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Core i3-8145U vs A9 9420


Description
The i3-8145U is based on Whiskey Lake architecture while the 9420 is based on Excavator.

Using the multithread performance as a reference, the i3-8145U gets a score of 75.1 k points while the 9420 gets 46.3 k points.

Summarizing, the i3-8145U is 1.6 times faster than the 9420. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806eb
670f00
Core
Whiskey Lake-U
Stoney Ridge
Architecture
Base frecuency
2.1 GHz
3 GHz
Boost frecuency
3.9 GHz
3.6 GHz
Socket
BGA 1528
Micro-BGA
Cores/Threads
2/4
2/2
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
96+2x32 kB
Cache L2
2x256 kB
1024 kB
Cache L3
4096 kB
0 kB
Date
August 2018
April 2017
Mean monothread perf.
34.48k points
33.09k points
Mean multithread perf.
75.13k points
46.33k points

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
i3-8145U
9420
Test#1 (Integers)
17.78k
11.74k (x0.66)
Test#2 (FP)
12.8k
16.05k (x1.25)
Test#3 (Generic, ZIP)
2.61k
3.26k (x1.25)
Test#1 (Memory)
1.3k
2.05k (x1.58)
TOTAL
34.48k
33.09k (x0.96)

Multithread

i3-8145U

9420
Test#1 (Integers)
28.06k
18.57k (x0.66)
Test#2 (FP)
34.83k
20.11k (x0.58)
Test#3 (Generic, ZIP)
9.69k
5.27k (x0.54)
Test#1 (Memory)
2.55k
2.38k (x0.93)
TOTAL
75.13k
46.33k (x0.62)

Performance/W
i3-8145U
9420
Test#1 (Integers)
1870 points/W
1238 points/W
Test#2 (FP)
2322 points/W
1340 points/W
Test#3 (Generic, ZIP)
646 points/W
352 points/W
Test#1 (Memory)
170 points/W
159 points/W
TOTAL
5008 points/W
3089 points/W

Performance/GHz
i3-8145U
9420
Test#1 (Integers)
4558 points/GHz
3260 points/GHz
Test#2 (FP)
3281 points/GHz
4458 points/GHz
Test#3 (Generic, ZIP)
669 points/GHz
905 points/GHz
Test#1 (Memory)
332 points/GHz
570 points/GHz
TOTAL
8840 points/GHz
9192 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