CPUBoss Review Our evaluation of 651 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

4.9

CPUBoss Score

Combination of all six facets

Winner
AMD Athlon II X4 651 

CPUBoss recommends the AMD Athlon II X4 651  based on its single-core performance and overclocking.

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VS

Differences What are the advantages of each

Front view of AMD Athlon II X4 651

Reasons to consider the
AMD Athlon II X4 651

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Much higher clock speed 3 GHz vs 2.1 GHz Around 45% higher clock speed
Much better PassMark (Single core) score 1,049 vs 748 More than 40% better PassMark (Single core) score
Much better overclocked clock speed (Water) 3 GHz vs 2.1 GHz Around 45% better overclocked clock speed (Water)
Better overclocked clock speed (Air) 3.41 GHz vs 3.34 GHz Almost the same
Front view of AMD A6 3500

Reasons to consider the
AMD A6 3500

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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 81.25W 35% lower typical power consumption
Much lower annual home energy cost 15.66 $/year vs 24.09 $/year 35% lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 87.6 $/year 35% lower annual commercial energy cost

Benchmarks Real world tests of Athlon II X4 651 vs A6 3500

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Athlon II X4 651
125,700 MB/s
A6 3500
94.7 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

3D Mark 11 (Physics)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon II X4 651  vs
A6 3500 
Clock speed 3 GHz 2.1 GHz
Turbo clock speed None 2.4 GHz
Cores Quad core Tri core

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

power consumption

TDP 100W 65W
Annual home energy cost 24.09 $/year 15.66 $/year
Annual commercial energy cost 87.6 $/year 56.94 $/year
Performance per watt 1.51 pt/W 1.62 pt/W
Typical power consumption 81.25W 52.81W

details

Athlon II X4 651  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 0.91 - 1.41V 0.91 - 1.41V

overclocking

Overclocked clock speed 3.41 GHz 3.34 GHz
Overclocked clock speed (Water) 3 GHz 2.1 GHz
Overclocked clock speed (Air) 3.41 GHz 3.34 GHz

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
AMD Athlon II X4 651
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AMD A6 3500
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