CPUBoss Review Our evaluation of T9400 vs P8400

Performance

Benchmark performance using all cores

3DMark06 (CPU), Passmark, GeekBench (32-bit) and GeekBench (64-bit)

Single-core Performance

Individual core benchmark performance

Passmark (Single Core)

Power Consumption

How much power does the processor require?

TDP

Features

How does CPUBoss rank the features of each product?

Features and specifications that differ between products

CPUBoss Score

Performance, Single-core Performance, Power Consumption and Features

Winner
Intel Core2 Duo T9400 

CPUBoss recommends the Intel Core2 Duo T9400  based on its .

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Differences What are the advantages of each

Front view of Intel Core2 Duo T9400

Reasons to consider the
Intel Core2 Duo T9400

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Much more l2 cache 6 MB vs 3 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 3 MB/core vs 1.5 MB/core 2x more l2 cache per core
Higher clock speed 2.53 GHz vs 2.26 GHz More than 10% higher clock speed
Front view of Intel Core2 Duo P8400

Reasons to consider the
Intel Core2 Duo P8400

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Lower typical power consumption 20.31W vs 28.44W Around 30% lower typical power consumption
Better performance per dollar 1.34 pt/$ vs 0.97 pt/$ Around 40% better performance per dollar
Lower annual home energy cost 6.02 $/year vs 8.43 $/year Around 30% lower annual home energy cost

Benchmarks Real world tests of Core2 Duo T9400 vs P8400

Specifications Full list of technical specs

summary

Core2 Duo T9400  vs
P8400 
Clock speed 2.53 GHz 2.26 GHz
Cores Dual core Dual core
Socket type
478
P
479
Is hyperthreaded No No

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has vitualization support Yes Yes
Instruction-set-extensions
MMX
SSE
SSE3
SSE2
Supplemental SSE3
SSE4.1
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 35W 25W
Annual home energy cost 8.43 $/year 6.02 $/year
Performance per watt 9.17 pt/W 11.27 pt/W
Typical power consumption 28.44W 20.31W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,066 MHz 1,066 MHz

details

Core2 Duo T9400  vs
P8400 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 6 MB 3 MB
L2 cache per core 3 MB/core 1.5 MB/core
Manufacture process 45 nms 45 nms
Transistor count 410,000,000 410,000,000
Max CPUs 1 1
Clock multiplier 9 8
Voltage range 1.05 - 1.16V 1.05 - 1.15V

gpu

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A
Intel Core2 Duo T9400
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Intel Core2 Duo P8400
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