Core i7-8650U vs i5-6400
Description
The i7-8650U is based on Kaby Lake architecture while the i5-6400 is based on Skylake.
Using the multithread performance as a reference, the i7-8650U gets a score of 173.5 k points while the i5-6400 gets 174.1 k points.
Summarizing, the i5-6400 is 1 times faster than the i7-8650U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-8650U gets a score of 173.5 k points while the i5-6400 gets 174.1 k points.
Summarizing, the i5-6400 is 1 times faster than the i7-8650U. 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
1.9 GHz
2.7 GHz
Boost frecuency
4.2 GHz
3.3 GHz
Socket
BGA 1356
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.
55.86k points
48.05k points
Mean multithread perf.
173.49k 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
i7-8650U
i5-6400
Test#1 (Integers)
21.61k
21.1k (x0.98)
Test#2 (FP)
19.69k
18.28k (x0.93)
Test#3 (Generic, ZIP)
4.61k
4.22k (x0.92)
Test#1 (Memory)
9.95k
4.45k (x0.45)
TOTAL
55.86k
48.05k (x0.86)
Multithread
i7-8650U
i5-6400
Test#1 (Integers)
78.38k
80.03k (x1.02)
Test#2 (FP)
72.02k
71.1k (x0.99)
Test#3 (Generic, ZIP)
16.95k
16.19k (x0.96)
Test#1 (Memory)
6.15k
6.73k (x1.1)
TOTAL
173.49k
174.05k (x1)
Performance/W
i7-8650U
i5-6400
Test#1 (Integers)
5225 points/W
1231 points/W
Test#2 (FP)
4802 points/W
1094 points/W
Test#3 (Generic, ZIP)
1130 points/W
249 points/W
Test#1 (Memory)
410 points/W
104 points/W
TOTAL
11566 points/W
2678 points/W
Performance/GHz
i7-8650U
i5-6400
Test#1 (Integers)
5146 points/GHz
6394 points/GHz
Test#2 (FP)
4689 points/GHz
5539 points/GHz
Test#3 (Generic, ZIP)
1097 points/GHz
1279 points/GHz
Test#1 (Memory)
2368 points/GHz
1348 points/GHz
TOTAL
13300 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