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Core i5-8265U vs i7-6820HQ


Description
The i5-8265U is based on Whiskey Lake architecture while the i7-6820HQ is based on Skylake.

Using the multithread performance as a reference, the i5-8265U gets a score of 149.5 k points while the i7-6820HQ gets 205.9 k points.

Summarizing, the i7-6820HQ is 1.4 times faster than the i5-8265U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806eb
506e3
Core
Whiskey Lake-U
Skylake-H
Architecture
Base frecuency
1.6 GHz
2.7 GHz
Boost frecuency
3.9 GHz
3.6 GHz
Socket
BGA 1528
BGA1440
Cores/Threads
4/8
4/8
TDP
15 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
8192 kB
Date
August 2018
October 2015
Mean monothread perf.
57.57k points
50.1k points
Mean multithread perf.
149.48k points
205.89k points

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
i5-8265U
i7-6820HQ
Test#1 (Integers)
24.32k
20.99k (x0.86)
Test#2 (FP)
20.35k
18.63k (x0.92)
Test#3 (Generic, ZIP)
4.38k
4.33k (x0.99)
Test#1 (Memory)
8.52k
6.15k (x0.72)
TOTAL
57.57k
50.1k (x0.87)

Multithread

i5-8265U

i7-6820HQ
Test#1 (Integers)
65.17k
91.8k (x1.41)
Test#2 (FP)
63.6k
87.24k (x1.37)
Test#3 (Generic, ZIP)
14.4k
20.55k (x1.43)
Test#1 (Memory)
6.31k
6.3k (x1)
TOTAL
149.48k
205.89k (x1.38)

Performance/W
i5-8265U
i7-6820HQ
Test#1 (Integers)
4345 points/W
2040 points/W
Test#2 (FP)
4240 points/W
1939 points/W
Test#3 (Generic, ZIP)
960 points/W
457 points/W
Test#1 (Memory)
421 points/W
140 points/W
TOTAL
9965 points/W
4575 points/W

Performance/GHz
i5-8265U
i7-6820HQ
Test#1 (Integers)
6235 points/GHz
5831 points/GHz
Test#2 (FP)
5219 points/GHz
5174 points/GHz
Test#3 (Generic, ZIP)
1124 points/GHz
1204 points/GHz
Test#1 (Memory)
2183 points/GHz
1708 points/GHz
TOTAL
14762 points/GHz
13917 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. 3.11.4