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Differences What are the advantages of each

Front view of Intel Pentium E6500

Reasons to consider the
Intel Pentium E6500

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Much more l2 cache 2 MB vs 0.5 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher clock speed 2.93 GHz vs 1.9 GHz Around 55% higher clock speed
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
Much better overclocked clock speed (Air) 3.86 GHz vs 1.5 GHz More than 2.5x better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Water) 4.33 GHz vs 1.5 GHz Around 3x better overclocked clock speed (Water)
More cores 2 vs 1 Twice as many cores; run more applications at once
Front view of Intel Atom Z625

Reasons to consider the
Intel Atom Z625

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 1.79W vs 52.81W 29.5x lower typical power consumption
Newer May, 2010 vs Jan, 2008 Release date over 2 years later
Much lower annual home energy cost 0.53 $/year vs 15.66 $/year 29.5x lower annual home energy cost
Much lower annual commercial energy cost 1.93 $/year vs 56.94 $/year 29.5x lower annual commercial energy cost

Features Key features of the Pentium E6500  vs Atom Z625 

clock speed

Pentium E6500
2.93 GHz
Atom Z625
1.9 GHz

L2 cache

Atom Z625
0.5 MB

overclocked clock speed (air)

Pentium E6500
3.86 GHz
Atom Z625
1.5 GHz

overclocked clock speed (water)

Pentium E6500
4.33 GHz
Atom Z625
1.5 GHz

TDP

Specifications Full list of technical specs

summary

Pentium E6500  vs
Atom Z625 
Clock speed 2.93 GHz 1.9 GHz
Cores Dual core Single core

features

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

power consumption

TDP 65W 2.2W
Annual home energy cost 15.66 $/year 0.53 $/year
Annual commercial energy cost 56.94 $/year 1.93 $/year
Typical power consumption 52.81W 1.79W

details

Pentium E6500  vs
Atom Z625 
Architecture x86-64 x86
Threads 2 2
L2 cache 2 MB 0.5 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Clock multiplier 11 19

overclocking

Overclocked clock speed 3.86 GHz 1.5 GHz
Overclocked clock speed (Water) 4.33 GHz 1.5 GHz
Overclocked clock speed (Air) 3.86 GHz 1.5 GHz

integrated graphics

GPU None GPU
Label N/A Integrated
GPU clock speed N/A 400 MHz

bus

Architecture FSB DMI
Number of links 1 1
Clock speed 1,066 MHz 400 MHz
Intel Pentium E6500
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Intel Atom Z625
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