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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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Much more l2 cache 6 MB vs 1 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better PassMark score 2,160 vs 1,347 More than 60% better PassMark score
Much better PassMark (Single core) score 1,251 vs 781 More than 60% better PassMark (Single core) score
Much better geekbench 2 (32-bit) score 2,826 vs 1,923 More than 45% better geekbench 2 (32-bit) score
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 3 GHz vs 2.6 GHz More than 15% higher clock speed
Much better overclocked clock speed (Air) 4.22 GHz vs 3.18 GHz Around 35% better overclocked clock speed (Air)
Much more l2 cache per core 3 MB/core vs 0.5 MB/core 6x more l2 cache per core
Much better overclocked clock speed (Water) 4.23 GHz vs 2.6 GHz Around 65% better overclocked clock speed (Water)
Front view of AMD Athlon X2 5050e

Reasons to consider the
AMD Athlon X2 5050e

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Significantly lower typical power consumption 36.56W vs 52.81W More than 30% lower typical power consumption
Much higher Maximum operating temperature 78 °C vs 72.4 °C Around 10% higher Maximum operating temperature
Significantly lower annual home energy cost 10.84 $/year vs 15.66 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 39.42 $/year vs 56.94 $/year More than 30% lower annual commercial energy cost
Newer Oct, 2008 vs Jan, 2008 Release date 9 months later

Benchmarks Real world tests of Core2 Duo E8400 vs Athlon X2 5050e

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 E8400
128,000 MB/s
Athlon X2 5050e
70,550 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E8400  vs
Athlon X2 5050e 
Clock speed 3 GHz 2.6 GHz
Cores Dual core Dual core
Socket type
LGA 775
AM2

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 45W
Annual home energy cost 15.66 $/year 10.84 $/year
Annual commercial energy cost 56.94 $/year 39.42 $/year
Performance per watt 1.83 pt/W 1.75 pt/W
Typical power consumption 52.81W 36.56W

details

Core2 Duo E8400  vs
Athlon X2 5050e 
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 65 nm
Max CPUs 1 1
Voltage range 0.85 - 1.36V 1 - 1.25V
Operating temperature Unknown - 72.4°C Unknown - 78°C

overclocking

Overclocked clock speed 4.22 GHz 3.18 GHz
Overclocked clock speed (Water) 4.23 GHz 2.6 GHz
Overclocked clock speed (Air) 4.22 GHz 3.18 GHz

integrated graphics

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 E8400
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AMD Athlon X2 5050e
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