| | | | | | |

Core i5-6400 vs i7-9850H


Description
The i5-6400 is based on Skylake architecture while the i7-9850H is based on Coffee Lake.

Using the multithread performance as a reference, the i5-6400 gets a score of 174.1 k points while the i7-9850H gets 289.3 k points.

Summarizing, the i7-9850H is 1.7 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
906ed
Core
Skylake-S
Coffee Lake-H
Architecture
Base frecuency
2.7 GHz
2.6 GHz
Boost frecuency
3.3 GHz
4.6 GHz
Socket
LGA 1151
BGA 1440
Cores/Threads
4/4
6/12
TDP
65 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
6144 kB
12288 kB
Date
September 2015
June 2019
Mean monothread perf.
48.05k points
49.24k points
Mean multithread perf.
174.05k points
289.3k 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
i7-9850H
Test#1 (Integers)
3.2k
4.11k (x1.28)
Test#2 (FP)
12.81k
15.19k (x1.19)
Test#3 (Generic, ZIP)
4.18k
5.04k (x1.21)
Test#1 (Memory)
4.3k
11.98k (x2.78)
TOTAL
24.49k
36.32k (x1.48)

Multithread

i5-6400

i7-9850H
Test#1 (Integers)
11.45k
22.68k (x1.98)
Test#2 (FP)
46.67k
83.77k (x1.79)
Test#3 (Generic, ZIP)
14.69k
30.37k (x2.07)
Test#1 (Memory)
5.92k
8.55k (x1.44)
TOTAL
78.73k
145.37k (x1.85)

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
i7-9850H
Test#1 (Integers)
11.56k
14.5k (x1.25)
Test#2 (FP)
16.53k
20.73k (x1.25)
Test#3 (Generic, ZIP)
4.3k
5.31k (x1.24)
Test#1 (Memory)
3.97k
11.09k (x2.79)
TOTAL
36.36k
51.62k (x1.42)

Multithread

i5-6400

i7-9850H
Test#1 (Integers)
43.01k
77.18k (x1.79)
Test#2 (FP)
64.46k
126.35k (x1.96)
Test#3 (Generic, ZIP)
16.14k
33.63k (x2.08)
Test#1 (Memory)
5.91k
7.87k (x1.33)
TOTAL
129.51k
245.03k (x1.89)

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
i5-6400
i7-9850H
Test#1 (Integers)
21.1k
19.83k (x0.94)
Test#2 (FP)
18.28k
16.52k (x0.9)
Test#3 (Generic, ZIP)
4.22k
3.87k (x0.92)
Test#1 (Memory)
4.45k
9.02k (x2.03)
TOTAL
48.05k
49.24k (x1.02)

Multithread

i5-6400

i7-9850H
Test#1 (Integers)
80.03k
130.19k (x1.63)
Test#2 (FP)
71.1k
121.44k (x1.71)
Test#3 (Generic, ZIP)
16.19k
28.05k (x1.73)
Test#1 (Memory)
6.73k
9.62k (x1.43)
TOTAL
174.05k
289.3k (x1.66)

Performance/W
i5-6400
i7-9850H
Test#1 (Integers)
1231 points/W
2893 points/W
Test#2 (FP)
1094 points/W
2699 points/W
Test#3 (Generic, ZIP)
249 points/W
623 points/W
Test#1 (Memory)
104 points/W
214 points/W
TOTAL
2678 points/W
6429 points/W

Performance/GHz
i5-6400
i7-9850H
Test#1 (Integers)
6394 points/GHz
4311 points/GHz
Test#2 (FP)
5539 points/GHz
3591 points/GHz
Test#3 (Generic, ZIP)
1279 points/GHz
841 points/GHz
Test#1 (Memory)
1348 points/GHz
1961 points/GHz
TOTAL
14560 points/GHz
10703 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