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Differences What are the advantages of each

Front view of Intel Core i7 4650U

Reasons to consider the
Intel Core i7 4650U

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Front view of Intel Core i5 4350U

Reasons to consider the
Intel Core i5 4350U

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CPUBoss is not aware of any important advantages of the Core i5 4350U vs the Core i7 4650U.

Benchmarks Real world tests of Core i7 4650U vs i5 4350U

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 4650U
4,100,000 MB/s
Core i5 4350U
3,360 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 4650U  vs
i5 4350U 
Clock speed 1.7 GHz 1.4 GHz
Turbo clock speed 3.3 GHz 2.9 GHz
Cores Dual core Dual core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 15W 15W
Annual home energy cost 3.61 $/year 3.61 $/year
Performance per watt 68.97 pt/W 8.56 pt/W
Typical power consumption 12.19W 12.19W

bus

Architecture DMI 2.0 DMI 2.0
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Core i7 4650U  vs
i5 4350U 
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 3 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1
Operating temperature Unknown - 72.6°C Unknown - 100°C

overclocking

Overclocked clock speed 3.12 GHz 1.4 GHz
Overclocked clock speed (Water) 1.7 GHz 1.4 GHz
Overclocked clock speed (Air) 3.12 GHz 1.4 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 5000 Intel® HD Graphics 5000
Number of displays supported 3 3
GPU clock speed 200 MHz 200 MHz
Turbo clock speed 1,100 MHz 1,100 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR2-1066
DDR3
DDR3-800
DDR2-800
DDR2-667
DDR2
DDR
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 16,384 MB 16,384 MB
Intel Core i7 4650U
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Intel Core i5 4350U
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