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Differences What are the advantages of each

Front view of Intel Core2 Duo E4400

Reasons to consider the
Intel Core2 Duo E4400

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Higher clock speed 2 GHz vs 1.8 GHz More than 10% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Air) 3.16 GHz vs 1.8 GHz More than 75% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.53 GHz vs 1.8 GHz More than 95% better overclocked clock speed (Water)
Higher Maximum operating temperature 61.4 °C vs 55 °C More than 10% higher Maximum operating temperature
Front view of AMD Opteron 2346 HE

Reasons to consider the
AMD Opteron 2346 HE

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Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More cores 4 vs 2 Twice as many cores; run more applications at once
Lower typical power consumption 44.69W vs 52.81W More than 15% lower typical power consumption
More threads 4 vs 2 Twice as many threads
Newer Sep, 2007 vs Apr, 2007 Release date 4 months later
Lower annual home energy cost 13.25 $/year vs 15.66 $/year More than 15% lower annual home energy cost
Lower annual commercial energy cost 48.18 $/year vs 56.94 $/year More than 15% lower annual commercial energy cost

Features Key features of the Core2 Duo E4400  vs Opteron 2346 HE 

clock speed

L2 cache

overclocked clock speed (air)

Core2 Duo E4400
3.16 GHz
Opteron 2346 HE
1.8 GHz

overclocked clock speed (water)

Core2 Duo E4400
3.53 GHz
Opteron 2346 HE
1.8 GHz

Specifications Full list of technical specs

summary

Core2 Duo E4400  vs
Opteron 2346 HE 
Clock speed 2 GHz 1.8 GHz
Cores Dual core Quad core
Socket type
LGA 775
F

features

Has a NX bit Yes Yes
Has virtualization support No Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 55W
Annual home energy cost 15.66 $/year 13.25 $/year
Annual commercial energy cost 56.94 $/year 48.18 $/year
Typical power consumption 52.81W 44.69W

bus

Clock speed 800 MHz 1,000 MHz

details

Core2 Duo E4400  vs
Opteron 2346 HE 
Threads 2 4
L2 cache 2 MB 2 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 65 nm 65 nm
Max CPUs 1 2
Clock multiplier 10 9
Voltage range 0.85 - 1.5V 1.12 - UnknownV
Operating temperature Unknown - 61.4°C 0 - 55°C

overclocking

Overclocked clock speed 3.16 GHz 1.8 GHz
Overclocked clock speed (Water) 3.53 GHz 1.8 GHz
Overclocked clock speed (Air) 3.16 GHz 1.8 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 E4400
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AMD Opteron 2346 HE
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