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Core i7-7020U vs i5-5675R


Description
The i7-7020U is based on Kaby Lake architecture while the i5-5675R is based on Broadwell.

Using the multithread performance as a reference, the i7-7020U gets a score of 73.1 k points while the i5-5675R gets 194.2 k points.

Summarizing, the i5-5675R is 2.7 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
40671
Core
Kaby Lake-U
Bradwell-H
Architecture
Base frecuency
2.3 GHz
3.1 GHz
Boost frecuency
2.3 GHz
3.6 GHz
Socket
BGA 1356
BGA1364
Cores/Threads
2/4
4/4
TDP
15 W
65 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
3072 kB
4096 kB
Date
April 2018
June 2015
Mean monothread perf.
33.63k points
51.43k points
Mean multithread perf.
73.15k points
194.2k 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
i5-5675R
Test#1 (Integers)
2.3k
4.14k (x1.8)
Test#2 (FP)
8.36k
14.35k (x1.72)
Test#3 (Generic, ZIP)
2.75k
4.94k (x1.8)
Test#1 (Memory)
4.64k
5.47k (x1.18)
TOTAL
18.04k
28.91k (x1.6)

Multithread

i7-7020U

i5-5675R
Test#1 (Integers)
4.74k
16.02k (x3.38)
Test#2 (FP)
17.96k
54.6k (x3.04)
Test#3 (Generic, ZIP)
6.95k
18.69k (x2.69)
Test#1 (Memory)
4.95k
16.87k (x3.4)
TOTAL
34.61k
106.18k (x3.07)

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
i5-5675R
Test#1 (Integers)
8.18k
12.86k (x1.57)
Test#2 (FP)
11.67k
16.85k (x1.44)
Test#3 (Generic, ZIP)
2.97k
5.19k (x1.75)
Test#1 (Memory)
4.68k
5.49k (x1.17)
TOTAL
27.5k
40.39k (x1.47)

Multithread

i7-7020U

i5-5675R
Test#1 (Integers)
17.51k
50.07k (x2.86)
Test#2 (FP)
27.61k
64.61k (x2.34)
Test#3 (Generic, ZIP)
7.39k
19.84k (x2.68)
Test#1 (Memory)
4.78k
17.09k (x3.58)
TOTAL
57.3k
151.6k (x2.65)

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
i5-5675R
Test#1 (Integers)
8.17k
12.88k (x1.58)
Test#2 (FP)
12.42k
18.27k (x1.47)
Test#3 (Generic, ZIP)
2.87k
5.12k (x1.79)
Test#1 (Memory)
4.68k
5.45k (x1.16)
TOTAL
28.13k
41.72k (x1.48)

Multithread

i7-7020U

i5-5675R
Test#1 (Integers)
17.65k
49.91k (x2.83)
Test#2 (FP)
30.44k
70.3k (x2.31)
Test#3 (Generic, ZIP)
7.19k
19.69k (x2.74)
Test#1 (Memory)
4.79k
16.92k (x3.53)
TOTAL
60.07k
156.83k (x2.61)

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
i5-5675R
Test#1 (Integers)
14.25k
21.91k (x1.54)
Test#2 (FP)
12.72k
18.59k (x1.46)
Test#3 (Generic, ZIP)
2.81k
5.2k (x1.85)
Test#1 (Memory)
3.86k
5.72k (x1.48)
TOTAL
33.63k
51.43k (x1.53)

Multithread

i7-7020U

i5-5675R
Test#1 (Integers)
31.11k
84.92k (x2.73)
Test#2 (FP)
31.15k
72.09k (x2.31)
Test#3 (Generic, ZIP)
6.9k
20.13k (x2.92)
Test#1 (Memory)
3.99k
17.07k (x4.28)
TOTAL
73.15k
194.2k (x2.65)

Performance/W
i7-7020U
i5-5675R
Test#1 (Integers)
2074 points/W
1306 points/W
Test#2 (FP)
2076 points/W
1109 points/W
Test#3 (Generic, ZIP)
460 points/W
310 points/W
Test#1 (Memory)
266 points/W
263 points/W
TOTAL
4877 points/W
2988 points/W

Performance/GHz
i7-7020U
i5-5675R
Test#1 (Integers)
6196 points/GHz
6087 points/GHz
Test#2 (FP)
5528 points/GHz
5164 points/GHz
Test#3 (Generic, ZIP)
1221 points/GHz
1445 points/GHz
Test#1 (Memory)
1679 points/GHz
1590 points/GHz
TOTAL
14624 points/GHz
14286 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