Core i5-8250U vs i5-7400T
Description
Both models i5-8250U and i5-7400T are based on Kaby Lake architecture.
The first Kaby Lake CPU was released in August 2016. It uses a 14 nm process and was the first architecture in breaking the previous tick-tock model. Actually, it is not that different from the preceding Skylake: it has 64kB of L1 cache and 256kB L2 cache per core.
Using the multithread performance as a reference, the i5-8250U gets a score of 161.3 k points while the i5-7400T gets 163.4 k points.
Summarizing, the i5-7400T is 1 times faster than the i5-8250U. To get a proper comparison between both models, take a look to the data shown below.
The first Kaby Lake CPU was released in August 2016. It uses a 14 nm process and was the first architecture in breaking the previous tick-tock model. Actually, it is not that different from the preceding Skylake: it has 64kB of L1 cache and 256kB L2 cache per core.
Using the multithread performance as a reference, the i5-8250U gets a score of 161.3 k points while the i5-7400T gets 163.4 k points.
Summarizing, the i5-7400T is 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
906e9
Core
Kaby Lake-R
Kaby Lake-S
Base frecuency
1.6 GHz
2.4 GHz
Boost frecuency
3.4 GHz
3 GHz
Socket
BGA1356
LGA 1151
Cores/Threads
4/8
4/4
TDP
15 W
35 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
January 2017
Mean monothread perf.
54.31k points
49.16k points
Mean multithread perf.
161.26k points
163.4k 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
i5-8250U
i5-7400T
Test#1 (Integers)
22.11k
19.7k (x0.89)
Test#2 (FP)
19.64k
17.29k (x0.88)
Test#3 (Generic, ZIP)
4.54k
4.07k (x0.9)
Test#1 (Memory)
8.03k
8.1k (x1.01)
TOTAL
54.31k
49.16k (x0.91)
Multithread
i5-8250U
i5-7400T
Test#1 (Integers)
74.19k
75.27k (x1.01)
Test#2 (FP)
66.27k
66.24k (x1)
Test#3 (Generic, ZIP)
15.97k
13.93k (x0.87)
Test#1 (Memory)
4.83k
7.95k (x1.65)
TOTAL
161.26k
163.4k (x1.01)
Performance/W
i5-8250U
i5-7400T
Test#1 (Integers)
4946 points/W
2151 points/W
Test#2 (FP)
4418 points/W
1893 points/W
Test#3 (Generic, ZIP)
1065 points/W
398 points/W
Test#1 (Memory)
322 points/W
227 points/W
TOTAL
10751 points/W
4669 points/W
Performance/GHz
i5-8250U
i5-7400T
Test#1 (Integers)
6503 points/GHz
6568 points/GHz
Test#2 (FP)
5777 points/GHz
5764 points/GHz
Test#3 (Generic, ZIP)
1334 points/GHz
1356 points/GHz
Test#1 (Memory)
2361 points/GHz
2700 points/GHz
TOTAL
15975 points/GHz
16388 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