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Differences What are the advantages of each

Front view of Intel Atom Z670

Reasons to consider the
Intel Atom Z670

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Front view of Intel Atom Z540

Reasons to consider the
Intel Atom Z540

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Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines

Benchmarks Real world tests of Atom Z670 vs Z540

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

Atom Z670
18.9 MB/s
Atom Z540
29.5 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Atom Z670  vs
Z540 
Clock speed 1.5 GHz 1.86 GHz
Cores Single core Single core

features

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

power consumption

TDP 3W 2.4W
Annual home energy cost 0.72 $/year 0.58 $/year
Performance per watt 4.74 pt/W 6.42 pt/W
Typical power consumption 2.44W 1.95W

details

Atom Z670  vs
Z540 
Architecture x86 x86
Threads 2 2
L2 cache 0.5 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Voltage range 1.11 - 1.5V 0.75 - 1.1V

overclocking

Overclocked clock speed 1.5 GHz 1.87 GHz
Overclocked clock speed (Water) 1.5 GHz 1.87 GHz
Overclocked clock speed (Air) 1.5 GHz 1.87 GHz

integrated graphics

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

bus

Architecture FSB FSB
Number of links 1 1
Intel Atom Z670
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Intel Atom Z540
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