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Differences What are the advantages of each

Front view of AMD Opteron 275

Reasons to consider the
AMD Opteron 275

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Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual home energy cost 20.48 $/year vs 48.09 $/year 2.3x lower annual home energy cost
Much lower annual commercial energy cost 74.46 $/year vs 136.66 $/year More than 45% lower annual commercial energy cost
Front view of AMD FX 6100

Reasons to consider the
AMD FX 6100

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Much more l2 cache 6 MB vs 2 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 3.3 GHz vs 2.2 GHz Around 50% higher clock speed
Much better overclocked clock speed (Air) 4.4 GHz vs 2.2 GHz More than 2x better overclocked clock speed (Air)
More cores 6 vs 2 Three times as many cores; run more applications at once
Significantly better geekbench 3 single core score 1,798 vs 884 More than 2x better geekbench 3 single core score
Newer Oct, 2011 vs May, 2005 Release date over 6 years later
Better PassMark score 5,409 vs 1,291 Around 4.2x better PassMark score
Significantly better performance per watt 3.75 pt/W vs 0.87 pt/W More than 4.2x better performance per watt
More threads 6 vs 2 Three times as many threads
Much better overclocked clock speed (Water) 4.72 GHz vs 2.2 GHz Around 2.2x better overclocked clock speed (Water)

Benchmarks Real world tests of Opteron 275 vs FX 6100

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Opteron 275
2,534
FX 6100
6,990

GeekBench 3 (Single core) Data courtesy Primate Labs

FX 6100
1,798

GeekBench 3 (AES single core) Data courtesy Primate Labs

Opteron 275
60,200 MB/s
FX 6100
2,090,000 MB/s

PassMark Data courtesy Passmark

Opteron 275
1,291
FX 6100
5,409

PassMark (Single Core)

FX 6100
1,184

Specifications Full list of technical specs

summary

Opteron 275  vs
FX 6100 
Clock speed 2.2 GHz 3.3 GHz
Cores Dual core Hexa core
Socket type
940
AM3+

features

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

details

Opteron 275  vs
FX 6100 
Threads 2 6
L2 cache 2 MB 6 MB
L2 cache per core 1 MB/core 1 MB/core
Manufacture process 90 nm 32 nm
Max CPUs 2 1
Voltage range 1.2 - UnknownV 1.21 - 1.35V
Operating temperature 0 - 67°C Unknown - 70°C

overclocking

Overclocked clock speed 2.2 GHz 4.4 GHz
Overclocked clock speed (Water) 2.2 GHz 4.72 GHz
PassMark (Overclocked) 1,303.6 3,158.7
Overclocked clock speed (Air) 2.2 GHz 4.4 GHz

power consumption

TDP 85W 95W
Annual home energy cost 20.48 $/year 48.09 $/year
Annual commercial energy cost 74.46 $/year 136.66 $/year
Performance per watt 0.87 pt/W 3.75 pt/W
Typical power consumption 69.06W N/A
AMD Opteron 275
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AMD FX 6100
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