CPUBoss Review Our evaluation of P8400 vs 4400E among laptop CPUs (over 15W)

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

Sky Diver and Cloud Gate

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?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS

Differences What are the advantages of each

Front view of Intel Core2 Duo P8400

Reasons to consider the
Intel Core2 Duo P8400

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CPUBoss is not aware of any important advantages of the Core2 Duo P8400 vs the Core i5 4400E.

Front view of Intel Core i5 4400E

Reasons to consider the
Intel Core i5 4400E

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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 P8400 vs Core i5 4400E

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo P8400  vs
Core i5 4400E 
Clock speed 2.26 GHz 2.7 GHz
Cores Dual core Dual core
Socket type
479
P
BGA 1364

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 25W 37W
Annual home energy cost 6.02 $/year 8.91 $/year
Performance per watt 3.83 pt/W 2.61 pt/W
Typical power consumption 20.31W 30.06W

details

Core2 Duo P8400  vs
Core i5 4400E 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 3 MB 0.5 MB
L2 cache per core 1.5 MB/core 0.25 MB/core
Manufacture process 45 nm 22 nm
Max CPUs 1 1
Clock multiplier 8 27

overclocking

Overclocked clock speed 2.54 GHz 2.7 GHz
Overclocked clock speed (Water) 2.26 GHz 2.7 GHz
Overclocked clock speed (Air) 2.54 GHz 2.7 GHz

integrated graphics

GPU None GPU
Label N/A HD 4600
Number of displays supported N/A 3
GPU clock speed N/A 400 MHz
Turbo clock speed N/A 1,000 MHz

bus

Architecture FSB DMI 2.0
Number of links 1 1
Intel Core2 Duo P8400
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Intel Core i5 4400E
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