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Core i7-8550U vs i5-5675R


Description
The i7-8550U is based on Kaby Lake architecture while the i5-5675R is based on Broadwell.

Using the multithread performance as a reference, the i7-8550U gets a score of 166.1 k points while the i5-5675R gets 194.2 k points.

Summarizing, the i5-5675R is 1.2 times faster than the i7-8550U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ea
40671
Core
Kaby Lake-R
Bradwell-H
Architecture
Base frecuency
1.8 GHz
3.1 GHz
Boost frecuency
4 GHz
3.6 GHz
Socket
BGA1356
BGA1364
Cores/Threads
4/8
4/4
TDP
15 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
4096 kB
Date
August 2017
June 2015
Mean monothread perf.
64.2k points
51.43k points
Mean multithread perf.
166.12k 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
i7-8550U
i5-5675R
Test#1 (Integers)
3.91k
4.14k (x1.06)
Test#2 (FP)
15.98k
14.35k (x0.9)
Test#3 (Generic, ZIP)
5.11k
4.94k (x0.97)
Test#1 (Memory)
11.05k
5.47k (x0.5)
TOTAL
36.05k
28.91k (x0.8)

Multithread

i7-8550U

i5-5675R
Test#1 (Integers)
11.76k
16.02k (x1.36)
Test#2 (FP)
50.15k
54.6k (x1.09)
Test#3 (Generic, ZIP)
16.76k
18.69k (x1.12)
Test#1 (Memory)
4.17k
16.87k (x4.05)
TOTAL
82.84k
106.18k (x1.28)

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
i7-8550U
i5-5675R
Test#1 (Integers)
12.93k
12.86k (x0.99)
Test#2 (FP)
20.59k
16.85k (x0.82)
Test#3 (Generic, ZIP)
5.41k
5.19k (x0.96)
Test#1 (Memory)
10.48k
5.49k (x0.52)
TOTAL
49.41k
40.39k (x0.82)

Multithread

i7-8550U

i5-5675R
Test#1 (Integers)
41.11k
50.07k (x1.22)
Test#2 (FP)
65.04k
64.61k (x0.99)
Test#3 (Generic, ZIP)
17.53k
19.84k (x1.13)
Test#1 (Memory)
4.22k
17.09k (x4.05)
TOTAL
127.9k
151.6k (x1.19)

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
i7-8550U
i5-5675R
Test#1 (Integers)
13.15k
12.88k (x0.98)
Test#2 (FP)
19.7k
18.27k (x0.93)
Test#3 (Generic, ZIP)
5.1k
5.12k (x1)
Test#1 (Memory)
9.21k
5.45k (x0.59)
TOTAL
47.16k
41.72k (x0.88)

Multithread

i7-8550U

i5-5675R
Test#1 (Integers)
34.13k
49.91k (x1.46)
Test#2 (FP)
53.79k
70.3k (x1.31)
Test#3 (Generic, ZIP)
13.91k
19.69k (x1.42)
Test#1 (Memory)
4.12k
16.92k (x4.1)
TOTAL
105.95k
156.83k (x1.48)

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
i7-8550U
i5-5675R
Test#1 (Integers)
25.37k
21.91k (x0.86)
Test#2 (FP)
22.6k
18.59k (x0.82)
Test#3 (Generic, ZIP)
5.13k
5.2k (x1.01)
Test#1 (Memory)
11.1k
5.72k (x0.52)
TOTAL
64.2k
51.43k (x0.8)

Multithread

i7-8550U

i5-5675R
Test#1 (Integers)
72.82k
84.92k (x1.17)
Test#2 (FP)
71.71k
72.09k (x1.01)
Test#3 (Generic, ZIP)
17.35k
20.13k (x1.16)
Test#1 (Memory)
4.24k
17.07k (x4.03)
TOTAL
166.12k
194.2k (x1.17)

Performance/W
i7-8550U
i5-5675R
Test#1 (Integers)
4855 points/W
1306 points/W
Test#2 (FP)
4781 points/W
1109 points/W
Test#3 (Generic, ZIP)
1157 points/W
310 points/W
Test#1 (Memory)
282 points/W
263 points/W
TOTAL
11075 points/W
2988 points/W

Performance/GHz
i7-8550U
i5-5675R
Test#1 (Integers)
6343 points/GHz
6087 points/GHz
Test#2 (FP)
5650 points/GHz
5164 points/GHz
Test#3 (Generic, ZIP)
1282 points/GHz
1445 points/GHz
Test#1 (Memory)
2774 points/GHz
1590 points/GHz
TOTAL
16049 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