Core i7-8550U vs i5-6400
Description
The i7-8550U is based on Kaby Lake architecture while the i5-6400 is based on Skylake.
Using the multithread performance as a reference, the i7-8550U gets a score of 166.1 k points while the i5-6400 gets 174.1 k points.
Summarizing, the i5-6400 is 1 times faster than the i7-8550U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-8550U gets a score of 166.1 k points while the i5-6400 gets 174.1 k points.
Summarizing, the i5-6400 is 1 times faster than the i7-8550U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
806ea
506e3
Core
Kaby Lake-R
Skylake-S
Base frecuency
1.8 GHz
2.7 GHz
Boost frecuency
4 GHz
3.3 GHz
Socket
BGA1356
LGA 1151
Cores/Threads
4/8
4/4
TDP
15 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
August 2017
September 2015
Mean monothread perf.
64.2k points
48.05k points
Mean multithread perf.
166.12k points
174.05k points
Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-8550U
i5-6400
Test#1 (Integers)
3.91k
3.2k (x0.82)
Test#2 (FP)
15.98k
12.81k (x0.8)
Test#3 (Generic, ZIP)
5.11k
4.18k (x0.82)
Test#1 (Memory)
11.05k
4.3k (x0.39)
TOTAL
36.05k
24.49k (x0.68)
Multithread
i7-8550U
i5-6400
Test#1 (Integers)
11.76k
11.45k (x0.97)
Test#2 (FP)
50.15k
46.67k (x0.93)
Test#3 (Generic, ZIP)
16.76k
14.69k (x0.88)
Test#1 (Memory)
4.17k
5.92k (x1.42)
TOTAL
82.84k
78.73k (x0.95)
SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-8550U
i5-6400
Test#1 (Integers)
12.93k
11.56k (x0.89)
Test#2 (FP)
20.59k
16.53k (x0.8)
Test#3 (Generic, ZIP)
5.41k
4.3k (x0.79)
Test#1 (Memory)
10.48k
3.97k (x0.38)
TOTAL
49.41k
36.36k (x0.74)
Multithread
i7-8550U
i5-6400
Test#1 (Integers)
41.11k
43.01k (x1.05)
Test#2 (FP)
65.04k
64.46k (x0.99)
Test#3 (Generic, ZIP)
17.53k
16.14k (x0.92)
Test#1 (Memory)
4.22k
5.91k (x1.4)
TOTAL
127.9k
129.51k (x1.01)
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
i7-8550U
i5-6400
Test#1 (Integers)
13.15k
11.82k (x0.9)
Test#2 (FP)
19.7k
18.36k (x0.93)
Test#3 (Generic, ZIP)
5.1k
4.43k (x0.87)
Test#1 (Memory)
9.21k
4.95k (x0.54)
TOTAL
47.16k
39.56k (x0.84)
Multithread
i7-8550U
i5-6400
Test#1 (Integers)
34.13k
46.04k (x1.35)
Test#2 (FP)
53.79k
69.47k (x1.29)
Test#3 (Generic, ZIP)
13.91k
16.33k (x1.17)
Test#1 (Memory)
4.12k
7.74k (x1.88)
TOTAL
105.95k
139.58k (x1.32)
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
i7-8550U
i5-6400
Test#1 (Integers)
25.37k
21.1k (x0.83)
Test#2 (FP)
22.6k
18.28k (x0.81)
Test#3 (Generic, ZIP)
5.13k
4.22k (x0.82)
Test#1 (Memory)
11.1k
4.45k (x0.4)
TOTAL
64.2k
48.05k (x0.75)
Multithread
i7-8550U
i5-6400
Test#1 (Integers)
72.82k
80.03k (x1.1)
Test#2 (FP)
71.71k
71.1k (x0.99)
Test#3 (Generic, ZIP)
17.35k
16.19k (x0.93)
Test#1 (Memory)
4.24k
6.73k (x1.59)
TOTAL
166.12k
174.05k (x1.05)
Performance/W
i7-8550U
i5-6400
Test#1 (Integers)
4855 points/W
1231 points/W
Test#2 (FP)
4781 points/W
1094 points/W
Test#3 (Generic, ZIP)
1157 points/W
249 points/W
Test#1 (Memory)
282 points/W
104 points/W
TOTAL
11075 points/W
2678 points/W
Performance/GHz
i7-8550U
i5-6400
Test#1 (Integers)
6343 points/GHz
6394 points/GHz
Test#2 (FP)
5650 points/GHz
5539 points/GHz
Test#3 (Generic, ZIP)
1282 points/GHz
1279 points/GHz
Test#1 (Memory)
2774 points/GHz
1348 points/GHz
TOTAL
16049 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.
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.
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