| | | | | | |

Core i7-5500U vs i5-6400


Description
The i7-5500U is based on Broadwell architecture while the i5-6400 is based on Skylake.

Using the multithread performance as a reference, the i7-5500U gets a score of 82.9 k points while the i5-6400 gets 174.1 k points.

Summarizing, the i5-6400 is 2.1 times faster than the i7-5500U . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306d4
506e3
Core
Broadwell-U
Skylake-S
Architecture
Base frecuency
2.4 GHz
2.7 GHz
Boost frecuency
3 GHz
3.3 GHz
Socket
BGA 1168
LGA 1151
Cores/Threads
2 /4
4/4
TDP
15 W
65 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
4096 kB
6144 kB
Date
March 2015
September 2015
Mean monothread perf.
40.41k points
48.05k points
Mean multithread perf.
82.89k 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
i7-5500U
i5-6400
Test#1 (Integers)
3.31k
3.2k (x0.97)
Test#2 (FP)
11.61k
12.81k (x1.1)
Test#3 (Generic, ZIP)
3.94k
4.18k (x1.06)
Test#1 (Memory)
3.24k
4.3k (x1.33)
TOTAL
22.1k
24.49k (x1.11)

Multithread

i7-5500U

i5-6400
Test#1 (Integers)
5.97k
11.45k (x1.92)
Test#2 (FP)
25.54k
46.67k (x1.83)
Test#3 (Generic, ZIP)
8.8k
14.69k (x1.67)
Test#1 (Memory)
3.36k
5.92k (x1.76)
TOTAL
43.67k
78.73k (x1.8)

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
i7-5500U
i5-6400
Test#1 (Integers)
10.59k
11.56k (x1.09)
Test#2 (FP)
13.72k
16.53k (x1.21)
Test#3 (Generic, ZIP)
4.22k
4.3k (x1.02)
Test#1 (Memory)
3.64k
3.97k (x1.09)
TOTAL
32.16k
36.36k (x1.13)

Multithread

i7-5500U

i5-6400
Test#1 (Integers)
20.8k
43.01k (x2.07)
Test#2 (FP)
30.44k
64.46k (x2.12)
Test#3 (Generic, ZIP)
9.1k
16.14k (x1.77)
Test#1 (Memory)
3.35k
5.91k (x1.76)
TOTAL
63.69k
129.51k (x2.03)

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
i7-5500U
i5-6400
Test#1 (Integers)
10.37k
11.82k (x1.14)
Test#2 (FP)
14.25k
18.36k (x1.29)
Test#3 (Generic, ZIP)
4.07k
4.43k (x1.09)
Test#1 (Memory)
3.12k
4.95k (x1.59)
TOTAL
31.81k
39.56k (x1.24)

Multithread

i7-5500U

i5-6400
Test#1 (Integers)
20.93k
46.04k (x2.2)
Test#2 (FP)
33.87k
69.47k (x2.05)
Test#3 (Generic, ZIP)
8.98k
16.33k (x1.82)
Test#1 (Memory)
3.35k
7.74k (x2.31)
TOTAL
67.13k
139.58k (x2.08)

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
i7-5500U
i5-6400
Test#1 (Integers)
17.76k
21.1k (x1.19)
Test#2 (FP)
14.9k
18.28k (x1.23)
Test#3 (Generic, ZIP)
4.17k
4.22k (x1.01)
Test#1 (Memory)
3.58k
4.45k (x1.24)
TOTAL
40.41k
48.05k (x1.19)

Multithread

i7-5500U

i5-6400
Test#1 (Integers)
34.9k
80.03k (x2.29)
Test#2 (FP)
35.07k
71.1k (x2.03)
Test#3 (Generic, ZIP)
9.28k
16.19k (x1.74)
Test#1 (Memory)
3.64k
6.73k (x1.85)
TOTAL
82.89k
174.05k (x2.1)

Performance/W
i7-5500U
i5-6400
Test#1 (Integers)
2327 points/W
1231 points/W
Test#2 (FP)
2338 points/W
1094 points/W
Test#3 (Generic, ZIP)
619 points/W
249 points/W
Test#1 (Memory)
243 points/W
104 points/W
TOTAL
5526 points/W
2678 points/W

Performance/GHz
i7-5500U
i5-6400
Test#1 (Integers)
5920 points/GHz
6394 points/GHz
Test#2 (FP)
4966 points/GHz
5539 points/GHz
Test#3 (Generic, ZIP)
1390 points/GHz
1279 points/GHz
Test#1 (Memory)
1193 points/GHz
1348 points/GHz
TOTAL
13469 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