Core i5-8400 vs i7-7500U
Description
The i5-8400 is based on Coffee Lake architecture while the i7-7500U is based on Kaby Lake.
Using the multithread performance as a reference, the i5-8400 gets a score of 289.6 k points while the i7-7500U gets 86.9 k points.
Summarizing, the i5-8400 is 3.3 times faster than the i7-7500U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i5-8400 gets a score of 289.6 k points while the i7-7500U gets 86.9 k points.
Summarizing, the i5-8400 is 3.3 times faster than the i7-7500U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ea
806e9
Core
Coffee Lake-S
Kaby Lake-U
Base frecuency
2.8 GHz
2.7 GHz
Boost frecuency
4 GHz
3.5 GHz
Socket
LGA 1151
BGA1356
Cores/Threads
6/6
2/4
TDP
65 W
15 W
Cache L1 (d+i)
6x32+6x32 kB
2x32+2x32 kB
Cache L2
6x256 kB
2x256 kB
Cache L3
9216 kB
4096 kB
Date
September 2017
August 2016
Mean monothread perf.
64.98k points
48.67k points
Mean multithread perf.
289.61k points
86.94k 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
i5-8400
i7-7500U
Test#1 (Integers)
4.08k
3.53k (x0.86)
Test#2 (FP)
14.96k
14.67k (x0.98)
Test#3 (Generic, ZIP)
4.98k
4.84k (x0.97)
Test#1 (Memory)
10.29k
6.26k (x0.61)
TOTAL
34.31k
29.29k (x0.85)
Multithread
i5-8400
i7-7500U
Test#1 (Integers)
21.54k
7.26k (x0.34)
Test#2 (FP)
85.13k
35.04k (x0.41)
Test#3 (Generic, ZIP)
28.24k
11.28k (x0.4)
Test#1 (Memory)
4.08k
5.69k (x1.4)
TOTAL
139k
59.27k (x0.43)
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
i5-8400
i7-7500U
Test#1 (Integers)
26.5k
20.74k (x0.78)
Test#2 (FP)
23.11k
18.41k (x0.8)
Test#3 (Generic, ZIP)
5.2k
3.98k (x0.77)
Test#1 (Memory)
10.16k
5.54k (x0.55)
TOTAL
64.98k
48.67k (x0.75)
Multithread
i5-8400
i7-7500U
Test#1 (Integers)
135.08k
37.34k (x0.28)
Test#2 (FP)
121.49k
35.79k (x0.29)
Test#3 (Generic, ZIP)
27.53k
8.34k (x0.3)
Test#1 (Memory)
5.5k
5.48k (x1)
TOTAL
289.61k
86.94k (x0.3)
Performance/W
i5-8400
i7-7500U
Test#1 (Integers)
2078 points/W
2489 points/W
Test#2 (FP)
1869 points/W
2386 points/W
Test#3 (Generic, ZIP)
424 points/W
556 points/W
Test#1 (Memory)
85 points/W
365 points/W
TOTAL
4455 points/W
5796 points/W
Performance/GHz
i5-8400
i7-7500U
Test#1 (Integers)
6626 points/GHz
5926 points/GHz
Test#2 (FP)
5778 points/GHz
5260 points/GHz
Test#3 (Generic, ZIP)
1300 points/GHz
1137 points/GHz
Test#1 (Memory)
2541 points/GHz
1584 points/GHz
TOTAL
16245 points/GHz
13907 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