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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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Much better 3DMark06 CPU score 2,036 vs 20.3 More than 100.2x better 3DMark06 CPU score
Much better geekbench 3 AES single core score 95,500 MB/s vs 41,900 MB/s More than 2.2x better geekbench 3 AES single core score
Much more l2 cache 3 MB vs 1 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better geekbench 2 (32-bit) score 2,110 vs 827 More than 2.5x better geekbench 2 (32-bit) score
Significantly higher clock speed 2.26 GHz vs 1.3 GHz Around 75% higher clock speed
Much more l2 cache per core 1.5 MB/core vs 0.5 MB/core 3x more l2 cache per core
Better performance per watt 3.83 pt/W vs 2.34 pt/W Around 65% better performance per watt
Front view of AMD E 300

Reasons to consider the
AMD E 300

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Newer manufacturing process 40 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Aug, 2011 vs Jul, 2008 Release date over 3 years later
Lower typical power consumption 14.63W vs 20.31W Around 30% lower typical power consumption
Lower annual home energy cost 4.34 $/year vs 6.02 $/year Around 30% lower annual home energy cost
Lower annual commercial energy cost 15.77 $/year vs 21.9 $/year Around 30% lower annual commercial energy cost

Benchmarks Real world tests of Core2 Duo P8400 vs E 300

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Duo P8400
95,500 MB/s
E 300
41,900 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

E 300
1,233

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo P8400  vs
E 300 
Clock speed 2.26 GHz 1.3 GHz
Cores Dual core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
AMD64
SSE4.1
AMD-V
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

details

Core2 Duo P8400  vs
E 300 
Threads 2 2
L2 cache 3 MB 1 MB
L2 cache per core 1.5 MB/core 0.5 MB/core
Manufacture process 45 nm 40 nm
Max CPUs 1 1
Clock multiplier 8 5

integrated graphics

GPU None GPU
Label N/A Radeon™ HD 6310
Latest DirectX N/A 11.0
GPU clock speed N/A 488 MHz

power consumption

TDP 25W 18W
Annual home energy cost 6.02 $/year 4.34 $/year
Annual commercial energy cost 21.9 $/year 15.77 $/year
Performance per watt 3.83 pt/W 2.34 pt/W
Typical power consumption 20.31W 14.63W
Intel Core2 Duo P8400
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AMD E 300
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