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Core i5-7300HQ vs i7-6820HQ


Description
The i5-7300HQ is based on Kaby Lake architecture while the i7-6820HQ is based on Skylake.

Using the multithread performance as a reference, the i5-7300HQ gets a score of 168.8 k points while the i7-6820HQ gets 205.9 k points.

Summarizing, the i7-6820HQ is 1.2 times faster than the i5-7300HQ. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
506e3
Core
Kaby Lake-H
Skylake-H
Architecture
Base frecuency
2.5 GHz
2.7 GHz
Boost frecuency
3.5 GHz
3.6 GHz
Socket
BGA1440
BGA1440
Cores/Threads
4/4
4/8
TDP
45 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
8192 kB
Date
January 2017
October 2015
Mean monothread perf.
53.51k points
50.1k points
Mean multithread perf.
168.81k points
205.89k 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
i5-7300HQ
i7-6820HQ
Test#1 (Integers)
3.41k
3.18k (x0.93)
Test#2 (FP)
14.14k
13.02k (x0.92)
Test#3 (Generic, ZIP)
4.41k
4.17k (x0.95)
Test#1 (Memory)
8.87k
6.93k (x0.78)
TOTAL
30.83k
27.3k (x0.89)

Multithread

i5-7300HQ

i7-6820HQ
Test#1 (Integers)
12.75k
13.26k (x1.04)
Test#2 (FP)
52.88k
62.23k (x1.18)
Test#3 (Generic, ZIP)
16.25k
20.34k (x1.25)
Test#1 (Memory)
8.98k
5.46k (x0.61)
TOTAL
90.85k
101.29k (x1.11)

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
i5-7300HQ
i7-6820HQ
Test#1 (Integers)
11.71k
11.54k (x0.98)
Test#2 (FP)
16.74k
16.69k (x1)
Test#3 (Generic, ZIP)
4.27k
4.51k (x1.06)
Test#1 (Memory)
7.81k
7.27k (x0.93)
TOTAL
40.53k
40.01k (x0.99)

Multithread

i5-7300HQ

i7-6820HQ
Test#1 (Integers)
44.38k
48.5k (x1.09)
Test#2 (FP)
62.55k
77.02k (x1.23)
Test#3 (Generic, ZIP)
15.6k
21.3k (x1.37)
Test#1 (Memory)
7.85k
5.24k (x0.67)
TOTAL
130.38k
152.06k (x1.17)

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
i5-7300HQ
i7-6820HQ
Test#1 (Integers)
11.59k
11.78k (x1.02)
Test#2 (FP)
17.89k
18.06k (x1.01)
Test#3 (Generic, ZIP)
4.14k
4.48k (x1.08)
Test#1 (Memory)
7.88k
7.12k (x0.9)
TOTAL
41.5k
41.44k (x1)

Multithread

i5-7300HQ

i7-6820HQ
Test#1 (Integers)
44.42k
49.46k (x1.11)
Test#2 (FP)
67.5k
84.8k (x1.26)
Test#3 (Generic, ZIP)
14.6k
20.7k (x1.42)
Test#1 (Memory)
8.06k
4.77k (x0.59)
TOTAL
134.58k
159.73k (x1.19)

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
i5-7300HQ
i7-6820HQ
Test#1 (Integers)
21.65k
20.99k (x0.97)
Test#2 (FP)
19.18k
18.63k (x0.97)
Test#3 (Generic, ZIP)
4.38k
4.33k (x0.99)
Test#1 (Memory)
8.3k
6.15k (x0.74)
TOTAL
53.51k
50.1k (x0.94)

Multithread

i5-7300HQ

i7-6820HQ
Test#1 (Integers)
77.12k
91.8k (x1.19)
Test#2 (FP)
68.68k
87.24k (x1.27)
Test#3 (Generic, ZIP)
15.24k
20.55k (x1.35)
Test#1 (Memory)
7.78k
6.3k (x0.81)
TOTAL
168.81k
205.89k (x1.22)

Performance/W
i5-7300HQ
i7-6820HQ
Test#1 (Integers)
1714 points/W
2040 points/W
Test#2 (FP)
1526 points/W
1939 points/W
Test#3 (Generic, ZIP)
339 points/W
457 points/W
Test#1 (Memory)
173 points/W
140 points/W
TOTAL
3751 points/W
4575 points/W

Performance/GHz
i5-7300HQ
i7-6820HQ
Test#1 (Integers)
6186 points/GHz
5831 points/GHz
Test#2 (FP)
5480 points/GHz
5174 points/GHz
Test#3 (Generic, ZIP)
1251 points/GHz
1204 points/GHz
Test#1 (Memory)
2372 points/GHz
1708 points/GHz
TOTAL
15289 points/GHz
13917 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