CPUBoss Review Our evaluation of 3870K vs 3500 among desktop CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

5.5

CPUBoss Score

Combination of all six facets

Winner
AMD A8 3870K 

CPUBoss recommends the AMD A8 3870K  based on its single-core performance and overclocking.

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Differences What are the advantages of each

Front view of AMD A8 3870K

Reasons to consider the
AMD A8 3870K

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Much higher clock speed 3 GHz vs 2.1 GHz Around 45% higher clock speed
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much better PassMark (Single core) score 1,032 vs 748 Around 40% better PassMark (Single core) score
Significantly better overclocked clock speed (Air) 3.56 GHz vs 3.34 GHz More than 5% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.67 GHz vs 2.1 GHz Around 75% better overclocked clock speed (Water)
Higher Maximum operating temperature 72.7 °C vs 70.9 °C Around 5% higher Maximum operating temperature
Front view of AMD A6 3500

Reasons to consider the
AMD A6 3500

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Much better performance per watt 1.62 pt/W vs 1.03 pt/W Around 60% better performance per watt
Much lower annual home energy cost 15.66 $/year vs 40.03 $/year 2.6x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 138.41 $/year 2.4x lower annual commercial energy cost

Benchmarks Real world tests of A8 3870K vs A6 3500

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

A8 3870K
46.8 mHash/s
A6 3500
26.89 mHash/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

A8 3870K
0.62 fps
A6 3500
0.31 fps

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

A8 3870K
2,346
A6 3500
1,978

Sky Diver Data courtesy FutureMark

A8 3870K
2,532
A6 3500
1,654

Cloud Gate Data courtesy FutureMark

A8 3870K
4,726
A6 3500
3,254

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A8 3870K
5,602
A6 3500
3,139

GeekBench 3 (Single core) Data courtesy Primate Labs

A8 3870K
1,597
A6 3500
1,217

GeekBench 3 (AES single core) Data courtesy Primate Labs

A8 3870K
126,200 MB/s
A6 3500
94.7 MB/s

Specifications Full list of technical specs

summary

A8 3870K  vs
A6 3500 
Clock speed 3 GHz 2.1 GHz
Cores Quad core Tri core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
AMD64
AMD-V
3DNow!
Supports dynamic frequency scaling Yes Yes

integrated graphics

GPU GPU GPU
Label Radeon™ HD 6550D Radeon™ HD 6530D
Latest DirectX 11.0 11.0
GPU clock speed 600 MHz 443 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
DDR3-1333

details

A8 3870K  vs
A6 3500 
Architecture x86-64 x86-64
Threads 4 3
L2 cache 4 MB 3 MB
L2 cache per core 1 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Transistor count 1,178,000,000 1,178,000,000
Max CPUs 1 1
Die size 228 mm² 228 mm²
Voltage range 0.45 - 1.41V 0.91 - 1.41V
Operating temperature Unknown - 72.7°C Unknown - 70.9°C

overclocking

Overclock popularity 32 8
Overclocked clock speed 3.56 GHz 3.34 GHz
Overclocked clock speed (Water) 3.67 GHz 2.1 GHz
PassMark (Overclocked) 2,107.6 1,783.9
Overclocked clock speed (Air) 3.56 GHz 3.34 GHz

power consumption

TDP 100W 65W
Annual home energy cost 40.03 $/year 15.66 $/year
Annual commercial energy cost 138.41 $/year 56.94 $/year
Performance per watt 1.03 pt/W 1.62 pt/W
Typical power consumption N/A 52.81W
AMD A8 3870K
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AMD A6 3500
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