon L5318

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Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Significantly lower typical power consumption 32.5W vs 52.81W Around 40% lower typical power consumption
Significantly lower annual home energy cost 9.64 $/year vs 15.66 $/year Around 40% lower annual home energy cost
Significantly lower annual commercial energy cost 35.04 $/year vs 56.94 $/year Around 40% lower annual commercial energy cost
Front view of Intel Core2 Quad Q9450S

Reasons to consider the
Intel Core2 Quad Q9450S

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Much more l2 cache 12 MB vs 8 MB 50% more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher clock speed 2.67 GHz vs 1.6 GHz More than 65% higher clock speed
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l2 cache per core 3 MB/core vs 2 MB/core 50% more l2 cache per core
Significantly better overclocked clock speed (Air) 2.67 GHz vs 1.6 GHz More than 65% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 2.67 GHz vs 1.6 GHz More than 65% better overclocked clock speed (Water)
Newer Jan, 2008 vs Jan, 2007 Release date a year later

Features Key features of the Xeon L5318  vs Core2 Quad Q9450S 

clock speed

Xeon L5318
1.6 GHz

L2 cache

overclocked clock speed (air)

Xeon L5318
1.6 GHz

overclocked clock speed (water)

Xeon L5318
1.6 GHz

Specifications Full list of technical specs

summary

Xeon L5318  vs
Core2 Quad Q9450S 
Clock speed 1.6 GHz 2.67 GHz
Cores Quad core Quad core
Socket type
LGA 771
LGA 775

features

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

bus

Clock speed 1,066 MHz 1,333 MHz

details

Xeon L5318  vs
Core2 Quad Q9450S 
Threads 4 4
L2 cache 8 MB 12 MB
L2 cache per core 2 MB/core 3 MB/core
Manufacture process 65 nm 45 nm
Max CPUs 2 1

overclocking

Overclocked clock speed 1.6 GHz 2.67 GHz
Overclocked clock speed (Water) 1.6 GHz 2.67 GHz
Overclocked clock speed (Air) 1.6 GHz 2.67 GHz

power consumption

TDP 40W 65W
Annual home energy cost 9.64 $/year 15.66 $/year
Annual commercial energy cost 35.04 $/year 56.94 $/year
Typical power consumption 32.5W 52.81W
Intel Xeon L5318
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Intel Core2 Quad Q9450S
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