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A9 9420 vs A6 7400K


Description
The 9420 is based on Excavator architecture while the 7400K is based on Steamroller.

Using the multithread performance as a reference, the 9420 gets a score of 26.2 k points while the 7400K gets 34.3 k points.

Summarizing, the 7400K is 1.3 times faster than the 9420. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
670f00
630f01
Core
Stoney Ridge
Kaveri
Architecture
Base frecuency
3 GHz
3.5 GHz
Boost frecuency
3.6 GHz
3.9 GHz
Socket
Micro-BGA
Socket FM2+
Cores/Threads
2/2
2/2
TDP
15 W
65 W
Cache L1 (d+i)
96+2x32 kB
2x16+64 kB
Cache L2
1024 kB
1024 kB
Date
April 2017
July 2014
Mean monothread perf.
33.09k points
24.01k points
Mean multithread perf.
46.33k points
34.28k points

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
9420
7400K
Test#1 (Integers)
7.55k
8.78k (x1.16)
Test#2 (FP)
13.9k
9.45k (x0.68)
Test#3 (Generic, ZIP)
3.11k
3.39k (x1.09)
Test#1 (Memory)
2.18k
2.39k (x1.1)
TOTAL
26.74k
24.01k (x0.9)

Multithread

9420

7400K
Test#1 (Integers)
9.09k
13.5k (x1.49)
Test#2 (FP)
12.25k
12.17k (x0.99)
Test#3 (Generic, ZIP)
3k
5.96k (x1.99)
Test#1 (Memory)
1.81k
2.65k (x1.47)
TOTAL
26.15k
34.28k (x1.31)

Performance/W
9420
7400K
Test#1 (Integers)
606 points/W
208 points/W
Test#2 (FP)
817 points/W
187 points/W
Test#3 (Generic, ZIP)
200 points/W
92 points/W
Test#1 (Memory)
120 points/W
41 points/W
TOTAL
1743 points/W
527 points/W

Performance/GHz
9420
7400K
Test#1 (Integers)
2096 points/GHz
2252 points/GHz
Test#2 (FP)
3862 points/GHz
2423 points/GHz
Test#3 (Generic, ZIP)
864 points/GHz
869 points/GHz
Test#1 (Memory)
604 points/GHz
612 points/GHz
TOTAL
7427 points/GHz
6156 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