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Ryzen 7 3800XT vs Core i9-11900K


Description
The 3800XT is based on Zen 2 architecture while the i9-11900K is based on Rocket Lake.

Using the multithread performance as a reference, the 3800XT gets a score of 508.9 k points while the i9-11900K gets 748 k points.

Summarizing, the i9-11900K is 1.5 times faster than the 3800XT. 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
3.9 GHz
3.5 GHz
Boost frecuency
4.7 GHz
5.3 GHz
Socket
AM4
LGA 1200
Cores/Threads
8/16
8/16
TDP
105 W
125 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x48 kB
Cache L2
8x512 kB
8x512 kB
Cache L3
2x16384 kB
16386 kB
Date
July 2020
March 2021
Mean monothread perf.
78.2k points
101.11k points
Mean multithread perf.
508.89k points
748.02k 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
3800XT
i9-11900K
Test#1 (Integers)
17.57k
36.08k (x2.05)
Test#2 (FP)
27.38k
30.19k (x1.1)
Test#3 (Generic, ZIP)
9.35k
12.96k (x1.39)
Test#1 (Memory)
23.9k
21.88k (x0.92)
TOTAL
78.2k
101.11k (x1.29)

Multithread

3800XT

i9-11900K
Test#1 (Integers)
176.08k
311.76k (x1.77)
Test#2 (FP)
219.88k
314.01k (x1.43)
Test#3 (Generic, ZIP)
100k
112.23k (x1.12)
Test#1 (Memory)
12.93k
10.02k (x0.78)
TOTAL
508.89k
748.02k (x1.47)

Performance/W
3800XT
i9-11900K
Test#1 (Integers)
1677 points/W
2494 points/W
Test#2 (FP)
2094 points/W
2512 points/W
Test#3 (Generic, ZIP)
952 points/W
898 points/W
Test#1 (Memory)
123 points/W
80 points/W
TOTAL
4847 points/W
5984 points/W

Performance/GHz
3800XT
i9-11900K
Test#1 (Integers)
3738 points/GHz
6807 points/GHz
Test#2 (FP)
5827 points/GHz
5695 points/GHz
Test#3 (Generic, ZIP)
1989 points/GHz
2446 points/GHz
Test#1 (Memory)
5085 points/GHz
4129 points/GHz
TOTAL
16638 points/GHz
19077 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