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Differences What are the advantages of each

Front view of Intel Core i7 6700T

Reasons to consider the
Intel Core i7 6700T

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Much better 3DMark06 CPU score 67.5 vs 52.8 Around 30% better 3DMark06 CPU score
Higher turbo clock speed 3.6 GHz vs 2.8 GHz Around 30% higher turbo clock speed
Higher clock speed 2.8 GHz vs 2.2 GHz More than 25% higher clock speed
Much better geekbench 3 Multi-Core score 12,839 vs 4,389 Around 3x better geekbench 3 Multi-Core score
Much better geekbench 3 AES single core score 4,210 MB/s vs 853 MB/s Around 5x better geekbench 3 AES single core score
Significantly better turbo clock speed 1,100 MHz vs 950 MHz More than 15% better turbo clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly better performance per watt 7.07 pt/W vs 2.9 pt/W Around 2.5x better performance per watt
Slightly more l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 8 vs 4 Twice as many threads
Better performance per dollar 0.82 pt/$ vs 0.6 pt/$ More than 35% better performance per dollar
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Front view of Intel Core i5 6400T

Reasons to consider the
Intel Core i5 6400T

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CPUBoss is not aware of any important advantages of the Core i5 6400T vs the Core i7 6700T.

Benchmarks Real world tests of Core i7 6700T vs i5 6400T

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 6700T
4,210 MB/s
Core i5 6400T
853 MB/s

3D Mark 06 (CPU)

Specifications Full list of technical specs

summary

Core i7 6700T  vs
i5 6400T 
Clock speed 2.8 GHz 2.2 GHz
Turbo clock speed 3.6 GHz 2.8 GHz
Cores Quad core Quad core
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 65,536 MB 65,536 MB

details

Core i7 6700T  vs
i5 6400T 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 14 nm 14 nm
Max CPUs 1 1
Operating temperature Unknown - 66°C Unknown - 66°C

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 530 Intel® HD Graphics 530
Number of displays supported 3 3
GPU clock speed 350 MHz 350 MHz
Turbo clock speed 1,100 MHz 950 MHz

power consumption

TDP 35W 35W
Annual home energy cost 8.43 $/year 8.43 $/year
Annual commercial energy cost 30.66 $/year 30.66 $/year
Performance per watt 7.07 pt/W 2.9 pt/W
Typical power consumption 28.44W 28.44W

bus

Architecture FSB FSB
Number of links 1 1
Transfer rate 8,000 MT/s 8,000 MT/s
Intel Core i7 6700T
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Intel Core i5 6400T
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