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Front view of AMD A4 4000

AMD A4 4000

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Pentium B940

Reasons to consider the
Intel Pentium B940

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Significantly lower typical power consumption 28.44W vs 52.81W More than 45% lower typical power consumption
Higher Maximum operating temperature 85 °C vs 70 °C More than 20% higher Maximum operating temperature
Significantly lower annual home energy cost 8.43 $/year vs 15.66 $/year More than 45% lower annual home energy cost
Significantly lower annual commercial energy cost 30.66 $/year vs 56.94 $/year More than 45% lower annual commercial energy cost
Front view of AMD A4 4000

Reasons to consider the
AMD A4 4000

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Much better performance per dollar 7.8 pt/$ vs 0.79 pt/$ More than 9.8x better performance per dollar
Significantly higher clock speed 3 GHz vs 2 GHz 50% higher clock speed
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much better overclocked clock speed (Air) 4.02 GHz vs 2 GHz More than 2x better overclocked clock speed (Air)
Higher GPU clock speed 720 MHz vs 650 MHz More than 10% higher GPU clock speed
Better performance per watt 5.4 pt/W vs 3.04 pt/W Around 80% better performance per watt
Newer May, 2013 vs Apr, 2011 Release date over 2 years later
Much better overclocked clock speed (Water) 3.49 GHz vs 2 GHz Around 75% better overclocked clock speed (Water)

Benchmarks Real world tests of Pentium B940 vs A4 4000

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Pentium B940
2,594
A4 4000
2,519

GeekBench 3 (Single core) Data courtesy Primate Labs

Pentium B940
1,479
A4 4000
1,622

GeekBench 3 (AES single core) Data courtesy Primate Labs

Pentium B940
98,900 MB/s
A4 4000
1,830,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Pentium B940
2,455
A4 4000
2,502

GeekBench

Pentium B940
4,755
A4 4000
2,502

PassMark Data courtesy Passmark

Pentium B940
1,724
A4 4000
1,809

PassMark (Single Core)

A4 4000
1,103

Specifications Full list of technical specs

summary

Pentium B940  vs
A4 4000 
Clock speed 2 GHz 3 GHz
Cores Dual core Dual core

features

Has a NX bit Yes Yes
Has virtualization support No Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
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

power consumption

TDP 35W 65W
Annual home energy cost 8.43 $/year 15.66 $/year
Annual commercial energy cost 30.66 $/year 56.94 $/year
Performance per watt 3.04 pt/W 5.4 pt/W
Typical power consumption 28.44W 52.81W

details

Pentium B940  vs
A4 4000 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 85°C Unknown - 70°C

overclocking

Overclocked clock speed 2 GHz 4.02 GHz
Overclocked clock speed (Water) 2 GHz 3.49 GHz
Overclocked clock speed (Air) 2 GHz 4.02 GHz

integrated graphics

GPU GPU GPU
Label HD Graphics Radeon™ HD 7480D
GPU clock speed 650 MHz 720 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Intel Pentium B940
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AMD A4 4000
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