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Differences What are the advantages of each

Front view of Intel Pentium 4 620

Reasons to consider the
Intel Pentium 4 620

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Much higher clock speed 2.8 GHz vs 1.33 GHz More than 2x higher clock speed
Much more l2 cache per core 2 MB/core vs 0.5 MB/core 4x more l2 cache per core
Much better overclocked clock speed (Air) 3.33 GHz vs 1.63 GHz More than 2x better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 2.8 GHz vs 1.83 GHz Around 55% better overclocked clock speed (Water)
Front view of Intel Atom Z3735F

Reasons to consider the
Intel Atom Z3735F

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Much newer manufacturing process 22 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 1.79W vs 68.25W 38.2x 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
More cores 4 vs 1 3 more cores; run more applications at once
Significantly higher Maximum operating temperature 90 °C vs 67.7 °C Around 35% higher Maximum operating temperature
Much lower annual home energy cost 0.53 $/year vs 20.24 $/year 38.2x lower annual home energy cost
Much lower annual commercial energy cost 1.93 $/year vs 73.58 $/year 38.2x lower annual commercial energy cost
More threads 4 vs 2 Twice as many threads

Features Key features of the Pentium 4 620  vs Atom Z3735F 

clock speed

Pentium 4 620
2.8 GHz
Atom Z3735F
1.33 GHz

L2 cache

overclocked clock speed (air)

Pentium 4 620
3.33 GHz
Atom Z3735F
1.63 GHz

overclocked clock speed (water)

Pentium 4 620
2.8 GHz
Atom Z3735F
1.83 GHz

TDP

Specifications Full list of technical specs

summary

Pentium 4 620  vs
Atom Z3735F 
Clock speed 2.8 GHz 1.33 GHz
Cores Single core Quad core
Socket type
LGA 775
BGA 592

features

Has a NX bit Yes Yes
Has virtualization support No Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
EM64T
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling No Yes

power consumption

TDP 84W 2.2W
Annual home energy cost 20.24 $/year 0.53 $/year
Annual commercial energy cost 73.58 $/year 1.93 $/year
Typical power consumption 68.25W 1.79W

details

Pentium 4 620  vs
Atom Z3735F 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 2 MB 2 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 90 nm 22 nm
Max CPUs 1 1
Voltage range 1.2 - 1.4V 0.4 - 1.14V
Operating temperature Unknown - 67.7°C Unknown - 90°C

overclocking

Overclocked clock speed 3.33 GHz 1.63 GHz
Overclocked clock speed (Water) 2.8 GHz 1.83 GHz
Overclocked clock speed (Air) 3.33 GHz 1.63 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics
GPU clock speed N/A 311 MHz
Turbo clock speed N/A 646 MHz

bus

Architecture FSB FSB
Number of links 1 1
Intel Pentium 4 620
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Intel Atom Z3735F
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