| | | |

Core i7-6820HQ vs i7-8750H


Description
The i7-6820HQ is based on Skylake architecture while the i7-8750H is based on Coffee Lake.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 206.3 k points while the i7-8750H gets 243.6 k points.

Summarizing, the i7-8750H is 1.2 times faster than the i7-6820HQ. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
906ea
Core
Skylake-H
Coffee Lake-H
Architecture
Base frecuency
2.7 GHz
2.2 GHz
Boost frecuency
3.6 GHz
4.1 GHz
Socket
BGA1440
BGA1440
Cores/Threads
4/8
6/12
TDP
45 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
8192 kB
9216 kB
Date
October 2015
April 2018

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
i7-8750H
Test#1 (Integers)
11784
15137 (28.45%)
Test#2 (FP)
18056
22803 (26.29%)
Test#3 (Generic, ZIP)
4479
5503 (22.85%)
Test#1 (Memory)
7117
10965 (54.07%)
TOTAL
41437
54408 (31.30%)

Multithread

i7-6820HQ

i7-8750H
Test#1 (Integers)
49458
82815 (67.44%)
Test#2 (FP)
84798
118584 (39.84%)
Test#3 (Generic, ZIP)
20703
25084 (21.16%)
Test#1 (Memory)
4770
4860 (1.87%)
TOTAL
159730
231341 (44.83%)

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
i7-8750H
Test#1 (Integers)
21147
26989 (27.63%)
Test#2 (FP)
18663
23867 (27.89%)
Test#3 (Generic, ZIP)
4359
5574 (27.87%)
Test#1 (Memory)
6240
9029 (44.70%)
TOTAL
50409
65460 (29.86%)

Multithread

i7-6820HQ

i7-8750H
Test#1 (Integers)
91901
108991 (18.60%)
Test#2 (FP)
87330
104935 (20.16%)
Test#3 (Generic, ZIP)
20715
25210 (21.70%)
Test#1 (Memory)
6325
4504 (-28.80%)
TOTAL
206271
243640 (18.12%)

Performance/W
i7-6820HQ
i7-8750H
Test#1 (Integers)
2042 points/W
2422 points/W
Test#2 (FP)
1941 points/W
2332 points/W
Test#3 (Generic, ZIP)
460 points/W
560 points/W
Test#1 (Memory)
141 points/W
100 points/W
TOTAL
4584 points/W
5414 points/W

Performance/GHz
i7-6820HQ
i7-8750H
Test#1 (Integers)
5874 points/GHz
6583 points/GHz
Test#2 (FP)
5184 points/GHz
5821 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1360 points/GHz
Test#1 (Memory)
1733 points/GHz
2202 points/GHz
TOTAL
14002 points/GHz
15966 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