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Core i5-6400 vs i7-10870H


Description
The i5-6400 is based on Skylake architecture while the i7-10870H is based on Comet Lake.

Using the multithread performance as a reference, the i5-6400 gets a score of 174.1 k points while the i7-10870H gets 487 k points.

Summarizing, the i7-10870H is 2.8 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
a0652
Core
Skylake-S
Comet Lake-H
Architecture
Base frecuency
2.7 GHz
2.2 GHz
Boost frecuency
3.3 GHz
5 GHz
Socket
LGA 1151
FC-BGA 1440
Cores/Threads
4/4
8/16
TDP
65 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
8x32+8x32 kB
Cache L2
4x256 kB
8x256 kB
Cache L3
6144 kB
16384 kB
Date
September 2015
September 2020
Mean monothread perf.
48.05k points
79.2k points
Mean multithread perf.
174.05k points
487.05k 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
i5-6400
i7-10870H
Test#1 (Integers)
3.2k
4.77k (x1.49)
Test#2 (FP)
12.81k
19.81k (x1.55)
Test#3 (Generic, ZIP)
4.18k
6.29k (x1.51)
Test#1 (Memory)
4.3k
14.03k (x3.26)
TOTAL
24.49k
44.9k (x1.83)

Multithread

i5-6400

i7-10870H
Test#1 (Integers)
11.45k
31.21k (x2.73)
Test#2 (FP)
46.67k
151.01k (x3.24)
Test#3 (Generic, ZIP)
14.69k
50.13k (x3.41)
Test#1 (Memory)
5.92k
8.37k (x1.41)
TOTAL
78.73k
240.71k (x3.06)

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
i7-10870H
Test#1 (Integers)
11.56k
17.17k (x1.49)
Test#2 (FP)
16.53k
25.26k (x1.53)
Test#3 (Generic, ZIP)
4.3k
6.7k (x1.56)
Test#1 (Memory)
3.97k
13.81k (x3.48)
TOTAL
36.36k
62.95k (x1.73)

Multithread

i5-6400

i7-10870H
Test#1 (Integers)
43.01k
116.68k (x2.71)
Test#2 (FP)
64.46k
187.28k (x2.91)
Test#3 (Generic, ZIP)
16.14k
51.52k (x3.19)
Test#1 (Memory)
5.91k
8.39k (x1.42)
TOTAL
129.51k
363.87k (x2.81)

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
i7-10870H
Test#1 (Integers)
11.82k
16.14k (x1.36)
Test#2 (FP)
18.36k
24.74k (x1.35)
Test#3 (Generic, ZIP)
4.43k
5.98k (x1.35)
Test#1 (Memory)
4.95k
12.7k (x2.56)
TOTAL
39.56k
59.55k (x1.51)

Multithread

i5-6400

i7-10870H
Test#1 (Integers)
46.04k
117.03k (x2.54)
Test#2 (FP)
69.47k
199.88k (x2.88)
Test#3 (Generic, ZIP)
16.33k
50.64k (x3.1)
Test#1 (Memory)
7.74k
8.23k (x1.06)
TOTAL
139.58k
375.77k (x2.69)

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
i7-10870H
Test#1 (Integers)
21.1k
30.38k (x1.44)
Test#2 (FP)
18.28k
27.95k (x1.53)
Test#3 (Generic, ZIP)
4.22k
6.51k (x1.54)
Test#1 (Memory)
4.45k
14.37k (x3.23)
TOTAL
48.05k
79.2k (x1.65)

Multithread

i5-6400

i7-10870H
Test#1 (Integers)
80.03k
216.18k (x2.7)
Test#2 (FP)
71.1k
210.82k (x2.97)
Test#3 (Generic, ZIP)
16.19k
51.57k (x3.19)
Test#1 (Memory)
6.73k
8.47k (x1.26)
TOTAL
174.05k
487.05k (x2.8)

Performance/W
i5-6400
i7-10870H
Test#1 (Integers)
1231 points/W
4804 points/W
Test#2 (FP)
1094 points/W
4685 points/W
Test#3 (Generic, ZIP)
249 points/W
1146 points/W
Test#1 (Memory)
104 points/W
188 points/W
TOTAL
2678 points/W
10823 points/W

Performance/GHz
i5-6400
i7-10870H
Test#1 (Integers)
6394 points/GHz
6075 points/GHz
Test#2 (FP)
5539 points/GHz
5589 points/GHz
Test#3 (Generic, ZIP)
1279 points/GHz
1302 points/GHz
Test#1 (Memory)
1348 points/GHz
2873 points/GHz
TOTAL
14560 points/GHz
15840 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