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Intel Core i7 720QM

Front view of Intel Core i7 720QM
Front view of Intel Core i7 640M

Intel Core i7 640M

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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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CPUBoss is not aware of any important advantages of the 720QM vs the 640M.
Front view of Intel Core i7 640M

Reasons to consider the
Intel Core i7 640M

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required

Benchmarks Real world tests of Core i7 720QM vs 640M

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 720QM
4,379
Core i7 640M
4,385

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i7 720QM
1,543
Core i7 640M
2,187

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 720QM
105,600 MB/s
Core i7 640M
1,570,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 720QM
4,189
Core i7 640M
4,158

GeekBench (64-bit) Data courtesy Primate Labs

Core i7 720QM
4,842
Core i7 640M
4,694

GeekBench

Core i7 720QM
5,786
Core i7 640M
6,359

PassMark Data courtesy Passmark

Core i7 720QM
3,029
Core i7 640M
2,865

PassMark (Single Core)

Core i7 720QM
872
Core i7 640M
1,307

Specifications Full list of technical specs

summary

 Core i7 720QM  vs
640M 
Clock speed 1.6 GHz 2.8 GHz
Turbo clock speed 2.8 GHz 3.46 GHz
Cores Quad core Dual core
Socket type
rPGA 988A
BGA 1288
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 45W 35W
Annual home energy cost 10.84 $/year 8.43 $/year
Performance per watt 2.85 pt/W 18.3 pt/W
Typical power consumption 36.56W 28.44W

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

details

 Core i7 720QM  vs
640M 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 6 MB 4 MB
L3 cache per core 1.5 MB/core 2 MB/core
Manufacture process 45 nm 32 nm
Transistor count 774,000,000 382,000,000
Max CPUs 1 1
Clock multiplier 12 21

overclocking
Overclocked clock speed 2.52 GHz 3.37 GHz
Overclocked clock speed (Water) 1.6 GHz 2.8 GHz
Overclocked clock speed (Air) 2.52 GHz 3.37 GHz

integrated graphics
GPU None GPU
Label N/A Intel® HD Graphics
Number of displays supported N/A 2
GPU clock speed N/A 500 MHz
Turbo clock speed N/A 766 MHz

memory controller
Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 21,333.32 MB/s 17,066.66 MB/s
Maximum memory size 8,192 MB 8,192 MB
Intel Core i7 720QM
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Intel Core i7 640M
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