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Differences What are the advantages of each

Front view of Intel Pentium E2140

Reasons to consider the
Intel Pentium E2140

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Much newer manufacturing process 65 nm vs 130 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 1.6 GHz vs 1.4 GHz Around 15% higher clock speed
Much better overclocked clock speed (Air) 3 GHz vs 1.4 GHz Around 2.2x better overclocked clock speed (Air)
Newer Apr, 2007 vs Feb, 2004 Release date over 3 years later
More cores 2 vs 1 Twice as many cores; run more applications at once
Much better overclocked clock speed (Water) 3.06 GHz vs 1.4 GHz Around 2.2x better overclocked clock speed (Water)
Front view of AMD Opteron 240 EE

Reasons to consider the
AMD Opteron 240 EE

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Significantly lower typical power consumption 24.38W vs 52.81W 2.2x lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Significantly lower annual home energy cost 7.23 $/year vs 15.66 $/year 2.2x lower annual home energy cost
Significantly lower annual commercial energy cost 26.28 $/year vs 56.94 $/year 2.2x lower annual commercial energy cost

Features Key features of the Pentium E2140  vs Opteron 240 EE 

clock speed

Pentium E2140
1.6 GHz
Opteron 240 EE
1.4 GHz

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Pentium E2140
3.06 GHz
Opteron 240 EE
1.4 GHz

Specifications Full list of technical specs

summary

Pentium E2140  vs
Opteron 240 EE 
Clock speed 1.6 GHz 1.4 GHz
Cores Dual core Single core
Socket type
LGA 775
940

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!
Supplemental SSE3

details

Pentium E2140  vs
Opteron 240 EE 
Threads 2 1
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 1 MB/core
Manufacture process 65 nm 130 nm
Max CPUs 1 2
Clock multiplier 8 7
Voltage range 0.85 - 1.5V 1.1 - UnknownV

overclocking

Overclocked clock speed 3 GHz 1.4 GHz
Overclocked clock speed (Water) 3.06 GHz 1.4 GHz
Overclocked clock speed (Air) 3 GHz 1.4 GHz

power consumption

TDP 65W 30W
Annual home energy cost 15.66 $/year 7.23 $/year
Annual commercial energy cost 56.94 $/year 26.28 $/year
Typical power consumption 52.81W 24.38W
Intel Pentium E2140
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AMD Opteron 240 EE
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