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Differences What are the advantages of each

Front view of Intel Core i7 3520M

Reasons to consider the
Intel Core i7 3520M

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Much newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 28.44W vs 60.94W 2.1x lower typical power consumption
Much higher Maximum operating temperature 105 °C vs 55 °C More than 90% higher Maximum operating temperature
Newer Jun, 2012 vs Feb, 2009 Release date over 3 years later
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better overclocked clock speed (Air) 3.31 GHz vs 2.8 GHz Around 20% better overclocked clock speed (Air)
Much lower annual home energy cost 8.43 $/year vs 18.07 $/year 2.1x lower annual home energy cost
Much lower annual commercial energy cost 30.66 $/year vs 65.7 $/year 2.1x lower annual commercial energy cost
Front view of AMD Opteron 2387

Reasons to consider the
AMD Opteron 2387

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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
Slightly more l3 cache 6 MB vs 4 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 4 vs 2 Twice as many cores; run more applications at once

Features Key features of the Core i7 3520M  vs Opteron 2387 

clock speed

Core i7 3520M
2.9 GHz
Opteron 2387
2.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Core i7 3520M
3.31 GHz
Opteron 2387
2.8 GHz

overclocked clock speed (water)

Core i7 3520M
2.9 GHz
Opteron 2387
2.8 GHz

Specifications Full list of technical specs

summary

Core i7 3520M  vs
Opteron 2387 
Clock speed 2.9 GHz 2.8 GHz
Cores Dual core Quad core
Socket type
rPGA 988B
F
Is unlocked No No

features

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

power consumption

TDP 35W 75W
Annual home energy cost 8.43 $/year 18.07 $/year
Annual commercial energy cost 30.66 $/year 65.7 $/year
Typical power consumption 28.44W 60.94W

bus

Architecture DMI HyperTransport 3.0

details

Core i7 3520M  vs
Opteron 2387 
Threads 4 4
L2 cache 1 MB 2 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 4 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 22 nm 45 nm
Max CPUs 1 2
Clock multiplier 29 14
Operating temperature Unknown - 105°C 0 - 55°C

overclocking

Overclocked clock speed 3.31 GHz 2.8 GHz
Overclocked clock speed (Water) 2.9 GHz 2.8 GHz
Overclocked clock speed (Air) 3.31 GHz 2.8 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 4000 N/A
Latest DirectX 10.x N/A
Number of displays supported 3 N/A
GPU clock speed 650 MHz N/A
Turbo clock speed 1,250 MHz N/A
3DMark06 5,344.5 N/A
Intel Core i7 3520M
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AMD Opteron 2387
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