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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 2 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 45 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l2 cache per core 3 MB/core vs 1 MB/core 3x more l2 cache per core
Much lower typical power consumption 52.81W vs 96.69W More than 45% lower typical power consumption
Significantly better overclocked clock speed (Air) 4.22 GHz vs 3 GHz More than 40% better overclocked clock speed (Air)
Significantly higher Maximum operating temperature 72.4 °C vs 55 °C More than 30% higher Maximum operating temperature
Much lower annual home energy cost 15.66 $/year vs 28.67 $/year More than 45% lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 104.24 $/year More than 45% lower annual commercial energy cost
Significantly better overclocked clock speed (Water) 4.23 GHz vs 3 GHz More than 40% better overclocked clock speed (Water)
Newer Jan, 2008 vs Aug, 2007 Release date 4 months later
Front view of AMD Opteron 8222 SE

Reasons to consider the
AMD Opteron 8222 SE

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Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration

Features Key features of the Core2 Duo E8400  vs Opteron 8222 SE 

clock speed

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Core2 Duo E8400  vs
Opteron 8222 SE 
Clock speed 3 GHz 3 GHz
Cores Dual core Dual core
Socket type
LGA 775
F

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 119W
Annual home energy cost 15.66 $/year 28.67 $/year
Annual commercial energy cost 56.94 $/year 104.24 $/year
Typical power consumption 52.81W 96.69W

details

Core2 Duo E8400  vs
Opteron 8222 SE 
Threads 2 2
L2 cache 6 MB 2 MB
L2 cache per core 3 MB/core 1 MB/core
Manufacture process 45 nm 90 nm
Max CPUs 1 8
Clock multiplier 9 15
Voltage range 0.85 - 1.36V 1.3 - UnknownV
Operating temperature Unknown - 72.4°C 0 - 55°C

overclocking

Overclocked clock speed 4.22 GHz 3 GHz
Overclocked clock speed (Water) 4.23 GHz 3 GHz
Overclocked clock speed (Air) 4.22 GHz 3 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 Opteron 8222 SE
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