Core i5-7400T vs i7-8665U
Description
The i5-7400T is based on Kaby Lake architecture while the i7-8665U is based on Whiskey Lake.
Using the multithread performance as a reference, the i5-7400T gets a score of 163.4 k points while the i7-8665U gets 109.7 k points.
Summarizing, the i5-7400T is 1.5 times faster than the i7-8665U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i5-7400T gets a score of 163.4 k points while the i7-8665U gets 109.7 k points.
Summarizing, the i5-7400T is 1.5 times faster than the i7-8665U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906e9
806ec
Core
Kaby Lake-S
Whiskey Lake-U
Base frecuency
2.4 GHz
1.9 GHz
Boost frecuency
3 GHz
4.8 GHz
Socket
LGA 1151
BGA 1528
Cores/Threads
4/4
4/8
TDP
35 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
8192 kB
Date
January 2017
April 2019
Mean monothread perf.
49.16k points
35.19k points
Mean multithread perf.
163.4k points
109.72k 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
i5-7400T
i7-8665U
Test#1 (Integers)
19.7k
14.38k (x0.73)
Test#2 (FP)
17.29k
13.43k (x0.78)
Test#3 (Generic, ZIP)
4.07k
2.87k (x0.71)
Test#1 (Memory)
8.1k
4.49k (x0.55)
TOTAL
49.16k
35.19k (x0.72)
Multithread
i5-7400T
i7-8665U
Test#1 (Integers)
75.27k
47.22k (x0.63)
Test#2 (FP)
66.24k
46.99k (x0.71)
Test#3 (Generic, ZIP)
13.93k
10.08k (x0.72)
Test#1 (Memory)
7.95k
5.42k (x0.68)
TOTAL
163.4k
109.72k (x0.67)
Performance/W
i5-7400T
i7-8665U
Test#1 (Integers)
2151 points/W
3148 points/W
Test#2 (FP)
1893 points/W
3133 points/W
Test#3 (Generic, ZIP)
398 points/W
672 points/W
Test#1 (Memory)
227 points/W
361 points/W
TOTAL
4669 points/W
7314 points/W
Performance/GHz
i5-7400T
i7-8665U
Test#1 (Integers)
6568 points/GHz
2996 points/GHz
Test#2 (FP)
5764 points/GHz
2799 points/GHz
Test#3 (Generic, ZIP)
1356 points/GHz
599 points/GHz
Test#1 (Memory)
2700 points/GHz
936 points/GHz
TOTAL
16388 points/GHz
7330 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