Core i5-7400 vs i5-6400

Description

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

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

i5-7400

i5-6400

CPUID

906e9

506e3

Core

Kaby Lake-S

Skylake-S

Architecture

Kaby Lake

Skylake

Base frecuency

3 GHz

2.7 GHz

Boost frecuency

3.5 GHz

3.3 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 2016

September 2015

Mean monothread perf.

52.69k points

48.05k points

Mean multithread perf.

173.7k points

174.05k 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

i5-7400

i5-6400

Test#1 (Integers)

12.72k

11.82k (x0.93)

Test#2 (FP)

19.3k

18.36k (x0.95)

Test#3 (Generic, ZIP)

4.76k

4.43k (x0.93)

Test#1 (Memory)

8.73k

4.95k (x0.57)

TOTAL

45.52k

39.56k (x0.87)

Multithread

i5-7400

i5-6400

Test#1 (Integers)

47.95k

46.04k (x0.96)

Test#2 (FP)

71.98k

69.47k (x0.97)

Test#3 (Generic, ZIP)

17.22k

16.33k (x0.95)

Test#1 (Memory)

8.03k

7.74k (x0.96)

TOTAL

145.18k

139.58k (x0.96)

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

i5-7400

i5-6400

Test#1 (Integers)

22.37k

21.1k (x0.94)

Test#2 (FP)

19.46k

18.28k (x0.94)

Test#3 (Generic, ZIP)

4.44k

4.22k (x0.95)

Test#1 (Memory)

6.41k

4.45k (x0.69)

TOTAL

52.69k

48.05k (x0.91)

Multithread

i5-7400

i5-6400

Test#1 (Integers)

79.57k

80.03k (x1.01)

Test#2 (FP)

71.41k

71.1k (x1)

Test#3 (Generic, ZIP)

16.44k

16.19k (x0.98)

Test#1 (Memory)

6.27k

6.73k (x1.07)

TOTAL

173.7k

174.05k (x1)

Performance/W

i5-7400

i5-6400

Test#1 (Integers)

1224 points/W

1231 points/W

Test#2 (FP)

1099 points/W

1094 points/W

Test#3 (Generic, ZIP)

253 points/W

249 points/W

Test#1 (Memory)

96 points/W

104 points/W

TOTAL

2672 points/W

2678 points/W

Performance/GHz

i5-7400

i5-6400

Test#1 (Integers)

6392 points/GHz

6394 points/GHz

Test#2 (FP)

5561 points/GHz

5539 points/GHz

Test#3 (Generic, ZIP)

1267 points/GHz

1279 points/GHz

Test#1 (Memory)

1832 points/GHz

1348 points/GHz

TOTAL

15053 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]

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