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Differences What are the advantages of each

Front view of AMD Opteron 3365

Reasons to consider the
AMD Opteron 3365

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Much more l2 cache 8 MB vs 6 MB Around 35% more l2 cache; more data can be stored in the l2 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 6 2 more cores; run more applications at once
More threads 8 vs 6 2 more 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
Newer Jul, 2013 vs Oct, 2012 Release date 8 months later
Front view of AMD FX 6300

Reasons to consider the
AMD FX 6300

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Significantly higher clock speed 3.5 GHz vs 2.3 GHz More than 50% higher clock speed
Higher turbo clock speed 4.1 GHz vs 3.3 GHz Around 25% higher turbo clock speed
Much better overclocked clock speed (Air) 4.75 GHz vs 2.3 GHz More than 2x better overclocked clock speed (Air)
Much better performance per watt 9.84 pt/W vs 2.72 pt/W More than 3.5x better performance per watt
Better PassMark (Single core) score 1,446 vs 1,044 Around 40% better PassMark (Single core) score
Much better overclocked clock speed (Water) 4.82 GHz vs 2.3 GHz More than 2x better overclocked clock speed (Water)
More l3 cache per core 1.33 MB/core vs 1 MB/core Around 35% more l3 cache per core

Benchmarks Real world tests of Opteron 3365 vs FX 6300

PassMark Data courtesy Passmark

Opteron 3365
5,803
FX 6300
6,444

PassMark (Single Core)

Opteron 3365
1,044
FX 6300
1,446

Specifications Full list of technical specs

summary

Opteron 3365  vs
FX 6300 
Clock speed 2.3 GHz 3.5 GHz
Turbo clock speed 3.3 GHz 4.1 GHz
Cores Octa core Hexa core
Socket type
AM3+
Is unlocked No Yes

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
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

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
Performance per watt 2.72 pt/W 9.84 pt/W
Typical power consumption 52.81W 77.19W

details

Opteron 3365  vs
FX 6300 
Architecture x86-64 x86-64
Threads 8 6
L2 cache 8 MB 6 MB
L2 cache per core 1 MB/core 1 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 1 MB/core 1.33 MB/core
Manufacture process 32 nm 32 nm
Die size 315 mm² 319 mm²
Clock multiplier 11 20

overclocking

Overclocked clock speed 2.3 GHz 4.75 GHz
Overclocked clock speed (Water) 2.3 GHz 4.82 GHz
Overclocked clock speed (Air) 2.3 GHz 4.75 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

memory controller

Memory controller Built-in Built-in
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
AMD Opteron 3365
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AMD FX 6300
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