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Core i9-9900K vs Ryzen 7 3800X


Description
The i9-9900K is based on Coffee Lake architecture while the 3800X is based on Zen 2.

Using the multithread performance as a reference, the i9-9900K gets a score of 545.3 k points while the 3800X gets 497.7 k points.

Summarizing, the i9-9900K is 1.1 times faster than the 3800X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ec
870f10
Core
Coffee Lake-S
Matisse
Architecture
Base frecuency
3.6 GHz
3.9 GHz
Boost frecuency
5 GHz
4.5 GHz
Socket
LGA 1151
AM4
Cores/Threads
8/16
8/16
TDP
95 W
105 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x256 kB
8x512 kB
Cache L3
16384 kB
32768 kB
Date
October 2018
July 2019
Mean monothread perf.
86.24k points
75.81k points
Mean multithread perf.
545.3k points
497.74k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i9-9900K
3800X
Test#1 (Integers)
5.17k
4.47k (x0.87)
Test#2 (FP)
21.15k
17.41k (x0.82)
Test#3 (Generic, ZIP)
7.01k
8.23k (x1.17)
Test#1 (Memory)
15.32k
25.15k (x1.64)
TOTAL
48.66k
55.26k (x1.14)

Multithread

i9-9900K

3800X
Test#1 (Integers)
38.45k
36.1k (x0.94)
Test#2 (FP)
155.68k
178.65k (x1.15)
Test#3 (Generic, ZIP)
51k
95.98k (x1.88)
Test#1 (Memory)
18.26k
16.03k (x0.88)
TOTAL
263.38k
326.76k (x1.24)

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
3800X
Test#1 (Integers)
33.62k
17.1k (x0.51)
Test#2 (FP)
30.02k
26.59k (x0.89)
Test#3 (Generic, ZIP)
7.17k
8.91k (x1.24)
Test#1 (Memory)
15.43k
23.21k (x1.5)
TOTAL
86.24k
75.81k (x0.88)

Multithread

i9-9900K

3800X
Test#1 (Integers)
248.93k
172.04k (x0.69)
Test#2 (FP)
224.43k
214.03k (x0.95)
Test#3 (Generic, ZIP)
53.39k
97.1k (x1.82)
Test#1 (Memory)
18.54k
14.57k (x0.79)
TOTAL
545.3k
497.74k (x0.91)

Performance/W
i9-9900K
3800X
Test#1 (Integers)
2620 points/W
1638 points/W
Test#2 (FP)
2362 points/W
2038 points/W
Test#3 (Generic, ZIP)
562 points/W
925 points/W
Test#1 (Memory)
195 points/W
139 points/W
TOTAL
5740 points/W
4740 points/W

Performance/GHz
i9-9900K
3800X
Test#1 (Integers)
6724 points/GHz
3799 points/GHz
Test#2 (FP)
6003 points/GHz
5909 points/GHz
Test#3 (Generic, ZIP)
1434 points/GHz
1981 points/GHz
Test#1 (Memory)
3087 points/GHz
5158 points/GHz
TOTAL
17247 points/GHz
16847 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