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Ryzen 7 3800XT vs Core i5-6400


Description
The 3800XT is based on Zen 2 architecture while the i5-6400 is based on Skylake.

Using the multithread performance as a reference, the 3800XT gets a score of 508.9 k points while the i5-6400 gets 174.1 k points.

Summarizing, the 3800XT is 2.9 times faster than the i5-6400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
870f10
506e3
Core
Matisse
Skylake-S
Architecture
Base frecuency
3.9 GHz
2.7 GHz
Boost frecuency
4.7 GHz
3.3 GHz
Socket
AM4
LGA 1151
Cores/Threads
8/16
4/4
TDP
105 W
65 W
Cache L1 (d+i)
8x32+8x32 kB
4x32+4x32 kB
Cache L2
8x512 kB
4x256 kB
Cache L3
2x16384 kB
6144 kB
Date
July 2020
September 2015
Mean monothread perf.
78.2k points
48.05k points
Mean multithread perf.
508.89k points
174.05k 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
i5-6400
Test#1 (Integers)
17.57k
21.1k (x1.2)
Test#2 (FP)
27.38k
18.28k (x0.67)
Test#3 (Generic, ZIP)
9.35k
4.22k (x0.45)
Test#1 (Memory)
23.9k
4.45k (x0.19)
TOTAL
78.2k
48.05k (x0.61)

Multithread

3800XT

i5-6400
Test#1 (Integers)
176.08k
80.03k (x0.45)
Test#2 (FP)
219.88k
71.1k (x0.32)
Test#3 (Generic, ZIP)
100k
16.19k (x0.16)
Test#1 (Memory)
12.93k
6.73k (x0.52)
TOTAL
508.89k
174.05k (x0.34)

Performance/W
3800XT
i5-6400
Test#1 (Integers)
1677 points/W
1231 points/W
Test#2 (FP)
2094 points/W
1094 points/W
Test#3 (Generic, ZIP)
952 points/W
249 points/W
Test#1 (Memory)
123 points/W
104 points/W
TOTAL
4847 points/W
2678 points/W

Performance/GHz
3800XT
i5-6400
Test#1 (Integers)
3738 points/GHz
6394 points/GHz
Test#2 (FP)
5827 points/GHz
5539 points/GHz
Test#3 (Generic, ZIP)
1989 points/GHz
1279 points/GHz
Test#1 (Memory)
5085 points/GHz
1348 points/GHz
TOTAL
16638 points/GHz
14560 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