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Differences What are the advantages of each

Front view of Intel Core2 Quad Q9400

Reasons to consider the
Intel Core2 Quad Q9400

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Much more l2 cache 6 MB vs 4 MB 50% more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher clock speed 2.66 GHz vs 1.8 GHz Around 50% higher clock speed
Much more l2 cache per core 1.5 MB/core vs 0.5 MB/core 3x more l2 cache per core
Much better overclocked clock speed (Air) 3.54 GHz vs 1.8 GHz More than 95% better overclocked clock speed (Air)
Significantly higher Maximum operating temperature 71.4 °C vs 55 °C Around 30% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.15 GHz vs 1.8 GHz More than 2.2x better overclocked clock speed (Water)
Front view of AMD Opteron 6124 HE

Reasons to consider the
AMD Opteron 6124 HE

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Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
More cores 8 vs 4 Twice as many cores; run more applications at once
More threads 8 vs 4 Twice as many threads
Lower typical power consumption 69.06W vs 77.19W More than 10% lower typical power consumption
Newer Mar, 2010 vs Jul, 2008 Release date over 1 years later
Lower annual home energy cost 20.48 $/year vs 22.89 $/year More than 10% lower annual home energy cost
Lower annual commercial energy cost 74.46 $/year vs 83.22 $/year More than 10% lower annual commercial energy cost

Features Key features of the Core2 Quad Q9400  vs Opteron 6124 HE 

clock speed

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Core2 Quad Q9400  vs
Opteron 6124 HE 
Clock speed 2.66 GHz 1.8 GHz
Cores Quad core Octa core
Socket type
LGA 775
G34

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

power consumption

TDP 95W 85W
Annual home energy cost 22.89 $/year 20.48 $/year
Annual commercial energy cost 83.22 $/year 74.46 $/year
Typical power consumption 77.19W 69.06W

bus

Architecture FSB HyperTransport 3.0
Clock speed 1,333 MHz 3,200 MHz

details

Core2 Quad Q9400  vs
Opteron 6124 HE 
Threads 4 8
L2 cache 6 MB 4 MB
L2 cache per core 1.5 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 4
Clock multiplier 8 9
Voltage range 0.85 - 1.36V 1 - UnknownV
Operating temperature Unknown - 71.4°C Unknown - 55°C

overclocking

Overclocked clock speed 3.54 GHz 1.8 GHz
Overclocked clock speed (Water) 4.15 GHz 1.8 GHz
Overclocked clock speed (Air) 3.54 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 Quad Q9400
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AMD Opteron 6124 HE
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