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Core i5-6400 vs i5-4590S


Description
The i5-6400 is based on Skylake architecture while the i5-4590S is based on Haswell.

Using the multithread performance as a reference, the i5-6400 gets a score of 139.6 k points while the i5-4590S gets 117.8 k points.

Summarizing, the i5-6400 is 1.2 times faster than the i5-4590S . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
306c3
Core
Skylake-S
Haswell
Architecture
Base frecuency
2.7 GHz
3 GHz
Boost frecuency
3.3 GHz
3.7 GHz
Socket
LGA 1151
LGA 1150
Cores/Threads
4/4
4/4
TDP
65 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
6144 kB
Date
September 2015
May 2014
Mean monothread perf.
48.05k points
34.75k points
Mean multithread perf.
174.05k points
117.77k 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
i5-4590S
Test#1 (Integers)
3.2k
4.24k (x1.33)
Test#2 (FP)
12.81k
10.54k (x0.82)
Test#3 (Generic, ZIP)
4.18k
4.76k (x1.14)
Test#1 (Memory)
4.3k
4.29k (x1)
TOTAL
24.49k
23.84k (x0.97)

Multithread

i5-6400

i5-4590S
Test#1 (Integers)
11.45k
15.01k (x1.31)
Test#2 (FP)
46.67k
37.75k (x0.81)
Test#3 (Generic, ZIP)
14.69k
17.12k (x1.17)
Test#1 (Memory)
5.92k
8.48k (x1.43)
TOTAL
78.73k
78.37k (x1)

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
i5-4590S
Test#1 (Integers)
11.82k
13.19k (x1.12)
Test#2 (FP)
18.36k
12.31k (x0.67)
Test#3 (Generic, ZIP)
4.43k
4.98k (x1.12)
Test#1 (Memory)
4.95k
4.27k (x0.86)
TOTAL
39.56k
34.75k (x0.88)

Multithread

i5-6400

i5-4590S
Test#1 (Integers)
46.04k
47.15k (x1.02)
Test#2 (FP)
69.47k
44.1k (x0.63)
Test#3 (Generic, ZIP)
16.33k
17.93k (x1.1)
Test#1 (Memory)
7.74k
8.6k (x1.11)
TOTAL
139.58k
117.77k (x0.84)

Performance/W
i5-6400
i5-4590S
Test#1 (Integers)
708 points/W
725 points/W
Test#2 (FP)
1069 points/W
678 points/W
Test#3 (Generic, ZIP)
251 points/W
276 points/W
Test#1 (Memory)
119 points/W
132 points/W
TOTAL
2147 points/W
1812 points/W

Performance/GHz
i5-6400
i5-4590S
Test#1 (Integers)
3583 points/GHz
3564 points/GHz
Test#2 (FP)
5563 points/GHz
3326 points/GHz
Test#3 (Generic, ZIP)
1341 points/GHz
1345 points/GHz
Test#1 (Memory)
1500 points/GHz
1155 points/GHz
TOTAL
11987 points/GHz
9391 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