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Differences What are the advantages of each

Front view of Intel Core i7 720QM

Reasons to consider the
Intel Core i7 720QM

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Significantly lower typical power consumption 36.56W vs 60.94W 40% lower typical power consumption
More threads 8 vs 4 Twice as many threads
Significantly lower annual commercial energy cost 39.42 $/year vs 65.7 $/year 40% lower annual commercial energy cost
Significantly lower annual home energy cost 10.84 $/year vs 18.07 $/year 40% lower annual home energy cost
Newer Jul, 2009 vs Feb, 2009 Release date 4 months later
Front view of AMD Opteron 2387

Reasons to consider the
AMD Opteron 2387

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Significantly higher clock speed 2.8 GHz vs 1.6 GHz Around 75% higher clock speed
Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Better overclocked clock speed (Air) 2.8 GHz vs 2.52 GHz More than 10% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 2.8 GHz vs 1.6 GHz Around 75% better overclocked clock speed (Water)

Features Key features of the Core i7 720QM  vs Opteron 2387 

clock speed

Core i7 720QM
1.6 GHz
Opteron 2387
2.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Core i7 720QM
2.52 GHz
Opteron 2387
2.8 GHz

overclocked clock speed (water)

Core i7 720QM
1.6 GHz
Opteron 2387
2.8 GHz

Specifications Full list of technical specs

summary

Core i7 720QM  vs
Opteron 2387 
Clock speed 1.6 GHz 2.8 GHz
Cores Quad core Quad core
Socket type
rPGA 988A
F
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 45W 75W
Annual home energy cost 10.84 $/year 18.07 $/year
Annual commercial energy cost 39.42 $/year 65.7 $/year
Typical power consumption 36.56W 60.94W

details

Core i7 720QM  vs
Opteron 2387 
Threads 8 4
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 6 MB 6 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 2
Clock multiplier 12 14

overclocking

Overclocked clock speed 2.52 GHz 2.8 GHz
Overclocked clock speed (Water) 1.6 GHz 2.8 GHz
Overclocked clock speed (Air) 2.52 GHz 2.8 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

bus

Architecture DMI HyperTransport 3.0
Intel Core i7 720QM
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AMD Opteron 2387
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