CPUBoss Review Our evaluation of E8400 vs 4000 among desktop CPUs (45 to 75W)

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

2.5

CPUBoss Score

Combination of all six facets

Winner
Intel Core2 Duo E8400 

CPUBoss recommends the Intel Core2 Duo E8400  based on its .

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VS

Differences What are the advantages of each

Front view of Intel Core2 Duo E8400

Reasons to consider the
Intel Core2 Duo E8400

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CPUBoss is not aware of any important advantages of the Intel Core2 Duo E8400 vs the AMD A4 4000.

Front view of AMD A4 4000

Reasons to consider the
AMD A4 4000

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required

Benchmarks Real world tests of Core2 Duo E8400 vs A4 4000

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core2 Duo E8400
2.41 mHash/s
A4 4000
20.49 mHash/s

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A4 4000
2,519

GeekBench 3 (Single core) Data courtesy Primate Labs

A4 4000
1,622

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Duo E8400
128,000 MB/s
A4 4000
1,830,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

A4 4000
2,502

GeekBench

A4 4000
2,502

PassMark Data courtesy Passmark

A4 4000
1,809

PassMark (Single Core)

A4 4000
1,103

Specifications Full list of technical specs

summary

Core2 Duo E8400  vs
A4 4000 
Clock speed 3 GHz 3 GHz
Cores Dual core Dual core

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

power consumption

TDP 65W 65W
Annual home energy cost 15.66 $/year 15.66 $/year
Annual commercial energy cost 56.94 $/year 56.94 $/year
Performance per watt 1.83 pt/W 5.4 pt/W
Typical power consumption 52.81W 52.81W

details

Core2 Duo E8400  vs
A4 4000 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 6 MB 1 MB
L2 cache per core 3 MB/core 0.5 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1
Voltage range 0.85 - 1.36V 0.8 - 1.45V
Operating temperature Unknown - 72.4°C Unknown - 70°C

overclocking

Overclocked clock speed 4.22 GHz 4.02 GHz
Overclocked clock speed (Water) 4.23 GHz 3.49 GHz
Overclocked clock speed (Air) 4.22 GHz 4.02 GHz

integrated graphics

GPU None GPU
Label N/A Radeon™ HD 7480D
Latest DirectX N/A 11.0
GPU clock speed N/A 720 MHz
Intel Core2 Duo E8400
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AMD A4 4000
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