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Ryzen 7 7800X3D vs Core i5-8400


Description
The 7800X3D is based on Zen 4 architecture while the i5-8400 is based on Coffee Lake.

Using the multithread performance as a reference, the 7800X3D gets a score of 704.9 k points while the i5-8400 gets 289.6 k points.

Summarizing, the 7800X3D is 2.4 times faster than the i5-8400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a60f12
906ea
Core
Raphael
Coffee Lake-S
Architecture
Zen 4
Base frecuency
4.2 GHz
2.8 GHz
Boost frecuency
5 GHz
4 GHz
Socket
AM5
LGA 1151
Cores/Threads
8/16
6/6
TDP
120 W
65 W
Cache L1 (d+i)
8x32+8x32 kB
6x32+6x32 kB
Cache L2
8x1024 kB
6x256 kB
Cache L3
98304 kB
9216 kB
Date
April 2023
September 2017
Mean monothread perf.
104.26k points
64.98k points
Mean multithread perf.
704.89k points
289.61k 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
7800X3D
i5-8400
Test#1 (Integers)
36.77k
26.5k (x0.72)
Test#2 (FP)
23.4k
23.11k (x0.99)
Test#3 (Generic, ZIP)
14.8k
5.2k (x0.35)
Test#1 (Memory)
29.28k
10.16k (x0.35)
TOTAL
104.26k
64.98k (x0.62)

Multithread

7800X3D

i5-8400
Test#1 (Integers)
249.4k
135.08k (x0.54)
Test#2 (FP)
167.65k
121.49k (x0.72)
Test#3 (Generic, ZIP)
104.85k
27.53k (x0.26)
Test#1 (Memory)
182.98k
5.5k (x0.03)
TOTAL
704.89k
289.61k (x0.41)

Performance/W
7800X3D
i5-8400
Test#1 (Integers)
2078 points/W
2078 points/W
Test#2 (FP)
1397 points/W
1869 points/W
Test#3 (Generic, ZIP)
874 points/W
424 points/W
Test#1 (Memory)
1525 points/W
85 points/W
TOTAL
5874 points/W
4455 points/W

Performance/GHz
7800X3D
i5-8400
Test#1 (Integers)
7354 points/GHz
6626 points/GHz
Test#2 (FP)
4680 points/GHz
5778 points/GHz
Test#3 (Generic, ZIP)
2961 points/GHz
1300 points/GHz
Test#1 (Memory)
5857 points/GHz
2541 points/GHz
TOTAL
20852 points/GHz
16245 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