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Differences What are the advantages of each

Front view of AMD Opteron 6266 HE

Reasons to consider the
AMD Opteron 6266 HE

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Much more l2 cache 16 MB vs 1 MB 16x more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 16 vs 2 14 more cores; run more applications at once
Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
More threads 16 vs 2 14 more threads
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Front view of AMD Athlon 64 X2 5000+

Reasons to consider the
AMD Athlon 64 X2 5000+

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Significantly higher clock speed 2.6 GHz vs 1.8 GHz Around 45% higher clock speed
Significantly better overclocked clock speed (Air) 3.13 GHz vs 2.26 GHz Around 40% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.39 GHz vs 1.8 GHz Around 90% better overclocked clock speed (Water)

Features Key features of the Opteron 6266 HE  vs Athlon 64 X2 5000+ 

clock speed

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Opteron 6266 HE  vs
Athlon 64 X2 5000+ 
Clock speed 1.8 GHz 2.6 GHz
Cores 16 core Dual core
Socket type
G34
AM2

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
SSE3
SSE
3DNow!
Supplemental SSE3
AES

details

Opteron 6266 HE  vs
Athlon 64 X2 5000+ 
Threads 16 2
L2 cache 16 MB 1 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 4 1

overclocking

Overclocked clock speed 2.26 GHz 3.13 GHz
Overclocked clock speed (Water) 1.8 GHz 3.39 GHz
PassMark (Overclocked) 1,254.6 1,518.5
Overclocked clock speed (Air) 2.26 GHz 3.13 GHz

power consumption

TDP 85W 89W
Annual home energy cost 20.48 $/year 21.44 $/year
Annual commercial energy cost 74.46 $/year 77.96 $/year
Typical power consumption 69.06W 72.31W
AMD Opteron 6266 HE
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AMD Athlon 64 X2 5000+
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