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Core i5-6400 vs i5-5675R


Description
The i5-6400 is based on Skylake architecture while the i5-5675R is based on Broadwell.

Using the multithread performance as a reference, the i5-6400 gets a score of 174.1 k points while the i5-5675R gets 194.2 k points.

Summarizing, the i5-5675R is 1.1 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
40671
Core
Skylake-S
Bradwell-H
Architecture
Base frecuency
2.7 GHz
3.1 GHz
Boost frecuency
3.3 GHz
3.6 GHz
Socket
LGA 1151
BGA1364
Cores/Threads
4/4
4/4
TDP
65 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
4096 kB
Date
September 2015
June 2015
Mean monothread perf.
48.05k points
51.43k points
Mean multithread perf.
174.05k 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
i5-6400
i5-5675R
Test#1 (Integers)
3.2k
4.14k (x1.29)
Test#2 (FP)
12.81k
14.35k (x1.12)
Test#3 (Generic, ZIP)
4.18k
4.94k (x1.18)
Test#1 (Memory)
4.3k
5.47k (x1.27)
TOTAL
24.49k
28.91k (x1.18)

Multithread

i5-6400

i5-5675R
Test#1 (Integers)
11.45k
16.02k (x1.4)
Test#2 (FP)
46.67k
54.6k (x1.17)
Test#3 (Generic, ZIP)
14.69k
18.69k (x1.27)
Test#1 (Memory)
5.92k
16.87k (x2.85)
TOTAL
78.73k
106.18k (x1.35)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i5-6400
i5-5675R
Test#1 (Integers)
11.56k
12.86k (x1.11)
Test#2 (FP)
16.53k
16.85k (x1.02)
Test#3 (Generic, ZIP)
4.3k
5.19k (x1.21)
Test#1 (Memory)
3.97k
5.49k (x1.38)
TOTAL
36.36k
40.39k (x1.11)

Multithread

i5-6400

i5-5675R
Test#1 (Integers)
43.01k
50.07k (x1.16)
Test#2 (FP)
64.46k
64.61k (x1)
Test#3 (Generic, ZIP)
16.14k
19.84k (x1.23)
Test#1 (Memory)
5.91k
17.09k (x2.89)
TOTAL
129.51k
151.6k (x1.17)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i5-6400
i5-5675R
Test#1 (Integers)
11.82k
12.88k (x1.09)
Test#2 (FP)
18.36k
18.27k (x1)
Test#3 (Generic, ZIP)
4.43k
5.12k (x1.16)
Test#1 (Memory)
4.95k
5.45k (x1.1)
TOTAL
39.56k
41.72k (x1.05)

Multithread

i5-6400

i5-5675R
Test#1 (Integers)
46.04k
49.91k (x1.08)
Test#2 (FP)
69.47k
70.3k (x1.01)
Test#3 (Generic, ZIP)
16.33k
19.69k (x1.21)
Test#1 (Memory)
7.74k
16.92k (x2.19)
TOTAL
139.58k
156.83k (x1.12)

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
i5-5675R
Test#1 (Integers)
21.1k
21.91k (x1.04)
Test#2 (FP)
18.28k
18.59k (x1.02)
Test#3 (Generic, ZIP)
4.22k
5.2k (x1.23)
Test#1 (Memory)
4.45k
5.72k (x1.29)
TOTAL
48.05k
51.43k (x1.07)

Multithread

i5-6400

i5-5675R
Test#1 (Integers)
80.03k
84.92k (x1.06)
Test#2 (FP)
71.1k
72.09k (x1.01)
Test#3 (Generic, ZIP)
16.19k
20.13k (x1.24)
Test#1 (Memory)
6.73k
17.07k (x2.53)
TOTAL
174.05k
194.2k (x1.12)

Performance/W
i5-6400
i5-5675R
Test#1 (Integers)
1231 points/W
1306 points/W
Test#2 (FP)
1094 points/W
1109 points/W
Test#3 (Generic, ZIP)
249 points/W
310 points/W
Test#1 (Memory)
104 points/W
263 points/W
TOTAL
2678 points/W
2988 points/W

Performance/GHz
i5-6400
i5-5675R
Test#1 (Integers)
6394 points/GHz
6087 points/GHz
Test#2 (FP)
5539 points/GHz
5164 points/GHz
Test#3 (Generic, ZIP)
1279 points/GHz
1445 points/GHz
Test#1 (Memory)
1348 points/GHz
1590 points/GHz
TOTAL
14560 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