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Differences What are the advantages of each

Front view of AMD Opteron 42MX HE

Reasons to consider the
AMD Opteron 42MX HE

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Much more l2 cache 8 MB vs 4 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
More l3 cache 8 MB vs 4 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
More cores 8 vs 4 Twice as many cores; run more applications at once
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More threads 8 vs 4 Twice as many threads
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost
Front view of AMD FX 4300

Reasons to consider the
AMD FX 4300

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Much higher clock speed 3.8 GHz vs 2.2 GHz Around 75% higher clock speed
Much better overclocked clock speed (Air) 4.48 GHz vs 2.2 GHz More than 2x better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.98 GHz vs 2.2 GHz More than 2.2x better overclocked clock speed (Water)
Newer Oct, 2012 vs Nov, 2011 Release date 11 months later

Features Key features of the Opteron 42MX HE  vs FX 4300 

clock speed

Opteron 42MX HE
2.2 GHz
FX 4300
3.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Opteron 42MX HE
2.2 GHz
FX 4300
4.48 GHz

overclocked clock speed (water)

Opteron 42MX HE
2.2 GHz
FX 4300
4.98 GHz

TDP

Specifications Full list of technical specs

summary

Opteron 42MX HE  vs
FX 4300 
Clock speed 2.2 GHz 3.8 GHz
Cores Octa core Quad core
Socket type
C32
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

details

Opteron 42MX HE  vs
FX 4300 
Threads 8 4
L2 cache 8 MB 4 MB
L2 cache per core 1 MB/core 1 MB/core
L3 cache 8 MB 4 MB
L3 cache per core 1 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 1
Clock multiplier 16 20

overclocking

Overclocked clock speed 2.2 GHz 4.48 GHz
Overclocked clock speed (Water) 2.2 GHz 4.98 GHz
Overclocked clock speed (Air) 2.2 GHz 4.48 GHz

power consumption

TDP 65W 95W
Annual home energy cost 15.66 $/year 22.89 $/year
Annual commercial energy cost 56.94 $/year 83.22 $/year
Typical power consumption 52.81W 77.19W
AMD Opteron 42MX HE
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AMD FX 4300
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