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Differences What are the advantages of each

Front view of Intel Core i7 660LM

Reasons to consider the
Intel Core i7 660LM

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CPUBoss is not aware of any important advantages of the Core i7 660LM vs the Core i5 520M.

Front view of Intel Core i5 520M

Reasons to consider the
Intel Core i5 520M

Report a correction

CPUBoss is not aware of any important advantages of the Core i5 520M vs the Core i7 660LM.

Benchmarks Real world tests of Core i7 660LM vs i5 520M

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 660LM
1,370,000 MB/s
Core i5 520M
1,340,000 MB/s

Specifications Full list of technical specs

summary

Core i7 660LM  vs
i5 520M 
Clock speed 2.26 GHz 2.4 GHz
Turbo clock speed 3.06 GHz 2.93 GHz
Cores Dual core Dual core
Socket type
BGA 1288
rPGA 988A
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
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 25W 35W
Annual home energy cost 6.02 $/year 8.43 $/year
Performance per watt 34.1 pt/W 13.49 pt/W
Typical power consumption 20.31W 28.44W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 2,500 MT/s 2,500 MT/s

details

Core i7 660LM  vs
i5 520M 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
L3 cache 4 MB 3 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 32 nm 32 nm
Transistor count 382,000,000 382,000,000
Max CPUs 1 1
Clock multiplier 17 18

overclocking

Overclocked clock speed 2.27 GHz 2.86 GHz
Overclocked clock speed (Water) 2.27 GHz 2.4 GHz
Overclocked clock speed (Air) 2.27 GHz 2.86 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics Intel® HD Graphics
Number of displays supported 2 2
GPU clock speed 266 MHz 500 MHz
Turbo clock speed 566 MHz 766 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1066
DDR3-800
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 17,066.66 MB/s 17,066.66 MB/s
Maximum memory size 8,192 MB 8,499.2 MB
Intel Core i7 660LM
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Intel Core i5 520M
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