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Core i7-6820HQ vs i5-7300U


Description
The i7-6820HQ is based on Skylake architecture while the i5-7300U 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 i5-7300U gets 109.1 k points.

Summarizing, the i7-6820HQ is 1.9 times faster than the i5-7300U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
806e9
Core
Skylake-H
Kaby Lake-U
Architecture
Base frecuency
2.7 GHz
2.6 GHz
Boost frecuency
3.6 GHz
3.5 GHz
Socket
BGA1440
BGA1356
Cores/Threads
4/8
2/4
TDP
45 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
8192 kB
3072 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
i5-7300U
Test#1 (Integers)
3180
3107 (-2.29%)
Test#2 (FP)
13020
12238 (-6.01%)
Test#3 (Generic, ZIP)
4169
4105 (-1.54%)
Test#1 (Memory)
6931
4957 (-28.48%)
TOTAL
27299
24406 (-10.60%)

Multithread

i7-6820HQ

i5-7300U
Test#1 (Integers)
13259
6976 (-47.38%)
Test#2 (FP)
62228
32048 (-48.50%)
Test#3 (Generic, ZIP)
20342
10816 (-46.83%)
Test#1 (Memory)
5464
5515 (0.94%)
TOTAL
101292
55356 (-45.35%)

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
i5-7300U
Test#1 (Integers)
11536
9958 (-13.68%)
Test#2 (FP)
16687
15107 (-9.47%)
Test#3 (Generic, ZIP)
4514
3867 (-14.35%)
Test#1 (Memory)
7273
4537 (-37.63%)
TOTAL
40011
33469 (-16.35%)

Multithread

i7-6820HQ

i5-7300U
Test#1 (Integers)
48501
25264 (-47.91%)
Test#2 (FP)
77016
40604 (-47.28%)
Test#3 (Generic, ZIP)
21301
11243 (-47.22%)
Test#1 (Memory)
5242
5832 (11.25%)
TOTAL
152060
82943 (-45.45%)

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
i5-7300U
Test#1 (Integers)
11784
9854 (-16.38%)
Test#2 (FP)
18056
17366 (-3.82%)
Test#3 (Generic, ZIP)
4479
3979 (-11.17%)
Test#1 (Memory)
7117
5115 (-28.13%)
TOTAL
41437
36314 (-12.36%)

Multithread

i7-6820HQ

i5-7300U
Test#1 (Integers)
49458
25372 (-48.70%)
Test#2 (FP)
84798
43433 (-48.78%)
Test#3 (Generic, ZIP)
20703
10617 (-48.72%)
Test#1 (Memory)
4770
5396 (13.11%)
TOTAL
159730
84818 (-46.90%)

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
i5-7300U
Test#1 (Integers)
21147
20179 (-4.57%)
Test#2 (FP)
18663
18569 (-0.50%)
Test#3 (Generic, ZIP)
4359
4244 (-2.65%)
Test#1 (Memory)
6240
5255 (-15.79%)
TOTAL
50409
48247 (-4.29%)

Multithread

i7-6820HQ

i5-7300U
Test#1 (Integers)
91901
47755 (-48.04%)
Test#2 (FP)
87330
44824 (-48.67%)
Test#3 (Generic, ZIP)
20715
10822 (-47.76%)
Test#1 (Memory)
6325
5699 (-9.91%)
TOTAL
206271
109099 (-47.11%)

Performance/W
i7-6820HQ
i5-7300U
Test#1 (Integers)
2042 points/W
3184 points/W
Test#2 (FP)
1941 points/W
2988 points/W
Test#3 (Generic, ZIP)
460 points/W
721 points/W
Test#1 (Memory)
141 points/W
380 points/W
TOTAL
4584 points/W
7273 points/W

Performance/GHz
i7-6820HQ
i5-7300U
Test#1 (Integers)
5874 points/GHz
5766 points/GHz
Test#2 (FP)
5184 points/GHz
5306 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1213 points/GHz
Test#1 (Memory)
1733 points/GHz
1501 points/GHz
TOTAL
14002 points/GHz
13785 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