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Differences What are the advantages of each

Front view of Intel Pentium 4 520

Reasons to consider the
Intel Pentium 4 520

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Much higher clock speed 2.8 GHz vs 1.5 GHz More than 85% higher clock speed
More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Front view of Intel Atom Z670

Reasons to consider the
Intel Atom Z670

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Much newer manufacturing process 45 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 2.44W vs 68.25W 28x lower typical power consumption
Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Newer Apr, 2011 vs Nov, 2000 Release date over 10 years later
Significantly higher Maximum operating temperature 90 °C vs 67.7 °C Around 35% higher Maximum operating temperature
Much lower annual home energy cost 0.72 $/year vs 20.24 $/year 28x lower annual home energy cost
Much lower annual commercial energy cost 2.63 $/year vs 73.58 $/year 28x lower annual commercial energy cost

Benchmarks Real world tests of Pentium 4 520 vs Atom Z670

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

Specifications Full list of technical specs

summary

Pentium 4 520  vs
Atom Z670 
Clock speed 2.8 GHz 1.5 GHz
Cores Single core Single core

features

Has virtualization support No No
Supports dynamic frequency scaling No Yes

integrated graphics

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

bus

Architecture FSB FSB
Number of links 1 1

details

Pentium 4 520  vs
Atom Z670 
Architecture x86 x86
Threads 1 2
L2 cache 1 MB 0.5 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 90 nm 45 nm
Max CPUs 1 1
Voltage range 1.25 - 1.4V 1.11 - 1.5V
Operating temperature Unknown - 67.7°C Unknown - 90°C

power consumption

TDP 84W 3W
Annual home energy cost 20.24 $/year 0.72 $/year
Annual commercial energy cost 73.58 $/year 2.63 $/year
Typical power consumption 68.25W 2.44W
Intel Pentium 4 520
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Intel Atom Z670
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