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Differences What are the advantages of each

Front view of AMD FX 8350

Reasons to consider the
AMD FX 8350

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Much newer manufacturing process 32 nm vs 130 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 4 GHz vs 1.8 GHz Around 2.2x higher clock speed
Much more l2 cache 8 MB vs 1 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 8 vs 1 7 more cores; run more applications at once
More threads 8 vs 1 7 more threads
Much better PassMark score 9,134 vs 433 More than 21x better PassMark score
Much better PassMark (Single core) score 1,525 vs 663 More than 2.2x better PassMark (Single core) score
Much better overclocked clock speed (Air) 4.69 GHz vs 2.47 GHz Around 90% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 8.79 GHz vs 1.8 GHz Around 5x better overclocked clock speed (Water)
Front view of AMD Athlon 64 3100+

Reasons to consider the
AMD Athlon 64 3100+

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Much lower typical power consumption 20.31W vs 159.66W 7.9x lower typical power consumption
Much higher Maximum operating temperature 70 °C vs 61 °C Around 15% higher Maximum operating temperature
Much lower annual home energy cost 6.02 $/year vs 56.1 $/year 9.3x lower annual home energy cost
Much lower annual commercial energy cost 21.9 $/year vs 159.62 $/year 7.3x lower annual commercial energy cost

Benchmarks Real world tests of FX 8350 vs Athlon 64 3100+

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

FX 8350  vs
Athlon 64 3100+ 
Clock speed 4 GHz 1.8 GHz
Cores Octa core Single core
Socket type
AM3+
754
462
AM2

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
AVX
SSE3
SSE
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
3DNow!
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

bus

Clock speed 2,600 MHz 400 MHz

details

FX 8350  vs
Athlon 64 3100+ 
Threads 8 1
L2 cache 8 MB 1 MB
L2 cache per core 1 MB/core 1 MB/core
Manufacture process 32 nm 130 nm
Max CPUs 1 1
Operating temperature Unknown - 61°C Unknown - 70°C

overclocking

Overclocked clock speed 4.69 GHz 2.47 GHz
Overclocked clock speed (Water) 8.79 GHz 1.8 GHz
Overclocked clock speed (Air) 4.69 GHz 2.47 GHz

power consumption

TDP 125W 25W
Annual home energy cost 56.1 $/year 6.02 $/year
Annual commercial energy cost 159.62 $/year 21.9 $/year
Performance per watt 5.72 pt/W 1.84 pt/W
Typical power consumption 159.66W 20.31W
AMD FX 8350
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AMD Athlon 64 3100+
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