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Core i7-6820HQ vs i5-6300HQ


Description
Both models i7-6820HQ and i5-6300HQ are based on Skylake architecture.

Sky Lake is also known as 6th generation Core. Include Thunderbolt 3.0, SATA Express and Iris Pro graphics with DirectX 12. It uses LGA 1151 socket for mainstream models and LGA 2066 for X-Series. Sky Lake comes with AVX2 support in all mainstreams CPUs and AVX-512 in some high end models.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 206.3 k points while the i5-6300HQ gets 159.4 k points.

Summarizing, the i7-6820HQ is 1.3 times faster than the i5-6300HQ. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
506e3
Core
Skylake-H
Skylake-H
Architecture
Base frecuency
2.7 GHz
2.3 GHz
Boost frecuency
3.6 GHz
3.2 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
September 2015

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
i5-6300HQ
Test#1 (Integers)
21147
18893 (-10.66%)
Test#2 (FP)
18663
16234 (-13.01%)
Test#3 (Generic, ZIP)
4359
3832 (-12.09%)
Test#1 (Memory)
6240
6145 (-1.53%)
TOTAL
50409
45104 (-10.52%)

Multithread

i7-6820HQ

i5-6300HQ
Test#1 (Integers)
91901
74035 (-19.44%)
Test#2 (FP)
87330
66345 (-24.03%)
Test#3 (Generic, ZIP)
20715
15180 (-26.72%)
Test#1 (Memory)
6325
3802 (-39.89%)
TOTAL
206271
159361 (-22.74%)

Performance/W
i7-6820HQ
i5-6300HQ
Test#1 (Integers)
2042 points/W
1645 points/W
Test#2 (FP)
1941 points/W
1474 points/W
Test#3 (Generic, ZIP)
460 points/W
337 points/W
Test#1 (Memory)
141 points/W
84 points/W
TOTAL
4584 points/W
3541 points/W

Performance/GHz
i7-6820HQ
i5-6300HQ
Test#1 (Integers)
5874 points/GHz
5904 points/GHz
Test#2 (FP)
5184 points/GHz
5073 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1198 points/GHz
Test#1 (Memory)
1733 points/GHz
1920 points/GHz
TOTAL
14002 points/GHz
14095 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