Core i5-7400T vs i5-8250U
Description
Both models i5-7400T and i5-8250U 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 i5-7400T gets a score of 163.4 k points while the i5-8250U gets 153.5 k points.
Summarizing, the i5-7400T 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.
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 i5-7400T gets a score of 163.4 k points while the i5-8250U gets 153.5 k points.
Summarizing, the i5-7400T 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
906e9
806ea
Core
Kaby Lake-S
Kaby Lake-R
Base frecuency
2.4 GHz
1.6 GHz
Boost frecuency
3 GHz
3.4 GHz
Socket
LGA 1151
BGA1356
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
6144 kB
Date
January 2017
August 2017
Mean monothread perf.
49.16k points
53.8k points
Mean multithread perf.
163.4k points
153.5k 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
i5-8250U
Test#1 (Integers)
19.7k
22k (x1.12)
Test#2 (FP)
17.29k
19.55k (x1.13)
Test#3 (Generic, ZIP)
4.07k
4.41k (x1.09)
Test#1 (Memory)
8.1k
7.83k (x0.97)
TOTAL
49.16k
53.8k (x1.09)
Multithread
i5-7400T
i5-8250U
Test#1 (Integers)
75.27k
70.15k (x0.93)
Test#2 (FP)
66.24k
63.27k (x0.96)
Test#3 (Generic, ZIP)
13.93k
15.29k (x1.1)
Test#1 (Memory)
7.95k
4.8k (x0.6)
TOTAL
163.4k
153.5k (x0.94)
Performance/W
i5-7400T
i5-8250U
Test#1 (Integers)
2151 points/W
4676 points/W
Test#2 (FP)
1893 points/W
4218 points/W
Test#3 (Generic, ZIP)
398 points/W
1019 points/W
Test#1 (Memory)
227 points/W
320 points/W
TOTAL
4669 points/W
10233 points/W
Performance/GHz
i5-7400T
i5-8250U
Test#1 (Integers)
6568 points/GHz
6471 points/GHz
Test#2 (FP)
5764 points/GHz
5750 points/GHz
Test#3 (Generic, ZIP)
1356 points/GHz
1298 points/GHz
Test#1 (Memory)
2700 points/GHz
2304 points/GHz
TOTAL
16388 points/GHz
15823 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