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Core i5-5675R vs i5-6400


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

Using the multithread performance as a reference, the i5-5675R gets a score of 194.2 k points while the i5-6400 gets 174.1 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
40671
506e3
Core
Bradwell-H
Skylake-S
Architecture
Base frecuency
3.1 GHz
2.7 GHz
Boost frecuency
3.6 GHz
3.3 GHz
Socket
BGA1364
LGA 1151
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
4096 kB
6144 kB
Date
June 2015
September 2015
Mean monothread perf.
51.43k points
48.05k points
Mean multithread perf.
194.2k points
174.05k 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
i5-5675R
i5-6400
Test#1 (Integers)
4.14k
3.2k (x0.77)
Test#2 (FP)
14.35k
12.81k (x0.89)
Test#3 (Generic, ZIP)
4.94k
4.18k (x0.85)
Test#1 (Memory)
5.47k
4.3k (x0.79)
TOTAL
28.91k
24.49k (x0.85)

Multithread

i5-5675R

i5-6400
Test#1 (Integers)
16.02k
11.45k (x0.71)
Test#2 (FP)
54.6k
46.67k (x0.85)
Test#3 (Generic, ZIP)
18.69k
14.69k (x0.79)
Test#1 (Memory)
16.87k
5.92k (x0.35)
TOTAL
106.18k
78.73k (x0.74)

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
i5-5675R
i5-6400
Test#1 (Integers)
12.86k
11.56k (x0.9)
Test#2 (FP)
16.85k
16.53k (x0.98)
Test#3 (Generic, ZIP)
5.19k
4.3k (x0.83)
Test#1 (Memory)
5.49k
3.97k (x0.72)
TOTAL
40.39k
36.36k (x0.9)

Multithread

i5-5675R

i5-6400
Test#1 (Integers)
50.07k
43.01k (x0.86)
Test#2 (FP)
64.61k
64.46k (x1)
Test#3 (Generic, ZIP)
19.84k
16.14k (x0.81)
Test#1 (Memory)
17.09k
5.91k (x0.35)
TOTAL
151.6k
129.51k (x0.85)

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
i5-5675R
i5-6400
Test#1 (Integers)
12.88k
11.82k (x0.92)
Test#2 (FP)
18.27k
18.36k (x1)
Test#3 (Generic, ZIP)
5.12k
4.43k (x0.86)
Test#1 (Memory)
5.45k
4.95k (x0.91)
TOTAL
41.72k
39.56k (x0.95)

Multithread

i5-5675R

i5-6400
Test#1 (Integers)
49.91k
46.04k (x0.92)
Test#2 (FP)
70.3k
69.47k (x0.99)
Test#3 (Generic, ZIP)
19.69k
16.33k (x0.83)
Test#1 (Memory)
16.92k
7.74k (x0.46)
TOTAL
156.83k
139.58k (x0.89)

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
i5-5675R
i5-6400
Test#1 (Integers)
21.91k
21.1k (x0.96)
Test#2 (FP)
18.59k
18.28k (x0.98)
Test#3 (Generic, ZIP)
5.2k
4.22k (x0.81)
Test#1 (Memory)
5.72k
4.45k (x0.78)
TOTAL
51.43k
48.05k (x0.93)

Multithread

i5-5675R

i5-6400
Test#1 (Integers)
84.92k
80.03k (x0.94)
Test#2 (FP)
72.09k
71.1k (x0.99)
Test#3 (Generic, ZIP)
20.13k
16.19k (x0.8)
Test#1 (Memory)
17.07k
6.73k (x0.39)
TOTAL
194.2k
174.05k (x0.9)

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

Performance/GHz
i5-5675R
i5-6400
Test#1 (Integers)
6087 points/GHz
6394 points/GHz
Test#2 (FP)
5164 points/GHz
5539 points/GHz
Test#3 (Generic, ZIP)
1445 points/GHz
1279 points/GHz
Test#1 (Memory)
1590 points/GHz
1348 points/GHz
TOTAL
14286 points/GHz
14560 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