Core i5-8250U vs i5-6400
Description
The i5-8250U is based on Kaby Lake architecture while the i5-6400 is based on Skylake.
Using the multithread performance as a reference, the i5-8250U gets a score of 161.3 k points while the i5-6400 gets 174.1 k points.
Summarizing, the i5-6400 is 1.1 times faster than the i5-8250U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i5-8250U gets a score of 161.3 k points while the i5-6400 gets 174.1 k points.
Summarizing, the i5-6400 is 1.1 times faster than the i5-8250U. 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
1.6 GHz
2.7 GHz
Boost frecuency
3.4 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
6144 kB
6144 kB
Date
August 2017
September 2015
Mean monothread perf.
54.31k points
48.05k points
Mean multithread perf.
161.26k 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
i5-8250U
i5-6400
Test#1 (Integers)
3.32k
3.2k (x0.96)
Test#2 (FP)
13.5k
12.81k (x0.95)
Test#3 (Generic, ZIP)
4.11k
4.18k (x1.02)
Test#1 (Memory)
7.42k
4.3k (x0.58)
TOTAL
28.34k
24.49k (x0.86)
Multithread
i5-8250U
i5-6400
Test#1 (Integers)
13.97k
11.45k (x0.82)
Test#2 (FP)
50.8k
46.67k (x0.92)
Test#3 (Generic, ZIP)
14.71k
14.69k (x1)
Test#1 (Memory)
4.76k
5.92k (x1.24)
TOTAL
84.24k
78.73k (x0.93)
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
i5-8250U
i5-6400
Test#1 (Integers)
12.41k
11.56k (x0.93)
Test#2 (FP)
18.11k
16.53k (x0.91)
Test#3 (Generic, ZIP)
4.79k
4.3k (x0.9)
Test#1 (Memory)
8.16k
3.97k (x0.49)
TOTAL
43.46k
36.36k (x0.84)
Multithread
i5-8250U
i5-6400
Test#1 (Integers)
42.48k
43.01k (x1.01)
Test#2 (FP)
60.2k
64.46k (x1.07)
Test#3 (Generic, ZIP)
14.85k
16.14k (x1.09)
Test#1 (Memory)
4.77k
5.91k (x1.24)
TOTAL
122.3k
129.51k (x1.06)
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
i5-8250U
i5-6400
Test#1 (Integers)
12.59k
11.82k (x0.94)
Test#2 (FP)
18.89k
18.36k (x0.97)
Test#3 (Generic, ZIP)
4.65k
4.43k (x0.95)
Test#1 (Memory)
8.2k
4.95k (x0.6)
TOTAL
44.32k
39.56k (x0.89)
Multithread
i5-8250U
i5-6400
Test#1 (Integers)
45.91k
46.04k (x1)
Test#2 (FP)
69.55k
69.47k (x1)
Test#3 (Generic, ZIP)
16.79k
16.33k (x0.97)
Test#1 (Memory)
4.83k
7.74k (x1.6)
TOTAL
137.09k
139.58k (x1.02)
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
i5-8250U
i5-6400
Test#1 (Integers)
22.11k
21.1k (x0.95)
Test#2 (FP)
19.64k
18.28k (x0.93)
Test#3 (Generic, ZIP)
4.54k
4.22k (x0.93)
Test#1 (Memory)
8.03k
4.45k (x0.55)
TOTAL
54.31k
48.05k (x0.88)
Multithread
i5-8250U
i5-6400
Test#1 (Integers)
74.19k
80.03k (x1.08)
Test#2 (FP)
66.27k
71.1k (x1.07)
Test#3 (Generic, ZIP)
15.97k
16.19k (x1.01)
Test#1 (Memory)
4.83k
6.73k (x1.39)
TOTAL
161.26k
174.05k (x1.08)
Performance/W
i5-8250U
i5-6400
Test#1 (Integers)
4946 points/W
1231 points/W
Test#2 (FP)
4418 points/W
1094 points/W
Test#3 (Generic, ZIP)
1065 points/W
249 points/W
Test#1 (Memory)
322 points/W
104 points/W
TOTAL
10751 points/W
2678 points/W
Performance/GHz
i5-8250U
i5-6400
Test#1 (Integers)
6503 points/GHz
6394 points/GHz
Test#2 (FP)
5777 points/GHz
5539 points/GHz
Test#3 (Generic, ZIP)
1334 points/GHz
1279 points/GHz
Test#1 (Memory)
2361 points/GHz
1348 points/GHz
TOTAL
15975 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