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Differences What are the advantages of each

Front view of Intel Xeon L5638

Reasons to consider the
Intel Xeon L5638

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Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l3 cache 12 MB vs 8 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 6 vs 4 2 more cores; run more applications at once
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
More threads 12 vs 8 4 more threads
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Water) 3.03 GHz vs 2.13 GHz More than 40% better overclocked clock speed (Water)
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Newer Mar, 2010 vs Mar, 2009 Release date 11 months later
Front view of Intel Xeon L5518

Reasons to consider the
Intel Xeon L5518

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Much better overclocked clock speed (Air) 3.71 GHz vs 2 GHz More than 85% better overclocked clock speed (Air)
Higher clock speed 2.13 GHz vs 2 GHz More than 5% higher clock speed

Features Key features of the Xeon L5638  vs L5518 

clock speed

Xeon L5638
2 GHz
Xeon L5518
2.13 GHz

turbo clock speed

Xeon L5638
2.4 GHz
Xeon L5518
2.4 GHz

L2 cache

L3 cache

Xeon L5638
12 MB
Xeon L5518
8 MB

overclocked clock speed (air)

Xeon L5638
2 GHz
Xeon L5518
3.71 GHz

overclocked clock speed (water)

Xeon L5638
3.03 GHz
Xeon L5518
2.13 GHz

Specifications Full list of technical specs

summary

Xeon L5638  vs
L5518 
Clock speed 2 GHz 2.13 GHz
Turbo clock speed 2.4 GHz 2.4 GHz
Cores Hexa core Quad core
Socket type
LGA 1366

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 60W 60W
Annual home energy cost 14.45 $/year 14.45 $/year
Annual commercial energy cost 52.56 $/year 52.56 $/year
Typical power consumption 48.75W 48.75W

details

Xeon L5638  vs
L5518 
Threads 12 8
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 2
Voltage range 1 - 1.5V 0.75 - 1.35V
Operating temperature Unknown - 85°C Unknown - 85°C

overclocking

Overclocked clock speed 2 GHz 3.71 GHz
Overclocked clock speed (Water) 3.03 GHz 2.13 GHz
Overclocked clock speed (Air) 2 GHz 3.71 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

Architecture QPI QPI
Number of links 2 2
Data rate 46,928 MB/s 46,880 MB/s
Transfer rate 5,860 MT/s 5,860 MT/s
Clock speed 2,930 MHz 2,930 MHz
Intel Xeon L5638
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Intel Xeon L5518
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