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Differences What are the advantages of each

Front view of AMD FX 8100

Reasons to consider the
AMD FX 8100

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much better PassMark (Single core) score 1,123 vs 790 More than 40% better PassMark (Single core) score
Higher clock speed 2.8 GHz vs 2.5 GHz More than 10% higher clock speed
Much more l3 cache per core 1 MB/core vs 0.25 MB/core 4x more l3 cache per core
Much better overclocked clock speed (Water) 2.8 GHz vs 2.2 GHz More than 25% better overclocked clock speed (Water)
Front view of AMD A6 3620

Reasons to consider the
AMD A6 3620

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
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
Better overclocked clock speed (Air) 2.85 GHz vs 2.8 GHz Almost the same

Benchmarks Real world tests of FX 8100 vs A6 3620

GeekBench 3 (Multi-core) Data courtesy Primate Labs

FX 8100
6,389
A6 3620
4,173

GeekBench 3 (Single core) Data courtesy Primate Labs

FX 8100
1,523
A6 3620
1,201

GeekBench 3 (AES single core) Data courtesy Primate Labs

FX 8100
1,840 MB/s
A6 3620
94,100 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

FX 8100
7,206
A6 3620
3,994

GeekBench

FX 8100
7,206
A6 3620
4,374

PassMark Data courtesy Passmark

FX 8100
6,080
A6 3620
2,825

PassMark (Single Core)

FX 8100
1,123
A6 3620
790

Specifications Full list of technical specs

summary

FX 8100  vs
A6 3620 
Clock speed 2.8 GHz 2.5 GHz
Turbo clock speed 3.1 GHz 2.5 GHz
Cores Octa core Quad core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Has virtualization support 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

integrated graphics

GPU None GPU
Label N/A Radeon™ HD 6530D
Latest DirectX N/A 11.0
GPU clock speed N/A 443 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866

details

FX 8100  vs
A6 3620 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 8 MB 4 MB
L2 cache per core 1 MB/core 1 MB/core
L3 cache 8 MB 1 MB
L3 cache per core 1 MB/core 0.25 MB/core
Manufacture process 32 nm 32 nm
Transistor count 1,200,000,000 1,178,000,000
Max CPUs 1 1
Die size 319 mm² 228 mm²
Voltage range 0.78 - 1.43V 0.45 - 1.41V
Operating temperature Unknown - 70°C Unknown - 70.5°C

overclocking

Overclocked clock speed 2.8 GHz 2.85 GHz
Overclocked clock speed (Water) 2.8 GHz 2.2 GHz
Overclocked clock speed (Air) 2.8 GHz 2.85 GHz

power consumption

TDP 95W 65W
Annual home energy cost 22.89 $/year 15.66 $/year
Annual commercial energy cost 83.22 $/year 56.94 $/year
Performance per watt 1.43 pt/W 1.94 pt/W
Typical power consumption 77.19W 52.81W
AMD FX 8100
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AMD A6 3620
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