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Differences What are the advantages of each

Front view of Intel Pentium 4 650

Reasons to consider the
Intel Pentium 4 650

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Much 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
Much higher clock speed 3.4 GHz vs 2.7 GHz More than 25% higher clock speed
More threads 2 vs 1 Twice as many threads
Much better overclocked clock speed (Air) 3.98 GHz vs 3.69 GHz Around 10% better overclocked clock speed (Air)
Significantly higher Maximum operating temperature 66.6 °C vs 63 °C More than 5% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.59 GHz vs 3.93 GHz More than 15% better overclocked clock speed (Water)
Front view of AMD Sempron 140

Reasons to consider the
AMD Sempron 140

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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
Much lower typical power consumption 36.56W vs 68.25W More than 45% lower typical power consumption
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much lower annual commercial energy cost 39.42 $/year vs 73.58 $/year More than 45% lower annual commercial energy cost
Much lower annual home energy cost 10.84 $/year vs 20.24 $/year More than 45% lower annual home energy cost
Newer Jul, 2009 vs Jan, 2005 Release date over 4 years later

Features Key features of the Pentium 4 650  vs Sempron 140 

clock speed

Pentium 4 650
3.4 GHz
Sempron 140
2.7 GHz

L2 cache

overclocked clock speed (air)

Pentium 4 650
3.98 GHz
Sempron 140
3.69 GHz

overclocked clock speed (water)

Pentium 4 650
4.59 GHz
Sempron 140
3.93 GHz

Specifications Full list of technical specs

summary

Pentium 4 650  vs
Sempron 140 
Clock speed 3.4 GHz 2.7 GHz
Cores Single core Single core
Socket type
LGA 775
AM3

features

Has a NX bit Yes Yes
Has virtualization support No Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 84W 45W
Annual home energy cost 20.24 $/year 10.84 $/year
Annual commercial energy cost 73.58 $/year 39.42 $/year
Typical power consumption 68.25W 36.56W

bus

Clock speed 800 MHz 2,000 MHz

details

Pentium 4 650  vs
Sempron 140 
Architecture x86-64 x86-64
Threads 2 1
L2 cache 2 MB 1 MB
L2 cache per core 2 MB/core 1 MB/core
Manufacture process 90 nm 45 nm
Max CPUs 1 1
Voltage range 1.2 - 1.4V 0.82 - 1.35V
Operating temperature Unknown - 66.6°C Unknown - 63°C

overclocking

Overclocked clock speed 3.98 GHz 3.69 GHz
Overclocked clock speed (Water) 4.59 GHz 3.93 GHz
Overclocked clock speed (Air) 3.98 GHz 3.69 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A
Intel Pentium 4 650
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AMD Sempron 140
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