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Differences What are the advantages of each

Front view of Intel Xeon L5420

Reasons to consider the
Intel Xeon L5420

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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
Much lower typical power consumption 40.63W vs 85.31W 2.1x lower typical power consumption
Much better overclocked clock speed (Air) 3.67 GHz vs 3.29 GHz More than 10% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.85 GHz vs 2.8 GHz Around 40% better overclocked clock speed (Water)
Much lower annual commercial energy cost 43.8 $/year vs 91.98 $/year 2.1x lower annual commercial energy cost
Much lower annual home energy cost 12.04 $/year vs 25.29 $/year 2.1x lower annual home energy cost
Front view of AMD Opteron 8386 SE

Reasons to consider the
AMD Opteron 8386 SE

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Much higher clock speed 2.8 GHz vs 2.5 GHz More than 10% higher clock speed
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Newer Jan, 2009 vs Mar, 2008 Release date 10 months later

Features Key features of the Xeon L5420  vs Opteron 8386 SE 

clock speed

Xeon L5420
2.5 GHz
Opteron 8386 SE
2.8 GHz

L2 cache

overclocked clock speed (air)

Xeon L5420
3.67 GHz
Opteron 8386 SE
3.29 GHz

overclocked clock speed (water)

Xeon L5420
3.85 GHz
Opteron 8386 SE
2.8 GHz

Specifications Full list of technical specs

summary

Xeon L5420  vs
Opteron 8386 SE 
Clock speed 2.5 GHz 2.8 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 50W 105W
Annual home energy cost 12.04 $/year 25.29 $/year
Annual commercial energy cost 43.8 $/year 91.98 $/year
Typical power consumption 40.63W 85.31W

details

Xeon L5420  vs
Opteron 8386 SE 
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 8
Clock multiplier 7 14
Voltage range 0.85 - 1.35V 1.32 - UnknownV

overclocking

Overclocked clock speed 3.67 GHz 3.29 GHz
Overclocked clock speed (Water) 3.85 GHz 2.8 GHz
Overclocked clock speed (Air) 3.67 GHz 3.29 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

bus

Clock speed 1,333 MHz 2,200 MHz
Intel Xeon L5420
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AMD Opteron 8386 SE
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