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Core i9-9900KF vs Ryzen 9 7940HS


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

Using the multithread performance as a reference, the i9-9900KF gets a score of 592.9 k points while the 7940HS gets 718.6 k points.

Summarizing, the 7940HS is 1.2 times faster than the i9-9900KF. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ed
a70f41
Core
Coffee Lake-S
Phoenix
Architecture
Coffee Lake
Base frecuency
3.6 GHz
4 GHz
Boost frecuency
5 GHz
5.2 GHz
Socket
LGA 1151
BGA-FP7r2
Cores/Threads
8/16
8/16
TDP
95 W
35 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x256 kB
8x1024 kB
Cache L3
16386 kB
16384 kB
Date
January 2019
March 2023
Mean monothread perf.
84.54k points
113.57k points
Mean multithread perf.
592.86k points
718.59k 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
i9-9900KF
7940HS
Test#1 (Integers)
33.03k
38.25k (x1.16)
Test#2 (FP)
29.52k
29.92k (x1.01)
Test#3 (Generic, ZIP)
6.55k
15.5k (x2.37)
Test#1 (Memory)
15.45k
29.89k (x1.93)
TOTAL
84.54k
113.57k (x1.34)

Multithread

i9-9900KF

7940HS
Test#1 (Integers)
276.22k
309.6k (x1.12)
Test#2 (FP)
250.61k
260.4k (x1.04)
Test#3 (Generic, ZIP)
57.2k
128.56k (x2.25)
Test#1 (Memory)
8.84k
20.04k (x2.27)
TOTAL
592.86k
718.59k (x1.21)

Performance/W
i9-9900KF
7940HS
Test#1 (Integers)
2908 points/W
8846 points/W
Test#2 (FP)
2638 points/W
7440 points/W
Test#3 (Generic, ZIP)
602 points/W
3673 points/W
Test#1 (Memory)
93 points/W
573 points/W
TOTAL
6241 points/W
20531 points/W

Performance/GHz
i9-9900KF
7940HS
Test#1 (Integers)
6605 points/GHz
7355 points/GHz
Test#2 (FP)
5904 points/GHz
5755 points/GHz
Test#3 (Generic, ZIP)
1309 points/GHz
2981 points/GHz
Test#1 (Memory)
3090 points/GHz
5748 points/GHz
TOTAL
16909 points/GHz
21839 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