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Differences What are the advantages of each

Front view of AMD Opteron 6328

Reasons to consider the
AMD Opteron 6328

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Much better geekbench 3 Multi-Core score 19,224 vs 10,502 Around 85% better geekbench 3 Multi-Core score
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
Significantly more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Front view of AMD FX 8300

Reasons to consider the
AMD FX 8300

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Higher turbo clock speed 4.2 GHz vs 3.8 GHz More than 10% higher turbo clock speed
Much better performance per watt 10.58 pt/W vs 2.08 pt/W More than 5x better performance per watt
Lower typical power consumption 77.19W vs 93.44W More than 15% lower typical power consumption
Significantly better overclocked clock speed (Air) 4.61 GHz vs 3.8 GHz More than 20% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 4.51 GHz vs 3.8 GHz Around 20% better overclocked clock speed (Water)
Lower annual commercial energy cost 83.22 $/year vs 100.74 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 22.89 $/year vs 27.7 $/year More than 15% lower annual home energy cost

Benchmarks Real world tests of Opteron 6328 vs FX 8300

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Opteron 6328
19,224
FX 8300
10,502

GeekBench 3 (Single core) Data courtesy Primate Labs

Opteron 6328
2,110
FX 8300
2,159

GeekBench 3 (AES single core) Data courtesy Primate Labs

Opteron 6328
2,280 MB/s
FX 8300
2,420,000 MB/s

PassMark Data courtesy Passmark

Opteron 6328
7,813
FX 8300
7,682

PassMark (Single Core)

Opteron 6328
1,311
FX 8300
1,396

Specifications Full list of technical specs

summary

Opteron 6328  vs
FX 8300 
Clock speed 3.2 GHz 3.3 GHz
Turbo clock speed 3.8 GHz 4.2 GHz
Cores Octa core Octa core
Socket type
G34
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 115W 95W
Annual home energy cost 27.7 $/year 22.89 $/year
Annual commercial energy cost 100.74 $/year 83.22 $/year
Performance per watt 2.08 pt/W 10.58 pt/W
Typical power consumption 93.44W 77.19W

details

Opteron 6328  vs
FX 8300 
Threads 8 8
L2 cache 8 MB 8 MB
L2 cache per core 1 MB/core 1 MB/core
L3 cache 16 MB 8 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 4 1
Clock multiplier 19 21
Operating temperature Unknown - 71.7°C Unknown - 70.5°C

overclocking

Overclocked clock speed 3.8 GHz 4.61 GHz
Overclocked clock speed (Water) 3.8 GHz 4.51 GHz
Overclocked clock speed (Air) 3.8 GHz 4.61 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
Memory type
DDR3-1866
DDR3
Channels Quad Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 29,866.66 MB/s
AMD Opteron 6328
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AMD FX 8300
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