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Differences What are the advantages of each

Front view of Intel Atom Z3740D

Reasons to consider the
Intel Atom Z3740D

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Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 4 vs 2 Twice as many cores; run more applications at once
Newer Jul, 2013 vs Dec, 2012 Release date 6 months later
Front view of Intel Atom S1289

Reasons to consider the
Intel Atom S1289

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Higher clock speed 2 GHz vs 1.33 GHz More than 50% higher clock speed
Slightly better overclocked clock speed (Air) 2 GHz vs 1.82 GHz More than 10% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 2 GHz vs 1.33 GHz More than 50% better overclocked clock speed (Water)

Features Key features of the Atom Z3740D  vs S1289 

clock speed

Atom Z3740D
1.33 GHz
Atom S1289
2 GHz

L2 cache

overclocked clock speed (air)

Atom Z3740D
1.82 GHz
Atom S1289
2 GHz

overclocked clock speed (water)

Atom Z3740D
1.33 GHz
Atom S1289
2 GHz

Specifications Full list of technical specs

summary

Atom Z3740D  vs
S1289 
Clock speed 1.33 GHz 2 GHz
Cores Quad core Dual core

features

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

power consumption

Typical power consumption N/A 11.46W

bus

Architecture FSB FSB
Number of links 1 1

details

Atom Z3740D  vs
S1289 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 2 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.82 GHz 2 GHz
Overclocked clock speed (Water) 1.33 GHz 2 GHz
Overclocked clock speed (Air) 1.82 GHz 2 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics N/A
GPU clock speed 313 MHz N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3
Channels Single Channel Single Channel
Supports ECC No Yes
Maximum bandwidth 6,400 MB/s 10,666.66 MB/s
Maximum memory size 2,048 MB 8,192 MB
Intel Atom Z3740D
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Intel Atom S1289
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