Core i7-7020U vs i5-8250U
Description
Both models i7-7020U 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 i7-7020U gets a score of 73.1 k points while the i5-8250U gets 161.3 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 i7-7020U gets a score of 73.1 k points while the i5-8250U gets 161.3 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-U
Kaby Lake-R
Base frecuency
2.3 GHz
1.6 GHz
Boost frecuency
2.3 GHz
3.4 GHz
Socket
BGA 1356
BGA1356
Cores/Threads
2/4
4/8
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
3072 kB
6144 kB
Date
April 2018
August 2017
Mean monothread perf.
33.63k points
54.31k points
Mean multithread perf.
73.15k points
161.26k 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
i7-7020U
i5-8250U
Test#1 (Integers)
2.3k
3.32k (x1.45)
Test#2 (FP)
8.36k
13.5k (x1.62)
Test#3 (Generic, ZIP)
2.75k
4.11k (x1.49)
Test#1 (Memory)
4.64k
7.42k (x1.6)
TOTAL
18.04k
28.34k (x1.57)
Multithread
i7-7020U
i5-8250U
Test#1 (Integers)
4.74k
13.97k (x2.94)
Test#2 (FP)
17.96k
50.8k (x2.83)
Test#3 (Generic, ZIP)
6.95k
14.71k (x2.12)
Test#1 (Memory)
4.95k
4.76k (x0.96)
TOTAL
34.61k
84.24k (x2.43)
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
i7-7020U
i5-8250U
Test#1 (Integers)
8.18k
12.41k (x1.52)
Test#2 (FP)
11.67k
18.11k (x1.55)
Test#3 (Generic, ZIP)
2.97k
4.79k (x1.61)
Test#1 (Memory)
4.68k
8.16k (x1.74)
TOTAL
27.5k
43.46k (x1.58)
Multithread
i7-7020U
i5-8250U
Test#1 (Integers)
17.51k
42.48k (x2.43)
Test#2 (FP)
27.61k
60.2k (x2.18)
Test#3 (Generic, ZIP)
7.39k
14.85k (x2.01)
Test#1 (Memory)
4.78k
4.77k (x1)
TOTAL
57.3k
122.3k (x2.13)
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
i7-7020U
i5-8250U
Test#1 (Integers)
8.17k
12.59k (x1.54)
Test#2 (FP)
12.42k
18.89k (x1.52)
Test#3 (Generic, ZIP)
2.87k
4.65k (x1.62)
Test#1 (Memory)
4.68k
8.2k (x1.75)
TOTAL
28.13k
44.32k (x1.58)
Multithread
i7-7020U
i5-8250U
Test#1 (Integers)
17.65k
45.91k (x2.6)
Test#2 (FP)
30.44k
69.55k (x2.28)
Test#3 (Generic, ZIP)
7.19k
16.79k (x2.34)
Test#1 (Memory)
4.79k
4.83k (x1.01)
TOTAL
60.07k
137.09k (x2.28)
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
i7-7020U
i5-8250U
Test#1 (Integers)
14.25k
22.11k (x1.55)
Test#2 (FP)
12.72k
19.64k (x1.54)
Test#3 (Generic, ZIP)
2.81k
4.54k (x1.62)
Test#1 (Memory)
3.86k
8.03k (x2.08)
TOTAL
33.63k
54.31k (x1.61)
Multithread
i7-7020U
i5-8250U
Test#1 (Integers)
31.11k
74.19k (x2.38)
Test#2 (FP)
31.15k
66.27k (x2.13)
Test#3 (Generic, ZIP)
6.9k
15.97k (x2.31)
Test#1 (Memory)
3.99k
4.83k (x1.21)
TOTAL
73.15k
161.26k (x2.2)
Performance/W
i7-7020U
i5-8250U
Test#1 (Integers)
2074 points/W
4946 points/W
Test#2 (FP)
2076 points/W
4418 points/W
Test#3 (Generic, ZIP)
460 points/W
1065 points/W
Test#1 (Memory)
266 points/W
322 points/W
TOTAL
4877 points/W
10751 points/W
Performance/GHz
i7-7020U
i5-8250U
Test#1 (Integers)
6196 points/GHz
6503 points/GHz
Test#2 (FP)
5528 points/GHz
5777 points/GHz
Test#3 (Generic, ZIP)
1221 points/GHz
1334 points/GHz
Test#1 (Memory)
1679 points/GHz
2361 points/GHz
TOTAL
14624 points/GHz
15975 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