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Differences What are the advantages of each

Front view of Intel Pentium 4 531

Reasons to consider the
Intel Pentium 4 531

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Much better geekbench 3 AES single core score 104,050 MB/s vs 33,800 MB/s More than 3x better geekbench 3 AES single core score
Much higher clock speed 3 GHz vs 1.6 GHz More than 85% 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
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 better performance per dollar 1.27 pt/$ vs 0.37 pt/$ Around 3.5x better performance per dollar
Much better overclocked clock speed (Air) 3.82 GHz vs 1.6 GHz Around 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) 4.15 GHz vs 1.6 GHz More than 2.5x better overclocked clock speed (Water)
Slightly better geekbench 3 Multi-Core score 927 vs 507 Around 85% better geekbench 3 Multi-Core score
Front view of Intel Atom E680

Reasons to consider the
Intel Atom E680

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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 3.66W vs 68.25W 18.7x 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
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much better performance per watt 6.07 pt/W vs 1.03 pt/W Around 6x better performance per watt
Newer Sep, 2010 vs Apr, 2004 Release date over 6 years later
Much lower annual home energy cost 1.08 $/year vs 20.24 $/year 18.7x lower annual home energy cost
Much lower annual commercial energy cost 3.94 $/year vs 73.58 $/year 18.7x lower annual commercial energy cost

Benchmarks Real world tests of Pentium 4 531 vs Atom E680

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Pentium 4 531
104,050 MB/s
Atom E680
33,800 MB/s

Specifications Full list of technical specs

summary

Pentium 4 531  vs
Atom E680 
Clock speed 3 GHz 1.6 GHz
Cores Single core Single core

features

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

power consumption

TDP 84W 4.5W
Annual home energy cost 20.24 $/year 1.08 $/year
Annual commercial energy cost 73.58 $/year 3.94 $/year
Performance per watt 1.03 pt/W 6.07 pt/W
Typical power consumption 68.25W 3.66W

details

Pentium 4 531  vs
Atom E680 
Architecture x86-64 x86
Threads 2 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
Clock multiplier 15 16
Voltage range 1.2 - 1.43V 0.75 - 0.9V

overclocking

Overclocked clock speed 3.82 GHz 1.6 GHz
Overclocked clock speed (Water) 4.15 GHz 1.6 GHz
Overclocked clock speed (Air) 3.82 GHz 1.6 GHz

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
Clock speed 800 MHz 2,500 MHz
Intel Pentium 4 531
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Intel Atom E680
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