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Core i5-8250U vs i7-8750H


Description
The i5-8250U is based on Kaby Lake architecture while the i7-8750H is based on Coffee Lake.

Using the multithread performance as a reference, the i5-8250U gets a score of 161.3 k points while the i7-8750H gets 231.9 k points.

Summarizing, the i7-8750H is 1.4 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
906ea
Core
Kaby Lake-R
Coffee Lake-H
Architecture
Base frecuency
1.6 GHz
2.2 GHz
Boost frecuency
3.4 GHz
4.1 GHz
Socket
BGA1356
BGA1440
Cores/Threads
4/8
6/12
TDP
15 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
6144 kB
9216 kB
Date
August 2017
April 2018
Mean monothread perf.
54.31k points
53.41k points
Mean multithread perf.
161.26k points
231.9k 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
i5-8250U
i7-8750H
Test#1 (Integers)
3.32k
3.01k (x0.91)
Test#2 (FP)
13.5k
11.68k (x0.87)
Test#3 (Generic, ZIP)
4.11k
3.78k (x0.92)
Test#1 (Memory)
7.42k
5.64k (x0.76)
TOTAL
28.34k
24.12k (x0.85)

Multithread

i5-8250U

i7-8750H
Test#1 (Integers)
13.97k
7.4k (x0.53)
Test#2 (FP)
50.8k
29.99k (x0.59)
Test#3 (Generic, ZIP)
14.71k
9.66k (x0.66)
Test#1 (Memory)
4.76k
5.12k (x1.08)
TOTAL
84.24k
52.18k (x0.62)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i5-8250U
i7-8750H
Test#1 (Integers)
12.59k
15.14k (x1.2)
Test#2 (FP)
18.89k
22.8k (x1.21)
Test#3 (Generic, ZIP)
4.65k
5.5k (x1.18)
Test#1 (Memory)
8.2k
10.97k (x1.34)
TOTAL
44.32k
54.41k (x1.23)

Multithread

i5-8250U

i7-8750H
Test#1 (Integers)
45.91k
82.81k (x1.8)
Test#2 (FP)
69.55k
118.58k (x1.71)
Test#3 (Generic, ZIP)
16.79k
25.08k (x1.49)
Test#1 (Memory)
4.83k
4.86k (x1.01)
TOTAL
137.09k
231.34k (x1.69)

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
i7-8750H
Test#1 (Integers)
22.11k
22.36k (x1.01)
Test#2 (FP)
19.64k
19.33k (x0.98)
Test#3 (Generic, ZIP)
4.54k
4.4k (x0.97)
Test#1 (Memory)
8.03k
7.32k (x0.91)
TOTAL
54.31k
53.41k (x0.98)

Multithread

i5-8250U

i7-8750H
Test#1 (Integers)
74.19k
103.82k (x1.4)
Test#2 (FP)
66.27k
100.47k (x1.52)
Test#3 (Generic, ZIP)
15.97k
23.81k (x1.49)
Test#1 (Memory)
4.83k
3.8k (x0.79)
TOTAL
161.26k
231.9k (x1.44)

Performance/W
i5-8250U
i7-8750H
Test#1 (Integers)
4946 points/W
2307 points/W
Test#2 (FP)
4418 points/W
2233 points/W
Test#3 (Generic, ZIP)
1065 points/W
529 points/W
Test#1 (Memory)
322 points/W
84 points/W
TOTAL
10751 points/W
5153 points/W

Performance/GHz
i5-8250U
i7-8750H
Test#1 (Integers)
6503 points/GHz
5454 points/GHz
Test#2 (FP)
5777 points/GHz
4714 points/GHz
Test#3 (Generic, ZIP)
1334 points/GHz
1073 points/GHz
Test#1 (Memory)
2361 points/GHz
1786 points/GHz
TOTAL
15975 points/GHz
13027 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