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Differences What are the advantages of each

Front view of Intel Pentium 4 640

Reasons to consider the
Intel Pentium 4 640

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Significantly higher clock speed 3.2 GHz vs 2.4 GHz Around 35% higher clock speed
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
Much more l2 cache per core 2 MB/core vs 1 MB/core 2x more l2 cache per core
Front view of AMD Opteron 250

Reasons to consider the
AMD Opteron 250

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Much lower typical power consumption 2.44W vs 68.25W 28x lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual commercial energy cost 2.63 $/year vs 73.58 $/year 28x lower annual commercial energy cost
Much lower annual home energy cost 0.72 $/year vs 20.24 $/year 28x lower annual home energy cost
Higher Maximum operating temperature 71 °C vs 66.6 °C More than 5% higher Maximum operating temperature

Features Key features of the Pentium 4 640  vs Opteron 250 

clock speed

Pentium 4 640
3.2 GHz
Opteron 250
2.4 GHz

L2 cache

Specifications Full list of technical specs

summary

Pentium 4 640  vs
Opteron 250 
Clock speed 3.2 GHz 2.4 GHz
Cores Single core Single core
Socket type
LGA 775
940

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

details

Pentium 4 640  vs
Opteron 250 
Threads 2 1
L2 cache 2 MB 1 MB
L2 cache per core 2 MB/core 1 MB/core
Manufacture process 90 nm 90 nm
Max CPUs 1 2
Operating temperature Unknown - 66.6°C 0 - 71°C

power consumption

TDP 84W 3W
Annual home energy cost 20.24 $/year 0.72 $/year
Annual commercial energy cost 73.58 $/year 2.63 $/year
Typical power consumption 68.25W 2.44W
Intel Pentium 4 640
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AMD Opteron 250
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