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Differences What are the advantages of each

Front view of Intel Xeon L5408

Reasons to consider the
Intel Xeon L5408

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Much more l2 cache 12 MB vs 6 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher clock speed 2.13 GHz vs 1.86 GHz Around 15% higher clock speed
More cores 4 vs 2 Twice as many cores; run more applications at once
Much better overclocked clock speed (Air) 3.34 GHz vs 1.87 GHz Around 80% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.12 GHz vs 1.87 GHz Around 2.2x better overclocked clock speed (Water)
More threads 4 vs 2 Twice as many threads
Front view of Intel Xeon L5215

Reasons to consider the
Intel Xeon L5215

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Lower typical power consumption 16.25W vs 32.5W 2x lower typical power consumption
Lower annual commercial energy cost 17.52 $/year vs 35.04 $/year 2x lower annual commercial energy cost
Lower annual home energy cost 4.82 $/year vs 9.64 $/year 2x lower annual home energy cost

Features Key features of the Xeon L5408  vs L5215 

clock speed

Xeon L5408
2.13 GHz
Xeon L5215
1.86 GHz

L2 cache

Xeon L5408
12 MB
Xeon L5215
6 MB

overclocked clock speed (air)

Xeon L5408
3.34 GHz
Xeon L5215
1.87 GHz

overclocked clock speed (water)

Xeon L5408
4.12 GHz
Xeon L5215
1.87 GHz

TDP

Specifications Full list of technical specs

summary

Xeon L5408  vs
L5215 
Clock speed 2.13 GHz 1.86 GHz
Cores Quad core Dual core
Socket type
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
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 40W 20W
Annual home energy cost 9.64 $/year 4.82 $/year
Annual commercial energy cost 35.04 $/year 17.52 $/year
Typical power consumption 32.5W 16.25W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,066 MHz 1,066 MHz

details

Xeon L5408  vs
L5215 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 12 MB 6 MB
L2 cache per core 3 MB/core 3 MB/core
Manufacture process 45 nm 45 nm
Transistor count 820,000,000 410,000,000
Max CPUs 2 2
Clock multiplier 8 7
Voltage range 0.85 - 1.35V 0.85 - 1.35V
Operating temperature Unknown - 72°C Unknown - 75°C

overclocking

Overclocked clock speed 3.34 GHz 1.87 GHz
Overclocked clock speed (Water) 4.12 GHz 1.87 GHz
Overclocked clock speed (Air) 3.34 GHz 1.87 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 L5408
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Intel Xeon L5215
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