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Core i9-10900K vs Ryzen 9 3900X


Description
The i9-10900K is based on Comet Lake architecture while the 3900X is based on Zen 2.

Using the multithread performance as a reference, the i9-10900K gets a score of 685.6 k points while the 3900X gets 756.3 k points.

Summarizing, the 3900X is 1.1 times faster than the i9-10900K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0655
870f10
Core
Comet Lake-S
Matisse
Architecture
Base frecuency
3.7 GHz
3.8 GHz
Boost frecuency
5.2 GHz
4.6 GHz
Socket
LGA 1200
AM4
Cores/Threads
10/20
12/24
TDP
125 W
105 W
Cache L1 (d+i)
10x32+10x32 kB
12x32+12x32 kB
Cache L2
10x256 kB
12x512 kB
Cache L3
20480 kB
4x16384 kB
Date
April 2020
July 2019
Mean monothread perf.
80.41k points
72.51k points
Mean multithread perf.
685.65k points
756.3k points

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i9-10900K
3900X
Test#1 (Integers)
19.5k
17.35k (x0.89)
Test#2 (FP)
28.01k
25.87k (x0.92)
Test#3 (Generic, ZIP)
7.45k
8.72k (x1.17)
Test#1 (Memory)
15.82k
27.86k (x1.76)
TOTAL
70.79k
79.8k (x1.13)

Multithread

i9-10900K

3900X
Test#1 (Integers)
194.49k
201.57k (x1.04)
Test#2 (FP)
312.59k
284.41k (x0.91)
Test#3 (Generic, ZIP)
89.14k
145.16k (x1.63)
Test#1 (Memory)
12.58k
100.56k (x7.99)
TOTAL
608.81k
731.7k (x1.2)

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
i9-10900K
3900X
Test#1 (Integers)
32.67k
16.73k (x0.51)
Test#2 (FP)
28.49k
24.74k (x0.87)
Test#3 (Generic, ZIP)
6.53k
8.82k (x1.35)
Test#1 (Memory)
12.72k
22.22k (x1.75)
TOTAL
80.41k
72.51k (x0.9)

Multithread

i9-10900K

3900X
Test#1 (Integers)
307.39k
248.24k (x0.81)
Test#2 (FP)
298.47k
309.66k (x1.04)
Test#3 (Generic, ZIP)
72.94k
140.01k (x1.92)
Test#1 (Memory)
6.85k
58.39k (x8.52)
TOTAL
685.65k
756.3k (x1.1)

Performance/W
i9-10900K
3900X
Test#1 (Integers)
2459 points/W
2364 points/W
Test#2 (FP)
2388 points/W
2949 points/W
Test#3 (Generic, ZIP)
583 points/W
1333 points/W
Test#1 (Memory)
55 points/W
556 points/W
TOTAL
5485 points/W
7203 points/W

Performance/GHz
i9-10900K
3900X
Test#1 (Integers)
6282 points/GHz
3638 points/GHz
Test#2 (FP)
5479 points/GHz
5377 points/GHz
Test#3 (Generic, ZIP)
1257 points/GHz
1917 points/GHz
Test#1 (Memory)
2445 points/GHz
4831 points/GHz
TOTAL
15463 points/GHz
15763 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