| | | | | | |

Core i5-7400T vs i5-6400


Description
The i5-7400T is based on Kaby Lake architecture while the i5-6400 is based on Skylake.

Using the multithread performance as a reference, the i5-7400T gets a score of 163.4 k points while the i5-6400 gets 174.1 k points.

Summarizing, the i5-6400 is 1.1 times faster than the i5-7400T. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
506e3
Core
Kaby Lake-S
Skylake-S
Architecture
Base frecuency
2.4 GHz
2.7 GHz
Boost frecuency
3 GHz
3.3 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/4
4/4
TDP
35 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
6144 kB
Date
January 2017
September 2015
Mean monothread perf.
49.16k points
48.05k points
Mean multithread perf.
163.4k points
174.05k points

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i5-7400T
i5-6400
Test#1 (Integers)
19.7k
21.1k (x1.07)
Test#2 (FP)
17.29k
18.28k (x1.06)
Test#3 (Generic, ZIP)
4.07k
4.22k (x1.04)
Test#1 (Memory)
8.1k
4.45k (x0.55)
TOTAL
49.16k
48.05k (x0.98)

Multithread

i5-7400T

i5-6400
Test#1 (Integers)
75.27k
80.03k (x1.06)
Test#2 (FP)
66.24k
71.1k (x1.07)
Test#3 (Generic, ZIP)
13.93k
16.19k (x1.16)
Test#1 (Memory)
7.95k
6.73k (x0.85)
TOTAL
163.4k
174.05k (x1.07)

Performance/W
i5-7400T
i5-6400
Test#1 (Integers)
2151 points/W
1231 points/W
Test#2 (FP)
1893 points/W
1094 points/W
Test#3 (Generic, ZIP)
398 points/W
249 points/W
Test#1 (Memory)
227 points/W
104 points/W
TOTAL
4669 points/W
2678 points/W

Performance/GHz
i5-7400T
i5-6400
Test#1 (Integers)
6568 points/GHz
6394 points/GHz
Test#2 (FP)
5764 points/GHz
5539 points/GHz
Test#3 (Generic, ZIP)
1356 points/GHz
1279 points/GHz
Test#1 (Memory)
2700 points/GHz
1348 points/GHz
TOTAL
16388 points/GHz
14560 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4