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Differences What are the advantages of each

Front view of Intel Pentium D 820

Reasons to consider the
Intel Pentium D 820

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Much better geekbench 3 AES single core score 100,200 MB/s vs 26,400 MB/s More than 3.8x better geekbench 3 AES single core score
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 2.8 GHz vs 1.66 GHz Around 70% higher clock speed
Much better overclocked clock speed (Air) 3.52 GHz vs 1.67 GHz More than 2x better overclocked clock speed (Air)
Much better performance per dollar 1.2 pt/$ vs 0.61 pt/$ Around 2x better performance per dollar
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Better geekbench 3 Multi-Core score 1,378 vs 559 Around 2.5x better geekbench 3 Multi-Core score
Much better overclocked clock speed (Water) 4.25 GHz vs 1.67 GHz More than 2.5x better overclocked clock speed (Water)
More cores 2 vs 1 Twice as many cores; run more applications at once
Front view of Intel Atom D410

Reasons to consider the
Intel Atom D410

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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 8.13W vs 77.19W 9.5x lower typical power consumption
Newer Jan, 2010 vs Apr, 2005 Release date over 4 years later
Much lower annual home energy cost 2.41 $/year vs 22.89 $/year 9.5x lower annual home energy cost
Much lower annual commercial energy cost 8.76 $/year vs 83.22 $/year 9.5x lower annual commercial energy cost
Better performance per watt 2.62 pt/W vs 0.94 pt/W More than 2.8x better performance per watt

Benchmarks Real world tests of Pentium D 820 vs Atom D410

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 D 820
100,200 MB/s
Atom D410
26,400 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

Specifications Full list of technical specs

summary

Pentium D 820  vs
Atom D410 
Clock speed 2.8 GHz 1.66 GHz
Cores Dual core Single core

features

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

power consumption

TDP 95W 10W
Annual home energy cost 22.89 $/year 2.41 $/year
Annual commercial energy cost 83.22 $/year 8.76 $/year
Performance per watt 0.94 pt/W 2.62 pt/W
Typical power consumption 77.19W 8.13W

bus

Architecture FSB DMI
Number of links 1 1

details

Pentium D 820  vs
Atom D410 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 2 MB 0.5 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 90 nm 45 nm
Transistor count 230,000,000 123,000,000
Max CPUs 1 1
Voltage range 1.2 - 1.4V 0.8 - 1.18V

overclocking

Overclocked clock speed 3.52 GHz 1.67 GHz
Overclocked clock speed (Water) 4.25 GHz 1.67 GHz
Overclocked clock speed (Air) 3.52 GHz 1.67 GHz

integrated graphics

GPU None GPU
Label N/A Integrated

memory controller

Memory controller Built-in Built-in
Supports ECC No No
Intel Pentium D 820
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Intel Atom D410
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