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Differences What are the advantages of each

Front view of Intel Core i7 6500U

Reasons to consider the
Intel Core i7 6500U

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Higher clock speed 2.5 GHz vs 2.2 GHz Around 15% higher clock speed
Better turbo clock speed 1,050 MHz vs 1,000 MHz 5% better turbo clock speed
Newer Jul, 2015 vs Jan, 2015 Release date 6 months later
Better overclocked clock speed (Water) 3.1 GHz vs 2.2 GHz More than 40% better overclocked clock speed (Water)
Front view of Intel Core i7 5650U

Reasons to consider the
Intel Core i7 5650U

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Much better performance per watt 101.08 pt/W vs 11.8 pt/W More than 8.5x better performance per watt
Much better performance per dollar 3.56 pt/$ vs 0.18 pt/$ Around 20x better performance per dollar
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing

Benchmarks Real world tests of Core i7 6500U vs 5650U

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 6500U
3,830 MB/s
Core i7 5650U
4,080,000 MB/s

3D Mark 06 (CPU)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6500U  vs
5650U 
Clock speed 2.5 GHz 2.2 GHz
Turbo clock speed 3.1 GHz 3.1 GHz
Cores Dual core Dual core
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing No 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
Annual commercial energy cost 13.14 $/year 13.14 $/year
Performance per watt 11.8 pt/W 101.08 pt/W
Typical power consumption 12.19W 12.19W

bus

Architecture FSB DMI 2.0
Number of links 1 1
Transfer rate 4,000 MT/s 5,000 MT/s

details

Core i7 6500U  vs
5650U 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 0.5 MB 0.5 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 4 MB 4 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 14 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.2 GHz 2.98 GHz
Overclocked clock speed (Water) 3.1 GHz 2.2 GHz
Overclocked clock speed (Air) 3.2 GHz 2.98 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 520 Intel® HD Graphics 6000
Number of displays supported 3 3
GPU clock speed 300 MHz 300 MHz
Turbo clock speed 1,050 MHz 1,000 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3-1600
DDR3
Channels Dual Channel Dual Channel
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 16,384 MB
Intel Core i7 6500U
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Intel Core i7 5650U
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