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Core i5-7400T vs i7-7500U


Description
Both models i5-7400T and i7-7500U 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 i7-7500U gets 86.9 k points.

Summarizing, the i5-7400T is 1.9 times faster than the i7-7500U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
806e9
Core
Kaby Lake-S
Kaby Lake-U
Architecture
Base frecuency
2.4 GHz
2.7 GHz
Boost frecuency
3 GHz
3.5 GHz
Socket
LGA 1151
BGA1356
Cores/Threads
4/4
2/4
TDP
35 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
6144 kB
4096 kB
Date
January 2017
August 2016
Mean monothread perf.
49.16k points
48.67k points
Mean multithread perf.
163.4k points
86.94k 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
i7-7500U
Test#1 (Integers)
19.7k
20.74k (x1.05)
Test#2 (FP)
17.29k
18.41k (x1.06)
Test#3 (Generic, ZIP)
4.07k
3.98k (x0.98)
Test#1 (Memory)
8.1k
5.54k (x0.68)
TOTAL
49.16k
48.67k (x0.99)

Multithread

i5-7400T

i7-7500U
Test#1 (Integers)
75.27k
37.34k (x0.5)
Test#2 (FP)
66.24k
35.79k (x0.54)
Test#3 (Generic, ZIP)
13.93k
8.34k (x0.6)
Test#1 (Memory)
7.95k
5.48k (x0.69)
TOTAL
163.4k
86.94k (x0.53)

Performance/W
i5-7400T
i7-7500U
Test#1 (Integers)
2151 points/W
2489 points/W
Test#2 (FP)
1893 points/W
2386 points/W
Test#3 (Generic, ZIP)
398 points/W
556 points/W
Test#1 (Memory)
227 points/W
365 points/W
TOTAL
4669 points/W
5796 points/W

Performance/GHz
i5-7400T
i7-7500U
Test#1 (Integers)
6568 points/GHz
5926 points/GHz
Test#2 (FP)
5764 points/GHz
5260 points/GHz
Test#3 (Generic, ZIP)
1356 points/GHz
1137 points/GHz
Test#1 (Memory)
2700 points/GHz
1584 points/GHz
TOTAL
16388 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.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

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.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4