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Core i5-8400 vs i5-5675R


Description
The i5-8400 is based on Coffee Lake architecture while the i5-5675R is based on Broadwell.

Using the multithread performance as a reference, the i5-8400 gets a score of 289.6 k points while the i5-5675R gets 194.2 k points.

Summarizing, the i5-8400 is 1.5 times faster than the i5-5675R. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
40671
Core
Coffee Lake-S
Bradwell-H
Architecture
Base frecuency
2.8 GHz
3.1 GHz
Boost frecuency
4 GHz
3.6 GHz
Socket
LGA 1151
BGA1364
Cores/Threads
6/6
4/4
TDP
65 W
65 W
Cache L1 (d+i)
6x32+6x32 kB
4x32+4x32 kB
Cache L2
6x256 kB
4x256 kB
Cache L3
9216 kB
4096 kB
Date
September 2017
June 2015
Mean monothread perf.
64.98k points
51.43k points
Mean multithread perf.
289.61k points
194.2k 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
i5-5675R
Test#1 (Integers)
4.08k
4.14k (x1.01)
Test#2 (FP)
14.96k
14.35k (x0.96)
Test#3 (Generic, ZIP)
4.98k
4.94k (x0.99)
Test#1 (Memory)
10.29k
5.47k (x0.53)
TOTAL
34.31k
28.91k (x0.84)

Multithread

i5-8400

i5-5675R
Test#1 (Integers)
21.54k
16.02k (x0.74)
Test#2 (FP)
85.13k
54.6k (x0.64)
Test#3 (Generic, ZIP)
28.24k
18.69k (x0.66)
Test#1 (Memory)
4.08k
16.87k (x4.13)
TOTAL
139k
106.18k (x0.76)

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
i5-5675R
Test#1 (Integers)
26.5k
21.91k (x0.83)
Test#2 (FP)
23.11k
18.59k (x0.8)
Test#3 (Generic, ZIP)
5.2k
5.2k (x1)
Test#1 (Memory)
10.16k
5.72k (x0.56)
TOTAL
64.98k
51.43k (x0.79)

Multithread

i5-8400

i5-5675R
Test#1 (Integers)
135.08k
84.92k (x0.63)
Test#2 (FP)
121.49k
72.09k (x0.59)
Test#3 (Generic, ZIP)
27.53k
20.13k (x0.73)
Test#1 (Memory)
5.5k
17.07k (x3.1)
TOTAL
289.61k
194.2k (x0.67)

Performance/W
i5-8400
i5-5675R
Test#1 (Integers)
2078 points/W
1306 points/W
Test#2 (FP)
1869 points/W
1109 points/W
Test#3 (Generic, ZIP)
424 points/W
310 points/W
Test#1 (Memory)
85 points/W
263 points/W
TOTAL
4455 points/W
2988 points/W

Performance/GHz
i5-8400
i5-5675R
Test#1 (Integers)
6626 points/GHz
6087 points/GHz
Test#2 (FP)
5778 points/GHz
5164 points/GHz
Test#3 (Generic, ZIP)
1300 points/GHz
1445 points/GHz
Test#1 (Memory)
2541 points/GHz
1590 points/GHz
TOTAL
16245 points/GHz
14286 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