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Ryzen 7 2700X vs Core i5-8400


Description
The 2700X is based on Zen+ architecture while the i5-8400 is based on Coffee Lake.

Using the multithread performance as a reference, the 2700X gets a score of 433.2 k points while the i5-8400 gets 289.6 k points.

Summarizing, the 2700X is 1.5 times faster than the i5-8400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
800f82
906ea
Core
Pinnacle Ridge
Coffee Lake-S
Architecture
Base frecuency
3.7 GHz
2.8 GHz
Boost frecuency
4.3 GHz
4 GHz
Socket
AM4
LGA 1151
Cores/Threads
8/16
6/6
TDP
105 W
65 W
Cache L1 (d+i)
8x64+8x32 kB
6x32+6x32 kB
Cache L2
8x512 kB
6x256 kB
Cache L3
16384 kB
9216 kB
Date
April 2018
September 2017
Mean monothread perf.
65.87k points
64.98k points
Mean multithread perf.
433.19k points
289.61k 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
2700X
i5-8400
Test#1 (Integers)
4.25k
4.08k (x0.96)
Test#2 (FP)
19.72k
14.96k (x0.76)
Test#3 (Generic, ZIP)
5.84k
4.98k (x0.85)
Test#1 (Memory)
21.36k
10.29k (x0.48)
TOTAL
51.17k
34.31k (x0.67)

Multithread

2700X

i5-8400
Test#1 (Integers)
35.04k
21.54k (x0.61)
Test#2 (FP)
181.42k
85.13k (x0.47)
Test#3 (Generic, ZIP)
64.86k
28.24k (x0.44)
Test#1 (Memory)
8.21k
4.08k (x0.5)
TOTAL
289.54k
139k (x0.48)

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
2700X
i5-8400
Test#1 (Integers)
15.61k
26.5k (x1.7)
Test#2 (FP)
26.08k
23.11k (x0.89)
Test#3 (Generic, ZIP)
5.84k
5.2k (x0.89)
Test#1 (Memory)
18.34k
10.16k (x0.55)
TOTAL
65.87k
64.98k (x0.99)

Multithread

2700X

i5-8400
Test#1 (Integers)
123.33k
135.08k (x1.1)
Test#2 (FP)
240.46k
121.49k (x0.51)
Test#3 (Generic, ZIP)
61.23k
27.53k (x0.45)
Test#1 (Memory)
8.17k
5.5k (x0.67)
TOTAL
433.19k
289.61k (x0.67)

Performance/W
2700X
i5-8400
Test#1 (Integers)
1175 points/W
2078 points/W
Test#2 (FP)
2290 points/W
1869 points/W
Test#3 (Generic, ZIP)
583 points/W
424 points/W
Test#1 (Memory)
78 points/W
85 points/W
TOTAL
4126 points/W
4455 points/W

Performance/GHz
2700X
i5-8400
Test#1 (Integers)
3631 points/GHz
6626 points/GHz
Test#2 (FP)
6065 points/GHz
5778 points/GHz
Test#3 (Generic, ZIP)
1357 points/GHz
1300 points/GHz
Test#1 (Memory)
4266 points/GHz
2541 points/GHz
TOTAL
15319 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