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Front view of Intel Atom Z3740

Intel Atom Z3740

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Celeron N2805

Reasons to consider the
Intel Celeron N2805

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Slightly higher clock speed 1.46 GHz vs 1.33 GHz Around 10% higher clock speed
Slightly better overclocked clock speed (Water) 1.46 GHz vs 1.33 GHz Around 10% better overclocked clock speed (Water)
Front view of Intel Atom Z3740

Reasons to consider the
Intel Atom Z3740

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Much better geekbench 3 AES single core score 307,700 MB/s vs 34,400 MB/s Around 9x better geekbench 3 AES single core score
Much better 3DMark06 CPU score 34 vs 16.7 More than 2x better 3DMark06 CPU score
Much better performance per watt 73.77 pt/W vs 8.49 pt/W Around 8.8x better performance per watt
Much better performance per dollar 4.61 pt/$ vs 0.34 pt/$ More than 13.5x better performance per dollar
Much better geekbench 2 (32-bit) score 2,448 vs 984 Around 2.5x better geekbench 2 (32-bit) score
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
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Newer Oct, 2013 vs Jul, 2013 Release date 3 months later

Benchmarks Real world tests of Celeron N2805 vs Atom Z3740

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

Celeron N2805
34,400 MB/s
Atom Z3740
307,700 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

3D Mark 06 (CPU)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Celeron N2805  vs
Atom Z3740 
Clock speed 1.46 GHz 1.33 GHz
Cores Dual core Quad core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
EM64T
SSE
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 4.3W 2W
Annual home energy cost 1.04 $/year 0.48 $/year
Annual commercial energy cost 3.77 $/year 1.75 $/year
Performance per watt 8.49 pt/W 73.77 pt/W
Typical power consumption 3.49W 1.63W

bus

Architecture FSB FSB
Number of links 1 1

details

Celeron N2805  vs
Atom Z3740 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 1 MB 2 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.46 GHz 1.55 GHz
Overclocked clock speed (Water) 1.46 GHz 1.33 GHz
Overclocked clock speed (Air) 1.46 GHz 1.55 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics HD (Ivy Bridge)
GPU clock speed 313 MHz 311 MHz
Turbo clock speed 667 MHz 667 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1066
DDR3
DDR3L-1066
Channels Single Channel Dual Channel
Maximum bandwidth 6,400 MB/s 17,066.66 MB/s
Maximum memory size 4,096 MB 4,096 MB
Intel Celeron N2805
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Intel Atom Z3740
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