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Differences What are the advantages of each

Front view of AMD Opteron 840

Reasons to consider the
AMD Opteron 840

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Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Significantly better overclocked clock speed (Air) 1.69 GHz vs 1.4 GHz More than 20% better overclocked clock speed (Air)
Front view of AMD Opteron 240 EE

Reasons to consider the
AMD Opteron 240 EE

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Much lower typical power consumption 24.38W vs 66.71W 2.7x lower typical power consumption
Much lower annual commercial energy cost 26.28 $/year vs 71.92 $/year 2.7x lower annual commercial energy cost
Much lower annual home energy cost 7.23 $/year vs 19.78 $/year 2.7x lower annual home energy cost
Newer Feb, 2004 vs Jun, 2003 Release date 7 months later

Features Key features of the Opteron 840  vs 240 EE 

clock speed

Opteron 840
1.4 GHz
Opteron 240 EE
1.4 GHz

L2 cache

overclocked clock speed (air)

Opteron 840
1.69 GHz
Opteron 240 EE
1.4 GHz

overclocked clock speed (water)

Opteron 840
1.4 GHz
Opteron 240 EE
1.4 GHz

TDP

Specifications Full list of technical specs

summary

Opteron 840  vs
240 EE 
Clock speed 1.4 GHz 1.4 GHz
Cores Single core Single core
Socket type
940

features

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

details

Opteron 840  vs
240 EE 
Threads 1 1
L2 cache 1 MB 1 MB
L2 cache per core 1 MB/core 1 MB/core
Manufacture process 130 nm 130 nm
Max CPUs 8 2
Clock multiplier 7 7
Voltage range 1.5 - UnknownV 1.1 - UnknownV

overclocking

Overclocked clock speed 1.69 GHz 1.4 GHz
Overclocked clock speed (Water) 1.4 GHz 1.4 GHz
Overclocked clock speed (Air) 1.69 GHz 1.4 GHz

power consumption

TDP 82.1W 30W
Annual home energy cost 19.78 $/year 7.23 $/year
Annual commercial energy cost 71.92 $/year 26.28 $/year
Typical power consumption 66.71W 24.38W
AMD Opteron 840
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AMD Opteron 240 EE
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