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Ryzen 9 3900X vs Core i7-9700K


Description
The 3900X is based on Zen 2 architecture while the i7-9700K is based on Coffee Lake.

Using the multithread performance as a reference, the 3900X gets a score of 756.3 k points while the i7-9700K gets 460 k points.

Summarizing, the 3900X is 1.6 times faster than the i7-9700K. 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
3.8 GHz
3.6 GHz
Boost frecuency
4.6 GHz
4.9 GHz
Socket
AM4
LGA 1151
Cores/Threads
12/24
8/8
TDP
105 W
95 W
Cache L1 (d+i)
12x32+12x32 kB
8x32+8x32 kB
Cache L2
12x512 kB
8x256 kB
Cache L3
4x16384 kB
12288 kB
Date
July 2019
October 2018
Mean monothread perf.
72.51k points
73.62k points
Mean multithread perf.
756.3k points
460.02k 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
3900X
i7-9700K
Test#1 (Integers)
16.73k
29.3k (x1.75)
Test#2 (FP)
24.74k
25.61k (x1.04)
Test#3 (Generic, ZIP)
8.82k
5.86k (x0.66)
Test#1 (Memory)
22.22k
12.86k (x0.58)
TOTAL
72.51k
73.62k (x1.02)

Multithread

3900X

i7-9700K
Test#1 (Integers)
248.24k
217.77k (x0.88)
Test#2 (FP)
309.66k
190.46k (x0.62)
Test#3 (Generic, ZIP)
140.01k
40.48k (x0.29)
Test#1 (Memory)
58.39k
11.31k (x0.19)
TOTAL
756.3k
460.02k (x0.61)

Performance/W
3900X
i7-9700K
Test#1 (Integers)
2364 points/W
2292 points/W
Test#2 (FP)
2949 points/W
2005 points/W
Test#3 (Generic, ZIP)
1333 points/W
426 points/W
Test#1 (Memory)
556 points/W
119 points/W
TOTAL
7203 points/W
4842 points/W

Performance/GHz
3900X
i7-9700K
Test#1 (Integers)
3638 points/GHz
5981 points/GHz
Test#2 (FP)
5377 points/GHz
5226 points/GHz
Test#3 (Generic, ZIP)
1917 points/GHz
1195 points/GHz
Test#1 (Memory)
4831 points/GHz
2624 points/GHz
TOTAL
15763 points/GHz
15025 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