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Ryzen 9 3900 vs Core i7-11700K


Description
The 3900 is based on Zen 2 architecture while the i7-11700K is based on Rocket Lake.

Using the multithread performance as a reference, the 3900 gets a score of 687.5 k points while the i7-11700K gets 742.2 k points.

Summarizing, the i7-11700K is 1.1 times faster than the 3900. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
870f10
a0671
Core
Matisse
Rocket Lake-S
Architecture
Base frecuency
3.1 GHz
3.6 GHz
Boost frecuency
4.3 GHz
5 GHz
Socket
AM4
LGA 1200
Cores/Threads
12/24
8/16
TDP
65 W
125 W
Cache L1 (d+i)
12x32+12x32 kB
8x32+8x48 kB
Cache L2
12x512 kB
8x512 kB
Cache L3
4x16384 kB
16384 kB
Date
September 2019
March 2021
Mean monothread perf.
74.97k points
99.57k points
Mean multithread perf.
687.5k points
742.15k 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
3900
i7-11700K
Test#1 (Integers)
16.85k
36.24k (x2.15)
Test#2 (FP)
26.03k
28.87k (x1.11)
Test#3 (Generic, ZIP)
9.54k
12.76k (x1.34)
Test#1 (Memory)
22.55k
21.7k (x0.96)
TOTAL
74.97k
99.57k (x1.33)

Multithread

3900

i7-11700K
Test#1 (Integers)
229.41k
315.15k (x1.37)
Test#2 (FP)
292.81k
303.07k (x1.04)
Test#3 (Generic, ZIP)
128.48k
111.09k (x0.86)
Test#1 (Memory)
36.8k
12.85k (x0.35)
TOTAL
687.5k
742.15k (x1.08)

Performance/W
3900
i7-11700K
Test#1 (Integers)
3529 points/W
2521 points/W
Test#2 (FP)
4505 points/W
2425 points/W
Test#3 (Generic, ZIP)
1977 points/W
889 points/W
Test#1 (Memory)
566 points/W
103 points/W
TOTAL
10577 points/W
5937 points/W

Performance/GHz
3900
i7-11700K
Test#1 (Integers)
3920 points/GHz
7247 points/GHz
Test#2 (FP)
6054 points/GHz
5775 points/GHz
Test#3 (Generic, ZIP)
2218 points/GHz
2551 points/GHz
Test#1 (Memory)
5243 points/GHz
4341 points/GHz
TOTAL
17435 points/GHz
19914 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