Core i5-6400 vs i5-7400

Description

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

Using the multithread performance as a reference, the i5-6400 gets a score of 174.1 k points while the i5-7400 gets 173.7 k points.

Summarizing, the i5-6400 is 1 times faster than the i5-7400 . To get a proper comparison between both models, take a look to the data shown below.

Specs

i5-6400

i5-7400

CPUID

506e3

906e9

Core

Skylake-S

Kaby Lake-S

Architecture

Skylake

Kaby Lake

Base frecuency

2.7 GHz

3 GHz

Boost frecuency

3.3 GHz

3.5 GHz

Socket

LGA 1151

Cores/Threads

4/4

TDP

65 W

Cache L1 (d+i)

4x32+4x32 kB

Cache L2

4x256 kB

Cache L3

6144 kB

Date

September 2015

September 2016

Mean monothread perf.

48.05k points

52.69k points

Mean multithread perf.

174.05k points

173.7k points

AVX optimized benchmark

The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.

Monothread

i5-6400

i5-7400

Test#1 (Integers)

11.82k

12.72k (x1.08)

Test#2 (FP)

18.36k

19.3k (x1.05)

Test#3 (Generic, ZIP)

4.43k

4.76k (x1.08)

Test#1 (Memory)

4.95k

8.73k (x1.76)

TOTAL

39.56k

45.52k (x1.15)

Multithread

i5-6400

i5-7400

Test#1 (Integers)

46.04k

47.95k (x1.04)

Test#2 (FP)

69.47k

71.98k (x1.04)

Test#3 (Generic, ZIP)

16.33k

17.22k (x1.05)

Test#1 (Memory)

7.74k

8.03k (x1.04)

TOTAL

139.58k

145.18k (x1.04)

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

i5-6400

i5-7400

Test#1 (Integers)

21.1k

22.37k (x1.06)

Test#2 (FP)

18.28k

19.46k (x1.06)

Test#3 (Generic, ZIP)

4.22k

4.44k (x1.05)

Test#1 (Memory)

4.45k

6.41k (x1.44)

TOTAL

48.05k

52.69k (x1.1)

Multithread

i5-6400

i5-7400

Test#1 (Integers)

80.03k

79.57k (x0.99)

Test#2 (FP)

71.1k

71.41k (x1)

Test#3 (Generic, ZIP)

16.19k

16.44k (x1.02)

Test#1 (Memory)

6.73k

6.27k (x0.93)

TOTAL

174.05k

173.7k (x1)

Performance/W

i5-6400

i5-7400

Test#1 (Integers)

1231 points/W

1224 points/W

Test#2 (FP)

1094 points/W

1099 points/W

Test#3 (Generic, ZIP)

249 points/W

253 points/W

Test#1 (Memory)

104 points/W

96 points/W

TOTAL

2678 points/W

2672 points/W

Performance/GHz

i5-6400

i5-7400

Test#1 (Integers)

6394 points/GHz

6392 points/GHz

Test#2 (FP)

5539 points/GHz

5561 points/GHz

Test#3 (Generic, ZIP)

1279 points/GHz

1267 points/GHz

Test#1 (Memory)

1348 points/GHz

1832 points/GHz

TOTAL

14560 points/GHz

15053 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]

Test#2 (FP) [points vs time]

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

Test#1 (Memory) [points vs time]

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]

Test#2 (FP) [points vs time]

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

Test#1 (Memory) [points vs time]

Hardlimit Benchmark Central - Ver. 3.11.4