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Core i7-6820HQ vs i5-7300HQ


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

Using the multithread performance as a reference, the i7-6820HQ gets a score of 206.3 k points while the i5-7300HQ gets 177.7 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
506e3
906e9
Core
Skylake-H
Kaby Lake-H
Architecture
Base frecuency
2.7 GHz
2.5 GHz
Boost frecuency
3.6 GHz
3.5 GHz
Socket
BGA1440
BGA1440
Cores/Threads
4/8
4/4
TDP
45 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
October 2015
January 2017

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
i7-6820HQ
i5-7300HQ
Test#1 (Integers)
3180
3413 (7.33%)
Test#2 (FP)
13020
14138 (8.58%)
Test#3 (Generic, ZIP)
4169
4408 (5.74%)
Test#1 (Memory)
6931
8870 (27.98%)
TOTAL
27299
30829 (12.93%)

Multithread

i7-6820HQ

i5-7300HQ
Test#1 (Integers)
13259
12747 (-3.86%)
Test#2 (FP)
62228
52878 (-15.03%)
Test#3 (Generic, ZIP)
20342
16254 (-20.10%)
Test#1 (Memory)
5464
8975 (64.28%)
TOTAL
101292
90854 (-10.30%)

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
i7-6820HQ
i5-7300HQ
Test#1 (Integers)
11536
11715 (1.55%)
Test#2 (FP)
16687
16739 (0.31%)
Test#3 (Generic, ZIP)
4514
4274 (-5.33%)
Test#1 (Memory)
7273
7808 (7.35%)
TOTAL
40011
40535 (1.31%)

Multithread

i7-6820HQ

i5-7300HQ
Test#1 (Integers)
48501
44380 (-8.50%)
Test#2 (FP)
77016
62550 (-18.78%)
Test#3 (Generic, ZIP)
21301
15605 (-26.74%)
Test#1 (Memory)
5242
7849 (49.73%)
TOTAL
152060
130384 (-14.26%)

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
i7-6820HQ
i5-7300HQ
Test#1 (Integers)
11784
11586 (-1.68%)
Test#2 (FP)
18056
17891 (-0.92%)
Test#3 (Generic, ZIP)
4479
4140 (-7.58%)
Test#1 (Memory)
7117
7883 (10.76%)
TOTAL
41437
41499 (0.15%)

Multithread

i7-6820HQ

i5-7300HQ
Test#1 (Integers)
49458
44416 (-10.20%)
Test#2 (FP)
84798
67501 (-20.40%)
Test#3 (Generic, ZIP)
20703
14596 (-29.50%)
Test#1 (Memory)
4770
8063 (69.03%)
TOTAL
159730
134576 (-15.75%)

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
i7-6820HQ
i5-7300HQ
Test#1 (Integers)
21147
22272 (5.32%)
Test#2 (FP)
18663
19823 (6.22%)
Test#3 (Generic, ZIP)
4359
4560 (4.61%)
Test#1 (Memory)
6240
8823 (41.39%)
TOTAL
50409
55478 (10.06%)

Multithread

i7-6820HQ

i5-7300HQ
Test#1 (Integers)
91901
81107 (-11.75%)
Test#2 (FP)
87330
72273 (-17.24%)
Test#3 (Generic, ZIP)
20715
16141 (-22.08%)
Test#1 (Memory)
6325
8179 (29.31%)
TOTAL
206271
177700 (-13.85%)

Performance/W
i7-6820HQ
i5-7300HQ
Test#1 (Integers)
2042 points/W
1802 points/W
Test#2 (FP)
1941 points/W
1606 points/W
Test#3 (Generic, ZIP)
460 points/W
359 points/W
Test#1 (Memory)
141 points/W
182 points/W
TOTAL
4584 points/W
3949 points/W

Performance/GHz
i7-6820HQ
i5-7300HQ
Test#1 (Integers)
5874 points/GHz
6363 points/GHz
Test#2 (FP)
5184 points/GHz
5664 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1303 points/GHz
Test#1 (Memory)
1733 points/GHz
2521 points/GHz
TOTAL
14002 points/GHz
15851 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. 3.7.8