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Core i5-8400 vs Ryzen 7 1800X


Description
The i5-8400 is based on Coffee Lake architecture while the 1800X is based on Zen.

Using the multithread performance as a reference, the i5-8400 gets a score of 289.6 k points while the 1800X gets 410.5 k points.

Summarizing, the 1800X is 1.4 times faster than the i5-8400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
800f11
Core
Coffee Lake-S
Summit Ridge
Architecture
Base frecuency
2.8 GHz
3.6 GHz
Boost frecuency
4 GHz
4 GHz
Socket
LGA 1151
AM4
Cores/Threads
6/6
8/16
TDP
65 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
8x64+8x32 kB
Cache L2
6x256 kB
8x512 kB
Cache L3
9216 kB
2x8192 kB
Date
September 2017
March 2017
Mean monothread perf.
64.98k points
61.07k points
Mean multithread perf.
289.61k points
410.47k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i5-8400
1800X
Test#1 (Integers)
4.08k
4.14k (x1.02)
Test#2 (FP)
14.96k
19.07k (x1.27)
Test#3 (Generic, ZIP)
4.98k
5.77k (x1.16)
Test#1 (Memory)
10.29k
18.28k (x1.78)
TOTAL
34.31k
47.26k (x1.38)

Multithread

i5-8400

1800X
Test#1 (Integers)
21.54k
34.48k (x1.6)
Test#2 (FP)
85.13k
169.65k (x1.99)
Test#3 (Generic, ZIP)
28.24k
63.68k (x2.25)
Test#1 (Memory)
4.08k
8.2k (x2.01)
TOTAL
139k
276.01k (x1.99)

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
i5-8400
1800X
Test#1 (Integers)
26.5k
15.02k (x0.57)
Test#2 (FP)
23.11k
24.26k (x1.05)
Test#3 (Generic, ZIP)
5.2k
5.53k (x1.06)
Test#1 (Memory)
10.16k
16.26k (x1.6)
TOTAL
64.98k
61.07k (x0.94)

Multithread

i5-8400

1800X
Test#1 (Integers)
135.08k
122.92k (x0.91)
Test#2 (FP)
121.49k
220.32k (x1.81)
Test#3 (Generic, ZIP)
27.53k
59.78k (x2.17)
Test#1 (Memory)
5.5k
7.44k (x1.35)
TOTAL
289.61k
410.47k (x1.42)

Performance/W
i5-8400
1800X
Test#1 (Integers)
2078 points/W
1294 points/W
Test#2 (FP)
1869 points/W
2319 points/W
Test#3 (Generic, ZIP)
424 points/W
629 points/W
Test#1 (Memory)
85 points/W
78 points/W
TOTAL
4455 points/W
4321 points/W

Performance/GHz
i5-8400
1800X
Test#1 (Integers)
6626 points/GHz
3756 points/GHz
Test#2 (FP)
5778 points/GHz
6065 points/GHz
Test#3 (Generic, ZIP)
1300 points/GHz
1382 points/GHz
Test#1 (Memory)
2541 points/GHz
4065 points/GHz
TOTAL
16245 points/GHz
15267 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