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Core i7-7020U vs i3-7100U


Description
Both models i7-7020U and i3-7100U 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 i3-7100U gets 79.6 k points.

Summarizing, the i3-7100U is 1.1 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
806e9
Core
Kaby Lake-U
Kaby Lake-U
Architecture
Base frecuency
2.3 GHz
2.4 GHz
Socket
BGA 1356
BGA 1356
Cores/Threads
2/4
2/4
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
2x256 kB
Cache L3
3072 kB
3072 kB
Date
April 2018
August 2016
Mean monothread perf.
33.63k points
33.38k points
Mean multithread perf.
73.15k points
79.6k 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
i3-7100U
Test#1 (Integers)
2.3k
2.41k (x1.05)
Test#2 (FP)
8.36k
9.77k (x1.17)
Test#3 (Generic, ZIP)
2.75k
3.13k (x1.14)
Test#1 (Memory)
4.64k
3.55k (x0.77)
TOTAL
18.04k
18.86k (x1.05)

Multithread

i7-7020U

i3-7100U
Test#1 (Integers)
4.74k
5k (x1.05)
Test#2 (FP)
17.96k
21.48k (x1.2)
Test#3 (Generic, ZIP)
6.95k
7.39k (x1.06)
Test#1 (Memory)
4.95k
3.18k (x0.64)
TOTAL
34.61k
37.05k (x1.07)

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
i3-7100U
Test#1 (Integers)
8.18k
8.66k (x1.06)
Test#2 (FP)
11.67k
12.31k (x1.05)
Test#3 (Generic, ZIP)
2.97k
3.28k (x1.1)
Test#1 (Memory)
4.68k
3.92k (x0.84)
TOTAL
27.5k
28.16k (x1.02)

Multithread

i7-7020U

i3-7100U
Test#1 (Integers)
17.51k
17.87k (x1.02)
Test#2 (FP)
27.61k
28.59k (x1.04)
Test#3 (Generic, ZIP)
7.39k
7.68k (x1.04)
Test#1 (Memory)
4.78k
3.15k (x0.66)
TOTAL
57.3k
57.28k (x1)

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
i3-7100U
Test#1 (Integers)
8.17k
8.76k (x1.07)
Test#2 (FP)
12.42k
13.49k (x1.09)
Test#3 (Generic, ZIP)
2.87k
3.21k (x1.12)
Test#1 (Memory)
4.68k
3.9k (x0.83)
TOTAL
28.13k
29.36k (x1.04)

Multithread

i7-7020U

i3-7100U
Test#1 (Integers)
17.65k
18.33k (x1.04)
Test#2 (FP)
30.44k
31.08k (x1.02)
Test#3 (Generic, ZIP)
7.19k
7.5k (x1.04)
Test#1 (Memory)
4.79k
3.61k (x0.75)
TOTAL
60.07k
60.52k (x1.01)

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
i3-7100U
Test#1 (Integers)
14.25k
13.46k (x0.94)
Test#2 (FP)
12.72k
13.45k (x1.06)
Test#3 (Generic, ZIP)
2.81k
3.08k (x1.1)
Test#1 (Memory)
3.86k
3.4k (x0.88)
TOTAL
33.63k
33.38k (x0.99)

Multithread

i7-7020U

i3-7100U
Test#1 (Integers)
31.11k
34.95k (x1.12)
Test#2 (FP)
31.15k
33.53k (x1.08)
Test#3 (Generic, ZIP)
6.9k
7.74k (x1.12)
Test#1 (Memory)
3.99k
3.38k (x0.85)
TOTAL
73.15k
79.6k (x1.09)

Performance/W
i7-7020U
i3-7100U
Test#1 (Integers)
2074 points/W
2330 points/W
Test#2 (FP)
2076 points/W
2235 points/W
Test#3 (Generic, ZIP)
460 points/W
516 points/W
Test#1 (Memory)
266 points/W
225 points/W
TOTAL
4877 points/W
5307 points/W

Performance/GHz
i7-7020U
i3-7100U
Test#1 (Integers)
6196 points/GHz
5606 points/GHz
Test#2 (FP)
5528 points/GHz
5606 points/GHz
Test#3 (Generic, ZIP)
1221 points/GHz
1282 points/GHz
Test#1 (Memory)
1679 points/GHz
1415 points/GHz
TOTAL
14624 points/GHz
13909 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