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Core i5-6400 vs Ryzen 9 5900X


Description
The i5-6400 is based on Skylake architecture while the 5900X is based on Zen 3.

Using the multithread performance as a reference, the i5-6400 gets a score of 174.1 k points while the 5900X gets 814.7 k points.

Summarizing, the 5900X is 4.7 times faster than the i5-6400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
a20f12
Core
Skylake-S
Vermeer
Architecture
Base frecuency
2.7 GHz
3.7 GHz
Boost frecuency
3.3 GHz
4.8 GHz
Socket
LGA 1151
AM4
Cores/Threads
4/4
12/24
TDP
65 W
105 W
Cache L1 (d+i)
4x32+4x32 kB
12x32+12x32 kB
Cache L2
4x256 kB
12x512 kB
Cache L3
6144 kB
2x32768 kB
Date
September 2015
November 2020
Mean monothread perf.
48.05k points
83.5k points
Mean multithread perf.
174.05k points
814.74k 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
i5-6400
5900X
Test#1 (Integers)
21.1k
22.6k (x1.07)
Test#2 (FP)
18.28k
24.85k (x1.36)
Test#3 (Generic, ZIP)
4.22k
11.25k (x2.66)
Test#1 (Memory)
4.45k
24.8k (x5.58)
TOTAL
48.05k
83.5k (x1.74)

Multithread

i5-6400

5900X
Test#1 (Integers)
80.03k
258.21k (x3.23)
Test#2 (FP)
71.1k
342.24k (x4.81)
Test#3 (Generic, ZIP)
16.19k
155.3k (x9.59)
Test#1 (Memory)
6.73k
59k (x8.76)
TOTAL
174.05k
814.74k (x4.68)

Performance/W
i5-6400
5900X
Test#1 (Integers)
1231 points/W
2459 points/W
Test#2 (FP)
1094 points/W
3259 points/W
Test#3 (Generic, ZIP)
249 points/W
1479 points/W
Test#1 (Memory)
104 points/W
562 points/W
TOTAL
2678 points/W
7759 points/W

Performance/GHz
i5-6400
5900X
Test#1 (Integers)
6394 points/GHz
4709 points/GHz
Test#2 (FP)
5539 points/GHz
5177 points/GHz
Test#3 (Generic, ZIP)
1279 points/GHz
2343 points/GHz
Test#1 (Memory)
1348 points/GHz
5167 points/GHz
TOTAL
14560 points/GHz
17396 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