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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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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Front view of Intel Celeron 787

Reasons to consider the
Intel Celeron 787

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

Features Key features of the Core i7 720QM  vs Celeron 787 

clock speed

Core i7 720QM
1.6 GHz
Celeron 787
1.3 GHz

L2 cache

Celeron 787
0.25 MB

L3 cache

overclocked clock speed (air)

Core i7 720QM
2.52 GHz
Celeron 787
1.3 GHz

overclocked clock speed (water)

Core i7 720QM
1.6 GHz
Celeron 787
1.3 GHz

Specifications Full list of technical specs

summary

Core i7 720QM  vs
Celeron 787 
Clock speed 1.6 GHz 1.3 GHz
Cores Quad core Single core
Socket type
rPGA 988A
BGA 1023

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 45W 17W
Annual home energy cost 10.84 $/year 4.1 $/year
Typical power consumption 36.56W 13.81W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 2,500 MT/s 5,000 MT/s

details

Core i7 720QM  vs
Celeron 787 
Architecture x86-64 x86-64
Threads 8 1
L2 cache 1 MB 0.25 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 6 MB 1.5 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1
Clock multiplier 12 13

overclocking

Overclocked clock speed 2.52 GHz 1.3 GHz
Overclocked clock speed (Water) 1.6 GHz 1.3 GHz
Overclocked clock speed (Air) 2.52 GHz 1.3 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics
Number of displays supported N/A 2
GPU clock speed N/A 350 MHz
Turbo clock speed N/A 950 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 21,333.32 MB/s 21,333.32 MB/s
Maximum memory size 8,192 MB 16,384 MB
Intel Core i7 720QM
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Intel Celeron 787
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