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Differences What are the advantages of each

Front view of Intel Core2 Duo L7700

Reasons to consider the
Intel Core2 Duo L7700

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Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Front view of Intel Celeron 2957U

Reasons to consider the
Intel Celeron 2957U

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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 Core2 Duo L7700 vs Celeron 2957U

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

Core2 Duo L7700
82.8 MB/s
Celeron 2957U
80,200 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo L7700  vs
Celeron 2957U 
Clock speed 1.8 GHz 1.4 GHz
Cores Dual core Dual core
Socket type
479
BGA 1168

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
EM64T
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes No

power consumption

TDP 17W 15W
Annual home energy cost 4.1 $/year 3.61 $/year
Performance per watt 2.73 pt/W 5.11 pt/W
Typical power consumption 13.81W 12.19W

details

Core2 Duo L7700  vs
Celeron 2957U 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 4 MB 0.5 MB
L2 cache per core 2 MB/core 0.25 MB/core
Manufacture process 65 nm 22 nm
Max CPUs 1 1
Clock multiplier 9 14

overclocking

Overclocked clock speed 1.84 GHz 1.41 GHz
Overclocked clock speed (Water) 1.8 GHz 1.4 GHz
Overclocked clock speed (Air) 1.84 GHz 1.41 GHz

integrated graphics

GPU None GPU
Label N/A HD
Number of displays supported N/A 3
GPU clock speed N/A 200 MHz
Turbo clock speed N/A 1,000 MHz

bus

Architecture FSB DMI 2.0
Number of links 1 1
Intel Core2 Duo L7700
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Intel Celeron 2957U
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