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Ryzen 9 7940HS vs Core i9-9900K


Description
The 7940HS is based on Zen 4 architecture while the i9-9900K is based on Coffee Lake.

Using the multithread performance as a reference, the 7940HS gets a score of 718.6 k points while the i9-9900K gets 545.3 k points.

Summarizing, the 7940HS is 1.3 times faster than the i9-9900K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a70f41
906ec
Core
Phoenix
Coffee Lake-S
Architecture
Zen 4
Base frecuency
4 GHz
3.6 GHz
Boost frecuency
5.2 GHz
5 GHz
Socket
BGA-FP7r2
LGA 1151
Cores/Threads
8/16
8/16
TDP
35 W
95 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x1024 kB
8x256 kB
Cache L3
16384 kB
16384 kB
Date
March 2023
October 2018
Mean monothread perf.
113.57k points
86.24k points
Mean multithread perf.
718.59k points
545.3k 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
7940HS
i9-9900K
Test#1 (Integers)
38.25k
33.62k (x0.88)
Test#2 (FP)
29.92k
30.02k (x1)
Test#3 (Generic, ZIP)
15.5k
7.17k (x0.46)
Test#1 (Memory)
29.89k
15.43k (x0.52)
TOTAL
113.57k
86.24k (x0.76)

Multithread

7940HS

i9-9900K
Test#1 (Integers)
309.6k
248.93k (x0.8)
Test#2 (FP)
260.4k
224.43k (x0.86)
Test#3 (Generic, ZIP)
128.56k
53.39k (x0.42)
Test#1 (Memory)
20.04k
18.54k (x0.93)
TOTAL
718.59k
545.3k (x0.76)

Performance/W
7940HS
i9-9900K
Test#1 (Integers)
8846 points/W
2620 points/W
Test#2 (FP)
7440 points/W
2362 points/W
Test#3 (Generic, ZIP)
3673 points/W
562 points/W
Test#1 (Memory)
573 points/W
195 points/W
TOTAL
20531 points/W
5740 points/W

Performance/GHz
7940HS
i9-9900K
Test#1 (Integers)
7355 points/GHz
6724 points/GHz
Test#2 (FP)
5755 points/GHz
6003 points/GHz
Test#3 (Generic, ZIP)
2981 points/GHz
1434 points/GHz
Test#1 (Memory)
5748 points/GHz
3087 points/GHz
TOTAL
21839 points/GHz
17247 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