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Intel Core2 Duo E8400

Front view of Intel Core2 Duo E8400
Front view of AMD Phenom X3 8450

AMD Phenom X3 8450

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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 higher clock speed 3 GHz vs 2.1 GHz Around 45% higher clock speed
Much better PassMark (Single core) score 1,251 vs 718 Around 75% better PassMark (Single core) score
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Air) 4.22 GHz vs 2.66 GHz Around 60% better overclocked clock speed (Air)
Much better performance per watt 1.83 pt/W vs 0.94 pt/W More than 95% better performance per watt
Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Much better overclocked clock speed (Water) 4.23 GHz vs 2.1 GHz More than 2x better overclocked clock speed (Water)
Higher Maximum operating temperature 72.4 °C vs 70 °C Around 5% higher Maximum operating temperature
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost
Front view of AMD Phenom X3 8450

Reasons to consider the
AMD Phenom X3 8450

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More cores 3 vs 2 1 more cores; run more applications at once
More threads 3 vs 2 1 more threads

Benchmarks Real world tests of Core2 Duo E8400 vs Phenom X3 8450

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core2 Duo E8400
2,982
Phenom X3 8450
2,722

GeekBench 3 (Single core) Data courtesy Primate Labs

Core2 Duo E8400
1,625
Phenom X3 8450
998

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Duo E8400
128,000 MB/s
Phenom X3 8450
80,100 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core2 Duo E8400
2,826
Phenom X3 8450
2,641

GeekBench (64-bit) Data courtesy Primate Labs

Core2 Duo E8400
3,092
Phenom X3 8450
3,548

GeekBench

Core2 Duo E8400
4,794
Phenom X3 8450
3,548

PassMark Data courtesy Passmark

Core2 Duo E8400
2,160
Phenom X3 8450
1,887

PassMark (Single Core)

Core2 Duo E8400
1,251
Phenom X3 8450
718

Specifications Full list of technical specs

summary

 Core2 Duo E8400  vs
Phenom X3 8450 
Clock speed 3 GHz 2.1 GHz
Cores Dual core Tri core
Socket type
LGA 775
AM2+

features
Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
SSE4.1
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption
TDP 65W 95W
Annual home energy cost 15.66 $/year 22.89 $/year
Annual commercial energy cost 56.94 $/year 83.22 $/year
Performance per watt 1.83 pt/W 0.94 pt/W
Typical power consumption 52.81W 77.19W

details

 Core2 Duo E8400  vs
Phenom X3 8450 
Architecture x86-64 x86-64
Threads 2 3
L2 cache 6 MB 2 MB
L2 cache per core 3 MB/core 0.67 MB/core
Manufacture process 45 nm 65 nm
Max CPUs 1 1
Operating temperature Unknown - 72.4°C Unknown - 70°C

overclocking
Overclocked clock speed 4.22 GHz 2.66 GHz
Overclocked clock speed (Water) 4.23 GHz 2.1 GHz
Overclocked clock speed (Air) 4.22 GHz 2.66 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

bus
Clock speed 1,333 MHz 1,800 MHz
Intel Core2 Duo E8400
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AMD Phenom X3 8450
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