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Ryzen 9 3900 vs Core i9-9900K


Description
The 3900 is based on Zen 2 architecture while the i9-9900K is based on Coffee Lake.

Using the multithread performance as a reference, the 3900 gets a score of 687.5 k points while the i9-9900K gets 545.3 k points.

Summarizing, the 3900 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
870f10
906ec
Core
Matisse
Coffee Lake-S
Architecture
Base frecuency
3.1 GHz
3.6 GHz
Boost frecuency
4.3 GHz
5 GHz
Socket
AM4
LGA 1151
Cores/Threads
12/24
8/16
TDP
65 W
95 W
Cache L1 (d+i)
12x32+12x32 kB
8x32+8x32 kB
Cache L2
12x512 kB
8x256 kB
Cache L3
4x16384 kB
16384 kB
Date
September 2019
October 2018
Mean monothread perf.
74.97k points
86.24k points
Mean multithread perf.
687.5k points
545.3k 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
3900
i9-9900K
Test#1 (Integers)
4.39k
5.17k (x1.18)
Test#2 (FP)
16.99k
21.15k (x1.24)
Test#3 (Generic, ZIP)
7.74k
7.01k (x0.91)
Test#1 (Memory)
24.57k
15.32k (x0.62)
TOTAL
53.69k
48.66k (x0.91)

Multithread

3900

i9-9900K
Test#1 (Integers)
48.45k
38.45k (x0.79)
Test#2 (FP)
230.81k
155.68k (x0.67)
Test#3 (Generic, ZIP)
122.82k
51k (x0.42)
Test#1 (Memory)
54.73k
18.26k (x0.33)
TOTAL
456.8k
263.38k (x0.58)

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
3900
i9-9900K
Test#1 (Integers)
16.85k
33.62k (x1.99)
Test#2 (FP)
26.03k
30.02k (x1.15)
Test#3 (Generic, ZIP)
9.54k
7.17k (x0.75)
Test#1 (Memory)
22.55k
15.43k (x0.68)
TOTAL
74.97k
86.24k (x1.15)

Multithread

3900

i9-9900K
Test#1 (Integers)
229.41k
248.93k (x1.09)
Test#2 (FP)
292.81k
224.43k (x0.77)
Test#3 (Generic, ZIP)
128.48k
53.39k (x0.42)
Test#1 (Memory)
36.8k
18.54k (x0.5)
TOTAL
687.5k
545.3k (x0.79)

Performance/W
3900
i9-9900K
Test#1 (Integers)
3529 points/W
2620 points/W
Test#2 (FP)
4505 points/W
2362 points/W
Test#3 (Generic, ZIP)
1977 points/W
562 points/W
Test#1 (Memory)
566 points/W
195 points/W
TOTAL
10577 points/W
5740 points/W

Performance/GHz
3900
i9-9900K
Test#1 (Integers)
3920 points/GHz
6724 points/GHz
Test#2 (FP)
6054 points/GHz
6003 points/GHz
Test#3 (Generic, ZIP)
2218 points/GHz
1434 points/GHz
Test#1 (Memory)
5243 points/GHz
3087 points/GHz
TOTAL
17435 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