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Differences What are the advantages of each

Front view of Intel Xeon L5530

Reasons to consider the
Intel Xeon L5530

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Significantly higher clock speed 2.4 GHz vs 2.13 GHz Around 15% higher clock speed
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 8 vs 2 6 more threads
Newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly better overclocked clock speed (Air) 2.4 GHz vs 2.13 GHz Around 15% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 2.4 GHz vs 2.13 GHz Around 15% better overclocked clock speed (Water)
Newer Aug, 2009 vs Dec, 2006 Release date over 2 years later
Front view of Intel Xeon 5138

Reasons to consider the
Intel Xeon 5138

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Much more l2 cache 4 MB vs 1 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 2 MB/core vs 0.25 MB/core 8x more l2 cache per core
Lower typical power consumption 28.44W vs 48.75W More than 40% lower typical power consumption
Lower annual commercial energy cost 30.66 $/year vs 52.56 $/year More than 40% lower annual commercial energy cost
Lower annual home energy cost 8.43 $/year vs 14.45 $/year More than 40% lower annual home energy cost

Features Key features of the Xeon L5530  vs 5138 

clock speed

Xeon L5530
2.4 GHz
Xeon 5138
2.13 GHz

L2 cache

Xeon L5530
1 MB
Xeon 5138
4 MB

overclocked clock speed (air)

Xeon L5530
2.4 GHz
Xeon 5138
2.13 GHz

overclocked clock speed (water)

Xeon L5530
2.4 GHz
Xeon 5138
2.13 GHz

TDP

Specifications Full list of technical specs

summary

Xeon L5530  vs
5138 
Clock speed 2.4 GHz 2.13 GHz
Cores Quad core Dual 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 60W 35W
Annual home energy cost 14.45 $/year 8.43 $/year
Annual commercial energy cost 52.56 $/year 30.66 $/year
Typical power consumption 48.75W 28.44W

bus

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

details

Xeon L5530  vs
5138 
Architecture x86-64 x86-64
Threads 8 2
L2 cache 1 MB 4 MB
L2 cache per core 0.25 MB/core 2 MB/core
Manufacture process 45 nm 65 nm
Transistor count 731,000,000 291,000,000
Max CPUs 2 2
Voltage range 0.75 - 1.35V 1 - 1.5V
Operating temperature Unknown - 70°C Unknown - 70.8°C

overclocking

Overclocked clock speed 2.4 GHz 2.13 GHz
Overclocked clock speed (Water) 2.4 GHz 2.13 GHz
Overclocked clock speed (Air) 2.4 GHz 2.13 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 L5530
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Intel Xeon 5138
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