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Core i7-8550U vs i5-10400F


Description
The i7-8550U is based on Kaby Lake architecture while the i5-10400F is based on Comet Lake.

Using the multithread performance as a reference, the i7-8550U gets a score of 166.1 k points while the i5-10400F gets 370 k points.

Summarizing, the i5-10400F is 2.2 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
a0653
Core
Kaby Lake-R
Comet Lake-S
Architecture
Base frecuency
1.8 GHz
2.9 GHz
Boost frecuency
4 GHz
4.3 GHz
Socket
BGA1356
LGA 1200
Cores/Threads
4/8
6/12
TDP
15 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
8192 kB
12288 kB
Date
August 2017
April 2020
Mean monothread perf.
64.2k points
68.14k points
Mean multithread perf.
166.12k points
369.97k 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
i5-10400F
Test#1 (Integers)
3.91k
4.3k (x1.1)
Test#2 (FP)
15.98k
16.56k (x1.04)
Test#3 (Generic, ZIP)
5.11k
5.25k (x1.03)
Test#1 (Memory)
11.05k
12.61k (x1.14)
TOTAL
36.05k
38.72k (x1.07)

Multithread

i7-8550U

i5-10400F
Test#1 (Integers)
11.76k
18.1k (x1.54)
Test#2 (FP)
50.15k
79.16k (x1.58)
Test#3 (Generic, ZIP)
16.76k
26.75k (x1.6)
Test#1 (Memory)
4.17k
13.81k (x3.31)
TOTAL
82.84k
137.82k (x1.66)

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
i5-10400F
Test#1 (Integers)
25.37k
26.28k (x1.04)
Test#2 (FP)
22.6k
23.38k (x1.03)
Test#3 (Generic, ZIP)
5.13k
5.52k (x1.08)
Test#1 (Memory)
11.1k
12.96k (x1.17)
TOTAL
64.2k
68.14k (x1.06)

Multithread

i7-8550U

i5-10400F
Test#1 (Integers)
72.82k
163.67k (x2.25)
Test#2 (FP)
71.71k
159.74k (x2.23)
Test#3 (Generic, ZIP)
17.35k
39k (x2.25)
Test#1 (Memory)
4.24k
7.56k (x1.78)
TOTAL
166.12k
369.97k (x2.23)

Performance/W
i7-8550U
i5-10400F
Test#1 (Integers)
4855 points/W
2518 points/W
Test#2 (FP)
4781 points/W
2457 points/W
Test#3 (Generic, ZIP)
1157 points/W
600 points/W
Test#1 (Memory)
282 points/W
116 points/W
TOTAL
11075 points/W
5692 points/W

Performance/GHz
i7-8550U
i5-10400F
Test#1 (Integers)
6343 points/GHz
6112 points/GHz
Test#2 (FP)
5650 points/GHz
5438 points/GHz
Test#3 (Generic, ZIP)
1282 points/GHz
1283 points/GHz
Test#1 (Memory)
2774 points/GHz
3014 points/GHz
TOTAL
16049 points/GHz
15847 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