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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 8 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
More l3 cache 16 MB vs 8 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 16 vs 8 Twice as many cores; run more applications at once
Much lower typical power consumption 69.06W vs 101.56W More than 30% lower typical power consumption
More threads 16 vs 8 Twice as many threads
Much lower annual home energy cost 20.48 $/year vs 30.11 $/year More than 30% lower annual home energy cost
Much lower annual commercial energy cost 74.46 $/year vs 109.5 $/year More than 30% lower annual commercial energy cost
Front view of AMD FX 8320

Reasons to consider the
AMD FX 8320

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Much higher clock speed 3.5 GHz vs 1.8 GHz Around 95% higher clock speed
Much better overclocked clock speed (Air) 4.56 GHz vs 2.26 GHz More than 2x better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.75 GHz vs 1.8 GHz Around 2.8x better overclocked clock speed (Water)

Features Key features of the Opteron 6266 HE  vs FX 8320 

clock speed

Opteron 6266 HE
1.8 GHz
FX 8320
3.5 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Opteron 6266 HE
2.26 GHz
FX 8320
4.56 GHz

overclocked clock speed (water)

Opteron 6266 HE
1.8 GHz
FX 8320
4.75 GHz

TDP

Specifications Full list of technical specs

summary

Opteron 6266 HE  vs
FX 8320 
Clock speed 1.8 GHz 3.5 GHz
Cores 16 core Octa core
Socket type
G34
AM3+

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
XOP
AVX
SSE3
SSE
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
TBM

bus

Clock speed 3,200 MHz 2,600 MHz

details

Opteron 6266 HE  vs
FX 8320 
Threads 16 8
L2 cache 16 MB 8 MB
L2 cache per core 1 MB/core 1 MB/core
L3 cache 16 MB 8 MB
L3 cache per core 1 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 4 1

overclocking

Overclocked clock speed 2.26 GHz 4.56 GHz
Overclocked clock speed (Water) 1.8 GHz 4.75 GHz
PassMark (Overclocked) 1,254.6 9,317
Overclocked clock speed (Air) 2.26 GHz 4.56 GHz

power consumption

TDP 85W 125W
Annual home energy cost 20.48 $/year 30.11 $/year
Annual commercial energy cost 74.46 $/year 109.5 $/year
Typical power consumption 69.06W 101.56W
AMD Opteron 6266 HE
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AMD FX 8320
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