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Core i7-6820HQ vs i7-8650U


Description
The i7-6820HQ is based on Skylake architecture while the i7-8650U 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 i7-8650U gets 171.6 k points.

Summarizing, the i7-6820HQ is 1.2 times faster than the i7-8650U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
806ea
Core
Skylake-H
Kaby Lake-R
Architecture
Base frecuency
2.7 GHz
1.9 GHz
Boost frecuency
3.6 GHz
4.2 GHz
Socket
BGA1440
BGA 1356
Cores/Threads
4/8
4/8
TDP
45 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
8192 kB
Date
October 2015
August 2017

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
i7-8650U
Test#1 (Integers)
21147
20772 (-1.77%)
Test#2 (FP)
18663
19475 (4.36%)
Test#3 (Generic, ZIP)
4359
4481 (2.78%)
Test#1 (Memory)
6240
9686 (55.22%)
TOTAL
50409
54414 (7.95%)

Multithread

i7-6820HQ

i7-8650U
Test#1 (Integers)
91901
76878 (-16.35%)
Test#2 (FP)
87330
72441 (-17.05%)
Test#3 (Generic, ZIP)
20715
16169 (-21.95%)
Test#1 (Memory)
6325
6120 (-3.25%)
TOTAL
206271
171607 (-16.81%)

Performance/W
i7-6820HQ
i7-8650U
Test#1 (Integers)
2042 points/W
5125 points/W
Test#2 (FP)
1941 points/W
4829 points/W
Test#3 (Generic, ZIP)
460 points/W
1078 points/W
Test#1 (Memory)
141 points/W
408 points/W
TOTAL
4584 points/W
11440 points/W

Performance/GHz
i7-6820HQ
i7-8650U
Test#1 (Integers)
5874 points/GHz
4946 points/GHz
Test#2 (FP)
5184 points/GHz
4637 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1067 points/GHz
Test#1 (Memory)
1733 points/GHz
2306 points/GHz
TOTAL
14002 points/GHz
12956 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