Core i5-8250U vs i7-7020U
Description
Both models i5-8250U and i7-7020U 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 i7-7020U gets 73.1 k points.
Summarizing, the i5-8250U is 2.2 times faster than the i7-7020U. 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 i7-7020U gets 73.1 k points.
Summarizing, the i5-8250U is 2.2 times faster than the i7-7020U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
806ea
806ea
Core
Kaby Lake-R
Kaby Lake-U
Base frecuency
1.6 GHz
2.3 GHz
Boost frecuency
3.4 GHz
2.3 GHz
Socket
BGA1356
BGA 1356
Cores/Threads
4/8
2/4
TDP
15 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
6144 kB
3072 kB
Date
August 2017
April 2018
Mean monothread perf.
54.31k points
33.63k points
Mean multithread perf.
161.26k points
73.15k 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
i7-7020U
Test#1 (Integers)
3.32k
2.3k (x0.69)
Test#2 (FP)
13.5k
8.36k (x0.62)
Test#3 (Generic, ZIP)
4.11k
2.75k (x0.67)
Test#1 (Memory)
7.42k
4.64k (x0.63)
TOTAL
28.34k
18.04k (x0.64)
Multithread
i5-8250U
i7-7020U
Test#1 (Integers)
13.97k
4.74k (x0.34)
Test#2 (FP)
50.8k
17.96k (x0.35)
Test#3 (Generic, ZIP)
14.71k
6.95k (x0.47)
Test#1 (Memory)
4.76k
4.95k (x1.04)
TOTAL
84.24k
34.61k (x0.41)
SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i5-8250U
i7-7020U
Test#1 (Integers)
12.41k
8.18k (x0.66)
Test#2 (FP)
18.11k
11.67k (x0.64)
Test#3 (Generic, ZIP)
4.79k
2.97k (x0.62)
Test#1 (Memory)
8.16k
4.68k (x0.57)
TOTAL
43.46k
27.5k (x0.63)
Multithread
i5-8250U
i7-7020U
Test#1 (Integers)
42.48k
17.51k (x0.41)
Test#2 (FP)
60.2k
27.61k (x0.46)
Test#3 (Generic, ZIP)
14.85k
7.39k (x0.5)
Test#1 (Memory)
4.77k
4.78k (x1)
TOTAL
122.3k
57.3k (x0.47)
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
i7-7020U
Test#1 (Integers)
12.59k
8.17k (x0.65)
Test#2 (FP)
18.89k
12.42k (x0.66)
Test#3 (Generic, ZIP)
4.65k
2.87k (x0.62)
Test#1 (Memory)
8.2k
4.68k (x0.57)
TOTAL
44.32k
28.13k (x0.63)
Multithread
i5-8250U
i7-7020U
Test#1 (Integers)
45.91k
17.65k (x0.38)
Test#2 (FP)
69.55k
30.44k (x0.44)
Test#3 (Generic, ZIP)
16.79k
7.19k (x0.43)
Test#1 (Memory)
4.83k
4.79k (x0.99)
TOTAL
137.09k
60.07k (x0.44)
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
i7-7020U
Test#1 (Integers)
22.11k
14.25k (x0.64)
Test#2 (FP)
19.64k
12.72k (x0.65)
Test#3 (Generic, ZIP)
4.54k
2.81k (x0.62)
Test#1 (Memory)
8.03k
3.86k (x0.48)
TOTAL
54.31k
33.63k (x0.62)
Multithread
i5-8250U
i7-7020U
Test#1 (Integers)
74.19k
31.11k (x0.42)
Test#2 (FP)
66.27k
31.15k (x0.47)
Test#3 (Generic, ZIP)
15.97k
6.9k (x0.43)
Test#1 (Memory)
4.83k
3.99k (x0.83)
TOTAL
161.26k
73.15k (x0.45)
Performance/W
i5-8250U
i7-7020U
Test#1 (Integers)
4946 points/W
2074 points/W
Test#2 (FP)
4418 points/W
2076 points/W
Test#3 (Generic, ZIP)
1065 points/W
460 points/W
Test#1 (Memory)
322 points/W
266 points/W
TOTAL
10751 points/W
4877 points/W
Performance/GHz
i5-8250U
i7-7020U
Test#1 (Integers)
6503 points/GHz
6196 points/GHz
Test#2 (FP)
5777 points/GHz
5528 points/GHz
Test#3 (Generic, ZIP)
1334 points/GHz
1221 points/GHz
Test#1 (Memory)
2361 points/GHz
1679 points/GHz
TOTAL
15975 points/GHz
14624 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