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Differences What are the advantages of each

Front view of Intel Xeon L5508

Reasons to consider the
Intel Xeon L5508

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Much higher Maximum operating temperature 85 °C vs 72 °C Around 20% higher Maximum operating temperature
Newer Mar, 2009 vs Feb, 2008 Release date over 1 years later
Front view of Intel Xeon L5408

Reasons to consider the
Intel Xeon L5408

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Much more l2 cache 12 MB vs 1 MB 12x 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
More cores 4 vs 2 Twice as many cores; run more applications at once
Higher clock speed 2.13 GHz vs 2 GHz More than 5% higher clock speed
Much better overclocked clock speed (Air) 3.34 GHz vs 2 GHz More than 65% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.12 GHz vs 2 GHz More than 2x better overclocked clock speed (Water)

Features Key features of the Xeon L5508  vs L5408 

clock speed

Xeon L5508
2 GHz
Xeon L5408
2.13 GHz

L2 cache

Xeon L5508
1 MB
Xeon L5408
12 MB

overclocked clock speed (air)

Xeon L5508
2 GHz
Xeon L5408
3.34 GHz

overclocked clock speed (water)

Xeon L5508
2 GHz
Xeon L5408
4.12 GHz

TDP

Specifications Full list of technical specs

summary

Xeon L5508  vs
L5408 
Clock speed 2 GHz 2.13 GHz
Cores Dual core Quad core
Socket type
LGA 1366
LGA 771

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
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 38W 40W
Annual home energy cost 9.15 $/year 9.64 $/year
Annual commercial energy cost 33.29 $/year 35.04 $/year
Typical power consumption 30.88W 32.5W

bus

Architecture QPI FSB
Number of links 2 1
Clock speed 2,930 MHz 1,066 MHz

details

Xeon L5508  vs
L5408 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 12 MB
L2 cache per core 0.5 MB/core 3 MB/core
Manufacture process 45 nm 45 nm
Transistor count 731,000,000 820,000,000
Max CPUs 2 2
Voltage range 0.75 - 1.35V 0.85 - 1.35V
Operating temperature Unknown - 85°C Unknown - 72°C

overclocking

Overclocked clock speed 2 GHz 3.34 GHz
Overclocked clock speed (Water) 2 GHz 4.12 GHz
Overclocked clock speed (Air) 2 GHz 3.34 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 L5508
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Intel Xeon L5408
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