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A9 9420 vs Core i7-8665U


Description
The 9420 is based on Excavator architecture while the i7-8665U is based on Whiskey Lake.

Using the multithread performance as a reference, the 9420 gets a score of 46.3 k points while the i7-8665U gets 109.7 k points.

Summarizing, the i7-8665U is 2.4 times faster than the 9420. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
670f00
806ec
Core
Stoney Ridge
Whiskey Lake-U
Architecture
Base frecuency
3 GHz
1.9 GHz
Boost frecuency
3.6 GHz
4.8 GHz
Socket
Micro-BGA
BGA 1528
Cores/Threads
2/2
4/8
TDP
15 W
15 W
Cache L1 (d+i)
96+2x32 kB
4x32+4x32 kB
Cache L2
1024 kB
4x256 kB
Cache L3
0 kB
8192 kB
Date
April 2017
April 2019
Mean monothread perf.
33.09k points
35.19k points
Mean multithread perf.
46.33k points
109.72k 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
9420
i7-8665U
Test#1 (Integers)
11.74k
14.38k (x1.23)
Test#2 (FP)
16.05k
13.43k (x0.84)
Test#3 (Generic, ZIP)
3.26k
2.87k (x0.88)
Test#1 (Memory)
2.05k
4.49k (x2.19)
TOTAL
33.09k
35.19k (x1.06)

Multithread

9420

i7-8665U
Test#1 (Integers)
18.57k
47.22k (x2.54)
Test#2 (FP)
20.11k
46.99k (x2.34)
Test#3 (Generic, ZIP)
5.27k
10.08k (x1.91)
Test#1 (Memory)
2.38k
5.42k (x2.28)
TOTAL
46.33k
109.72k (x2.37)

Performance/W
9420
i7-8665U
Test#1 (Integers)
1238 points/W
3148 points/W
Test#2 (FP)
1340 points/W
3133 points/W
Test#3 (Generic, ZIP)
352 points/W
672 points/W
Test#1 (Memory)
159 points/W
361 points/W
TOTAL
3089 points/W
7314 points/W

Performance/GHz
9420
i7-8665U
Test#1 (Integers)
3260 points/GHz
2996 points/GHz
Test#2 (FP)
4458 points/GHz
2799 points/GHz
Test#3 (Generic, ZIP)
905 points/GHz
599 points/GHz
Test#1 (Memory)
570 points/GHz
936 points/GHz
TOTAL
9192 points/GHz
7330 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