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Differences What are the advantages of each

Front view of Intel Core i7 620M

Reasons to consider the
Intel Core i7 620M

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Higher clock speed 2.66 GHz vs 2 GHz Around 35% higher clock speed
Higher turbo clock speed 3.33 GHz vs 2.8 GHz Around 20% higher turbo clock speed
Significantly better turbo clock speed 766 MHz vs 566 MHz More than 35% better turbo clock speed
Significantly higher GPU clock speed 500 MHz vs 266 MHz Around 90% higher GPU clock speed
Much better overclocked clock speed (Air) 3.34 GHz vs 2 GHz More than 65% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 2.67 GHz vs 2 GHz Around 35% better overclocked clock speed (Water)
Front view of Intel Core i7 620LE

Reasons to consider the
Intel Core i7 620LE

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More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Lower typical power consumption 20.31W vs 28.44W Around 30% lower typical power consumption
Lower annual commercial energy cost 21.9 $/year vs 30.66 $/year Around 30% lower annual commercial energy cost
Lower annual home energy cost 6.02 $/year vs 8.43 $/year Around 30% lower annual home energy cost

Features Key features of the Core i7 620M  vs 620LE 

clock speed

Core i7 620M
2.66 GHz

turbo clock speed

Core i7 620M
3.33 GHz
Core i7 620LE
2.8 GHz

L2 cache

gpu clock speed

Core i7 620M
500 MHz
Core i7 620LE
266 MHz

overclocked clock speed (air)

Core i7 620M
3.34 GHz

overclocked clock speed (water)

Core i7 620M
2.67 GHz

Specifications Full list of technical specs

summary

Core i7 620M  vs
620LE 
Clock speed 2.66 GHz 2 GHz
Turbo clock speed 3.33 GHz 2.8 GHz
Cores Dual core Dual core
Socket type
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 35W 25W
Annual home energy cost 8.43 $/year 6.02 $/year
Annual commercial energy cost 30.66 $/year 21.9 $/year
Typical power consumption 28.44W 20.31W

bus

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

details

Core i7 620M  vs
620LE 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 4 MB 4 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 32 nm
Transistor count 382,000,000 382,000,000
Max CPUs 1 1
Clock multiplier 20 15

overclocking

Overclocked clock speed 3.34 GHz 2 GHz
Overclocked clock speed (Water) 2.67 GHz 2 GHz
Overclocked clock speed (Air) 3.34 GHz 2 GHz

integrated graphics

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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1066
DDR3-800
DDR3
Channels Dual Channel Dual Channel
Supports ECC No Yes
Maximum bandwidth 17,066.66 MB/s 17,066.66 MB/s
Maximum memory size 8,192 MB 9,000.96 MB
Intel Core i7 620M
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Intel Core i7 620LE
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