CPUBoss Review Our evaluation of 3850 vs 4000 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

7.8

CPUBoss Score

Combination of all six facets

Winner
AMD A4 4000 

CPUBoss recommends the AMD A4 4000  based on its single-core performance.

See full details

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VS

Differences What are the advantages of each

Front view of AMD Sempron 3850

Reasons to consider the
AMD Sempron 3850

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Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much higher Maximum operating temperature 90 °C vs 70 °C Around 30% higher Maximum operating temperature
Much lower typical power consumption 20.31W vs 52.81W 2.6x lower typical power consumption
Newer manufacturing process 28 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower annual home energy cost 6.02 $/year vs 15.66 $/year 2.6x lower annual home energy cost
Much lower annual commercial energy cost 21.9 $/year vs 56.94 $/year 2.6x lower annual commercial energy cost
Newer Dec, 2013 vs May, 2013 Release date 7 months later
Front view of AMD A4 4000

Reasons to consider the
AMD A4 4000

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Much higher clock speed 3 GHz vs 1.3 GHz More than 2.2x higher clock speed
Much better PassMark (Single core) score 1,103 vs 512 Around 2.2x better PassMark (Single core) score

Benchmarks Real world tests of Sempron 3850 vs A4 4000

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Sempron 3850
15.62 mHash/s
A4 4000
20.49 mHash/s

CompuBench 1.5 (Face detection)

Sempron 3850
3.92 mPixels/s
A4 4000
2.42 mPixels/s

CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench

Sempron 3850
93.75 fps
A4 4000
95.86 fps

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Sempron 3850
0.35 fps
A4 4000
0.38 fps

CompuBench 1.5 (Video composition) Data courtesy CompuBench

Sempron 3850
6.15 fps
A4 4000
6.56 fps

PassMark Data courtesy Passmark

Sempron 3850
1,689
A4 4000
1,809

PassMark (Single Core)

A4 4000
1,103

Specifications Full list of technical specs

summary

Sempron 3850  vs
A4 4000 
Clock speed 1.3 GHz 3 GHz
Turbo clock speed None 3 GHz
Cores Quad core Dual core
Is unlocked No No

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
BMI1
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
ABM
CVT16
AMD-V
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333

details

Sempron 3850  vs
A4 4000 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 2 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 28 nm 32 nm
Max CPUs 1 1
Voltage range 0.5 - 1.4V 0.8 - 1.45V
Operating temperature Unknown - 90°C Unknown - 70°C

integrated graphics

GPU GPU GPU
Label Radeon HD 8280 Radeon™ HD 7480D
Latest DirectX 11.0 11.0
GPU clock speed 450 MHz 720 MHz

power consumption

TDP 25W 65W
Annual home energy cost 6.02 $/year 15.66 $/year
Annual commercial energy cost 21.9 $/year 56.94 $/year
Performance per watt 3.56 pt/W 5.4 pt/W
Typical power consumption 20.31W 52.81W
AMD Sempron 3850
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AMD A4 4000
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