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Core i9-9900K vs Ryzen 9 5900X


Description
The i9-9900K is based on Coffee Lake architecture while the 5900X is based on Zen 3.

Using the multithread performance as a reference, the i9-9900K gets a score of 545.3 k points while the 5900X gets 840.1 k points.

Summarizing, the 5900X is 1.5 times faster than the i9-9900K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ec
a20f10
Core
Coffee Lake-S
Vermeer
Architecture
Base frecuency
3.6 GHz
3.7 GHz
Boost frecuency
5 GHz
4.8 GHz
Socket
LGA 1151
AM4
Cores/Threads
8/16
12/24
TDP
95 W
105 W
Cache L1 (d+i)
8x32+8x32 kB
12x32+12x32 kB
Cache L2
8x256 kB
12x512 kB
Cache L3
16384 kB
2x32768 kB
Date
October 2018
November 2020
Mean monothread perf.
86.24k points
89.82k points
Mean multithread perf.
545.3k points
840.11k 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
i9-9900K
5900X
Test#1 (Integers)
33.62k
24.34k (x0.72)
Test#2 (FP)
30.02k
26.8k (x0.89)
Test#3 (Generic, ZIP)
7.17k
12.12k (x1.69)
Test#1 (Memory)
15.43k
26.55k (x1.72)
TOTAL
86.24k
89.82k (x1.04)

Multithread

i9-9900K

5900X
Test#1 (Integers)
248.93k
263.12k (x1.06)
Test#2 (FP)
224.43k
353.9k (x1.58)
Test#3 (Generic, ZIP)
53.39k
159.07k (x2.98)
Test#1 (Memory)
18.54k
64.01k (x3.45)
TOTAL
545.3k
840.11k (x1.54)

Performance/W
i9-9900K
5900X
Test#1 (Integers)
2620 points/W
2506 points/W
Test#2 (FP)
2362 points/W
3371 points/W
Test#3 (Generic, ZIP)
562 points/W
1515 points/W
Test#1 (Memory)
195 points/W
610 points/W
TOTAL
5740 points/W
8001 points/W

Performance/GHz
i9-9900K
5900X
Test#1 (Integers)
6724 points/GHz
5071 points/GHz
Test#2 (FP)
6003 points/GHz
5584 points/GHz
Test#3 (Generic, ZIP)
1434 points/GHz
2526 points/GHz
Test#1 (Memory)
3087 points/GHz
5530 points/GHz
TOTAL
17247 points/GHz
18712 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