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Intel Core i7 3520M

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Front view of Intel Core i7 3520M

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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Significantly higher clock speed 2.9 GHz vs 2.1 GHz Around 40% higher clock speed
Higher turbo clock speed 3.6 GHz vs 3 GHz More than 20% higher turbo clock speed
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More number of displays supported 3 vs 2 1 more number of displays supported
Significantly better overclocked clock speed (Air) 3.31 GHz vs 2.1 GHz Around 60% better overclocked clock speed (Air)
Better PassMark (Single core) score 1,783 vs 1,272 More than 40% better PassMark (Single core) score
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Lower typical power consumption 28.44W vs 36.56W More than 20% lower typical power consumption
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better turbo clock speed 1,250 MHz vs 1,200 MHz Around 5% better turbo clock speed
Newer Jun, 2012 vs Jan, 2011 Release date over 1 years later
Higher Maximum operating temperature 105 °C vs 100 °C 5% higher Maximum operating temperature
Better overclocked clock speed (Water) 2.9 GHz vs 2.1 GHz Around 40% better overclocked clock speed (Water)
Lower annual home energy cost 8.43 $/year vs 10.84 $/year More than 20% lower annual home energy cost
Lower annual commercial energy cost 30.66 $/year vs 39.42 $/year More than 20% lower annual commercial energy cost
Front view of Intel Core i7 2715QE

Reasons to consider the
Intel Core i7 2715QE

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Much better performance per dollar 2.17 pt/$ vs 1.43 pt/$ More than 50% better performance per dollar
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
More threads 8 vs 4 Twice as many threads
Better performance per watt 16.09 pt/W vs 14.13 pt/W Around 15% better performance per watt

Benchmarks Real world tests of Core i7 3520M vs 2715QE

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 3520M
2,440,000 MB/s
Core i7 2715QE
1,690,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 3520M  vs
2715QE 
Clock speed 2.9 GHz 2.1 GHz
Turbo clock speed 3.6 GHz 3 GHz
Cores Dual core Quad core
Socket type
rPGA 988B
BGA 1023
Is unlocked No No

features

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

power consumption

TDP 35W 45W
Annual home energy cost 8.43 $/year 10.84 $/year
Annual commercial energy cost 30.66 $/year 39.42 $/year
Performance per watt 14.13 pt/W 16.09 pt/W
Typical power consumption 28.44W 36.56W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Core i7 3520M  vs
2715QE 
Architecture x86-64 x86-64
Threads 4 8
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
L3 cache 4 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 1
Clock multiplier 29 21
Operating temperature Unknown - 105°C Unknown - 100°C

overclocking

Overclocked clock speed 3.31 GHz 2.1 GHz
Overclocked clock speed (Water) 2.9 GHz 2.1 GHz
Overclocked clock speed (Air) 3.31 GHz 2.1 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 4000 Intel® HD Graphics 3000
Number of displays supported 3 2
GPU clock speed 650 MHz 650 MHz
Turbo clock speed 1,250 MHz 1,200 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
DDR3-1066
DDR3L-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC No Yes
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 16,998.4 MB
Intel Core i7 3520M
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Intel Core i7 2715QE
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