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Differences What are the advantages of each

Front view of Intel Xeon L5215

Reasons to consider the
Intel Xeon L5215

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Much more l2 cache 6 MB vs 0.5 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 advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Higher clock speed 1.86 GHz vs 1.6 GHz More than 15% higher clock speed
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More cores 2 vs 1 Twice as many cores; run more applications at once
Better overclocked clock speed (Water) 1.87 GHz vs 1.6 GHz More than 15% better overclocked clock speed (Water)
Front view of Intel Atom N270

Reasons to consider the
Intel Atom N270

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Lower typical power consumption 2.03W vs 16.25W 8x lower typical power consumption
Lower annual home energy cost 0.6 $/year vs 4.82 $/year 8x lower annual home energy cost
Lower annual commercial energy cost 2.19 $/year vs 17.52 $/year 8x lower annual commercial energy cost

Features Key features of the Xeon L5215  vs Atom N270 

clock speed

Xeon L5215
1.86 GHz
Atom N270
1.6 GHz

L2 cache

Xeon L5215
6 MB
Atom N270
0.5 MB

overclocked clock speed (air)

Xeon L5215
1.87 GHz
Atom N270
1.87 GHz

overclocked clock speed (water)

Xeon L5215
1.87 GHz
Atom N270
1.6 GHz

TDP

Specifications Full list of technical specs

summary

Xeon L5215  vs
Atom N270 
Clock speed 1.86 GHz 1.6 GHz
Cores Dual core Single core
Socket type
LGA 771
437

features

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

power consumption

TDP 20W 2.5W
Annual home energy cost 4.82 $/year 0.6 $/year
Annual commercial energy cost 17.52 $/year 2.19 $/year
Typical power consumption 16.25W 2.03W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,066 MHz 533 MHz

details

Xeon L5215  vs
Atom N270 
Architecture x86-64 x86
Threads 2 2
L2 cache 6 MB 0.5 MB
L2 cache per core 3 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Transistor count 410,000,000 47,000,000
Max CPUs 2 1
Clock multiplier 7 12
Voltage range 0.85 - 1.35V 0.9 - 1.16V

overclocking

Overclocked clock speed 1.87 GHz 1.87 GHz
Overclocked clock speed (Water) 1.87 GHz 1.6 GHz
Overclocked clock speed (Air) 1.87 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 L5215
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Intel Atom N270
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