| | | | | | |

Core i7-8650U vs i7-8565U


Description
The i7-8650U is based on Kaby Lake architecture while the i7-8565U is based on Whiskey Lake.

Using the multithread performance as a reference, the i7-8650U gets a score of 173.5 k points while the i7-8565U gets 142.5 k points.

Summarizing, the i7-8650U is 1.2 times faster than the i7-8565U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ea
806eb
Core
Kaby Lake-R
Whiskey Lake-U
Architecture
Base frecuency
1.9 GHz
1.8 GHz
Boost frecuency
4.2 GHz
4.6 GHz
Socket
BGA 1356
BGA 1528
Cores/Threads
4/8
4/8
TDP
15 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
August 2017
August 2018
Mean monothread perf.
55.86k points
67.83k points
Mean multithread perf.
173.49k points
142.55k 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
i7-8650U
i7-8565U
Test#1 (Integers)
21.61k
27.2k (x1.26)
Test#2 (FP)
19.69k
23.47k (x1.19)
Test#3 (Generic, ZIP)
4.61k
4.91k (x1.06)
Test#1 (Memory)
9.95k
12.25k (x1.23)
TOTAL
55.86k
67.83k (x1.21)

Multithread

i7-8650U

i7-8565U
Test#1 (Integers)
78.38k
64.33k (x0.82)
Test#2 (FP)
72.02k
58.47k (x0.81)
Test#3 (Generic, ZIP)
16.95k
15.82k (x0.93)
Test#1 (Memory)
6.15k
3.93k (x0.64)
TOTAL
173.49k
142.55k (x0.82)

Performance/W
i7-8650U
i7-8565U
Test#1 (Integers)
5225 points/W
4288 points/W
Test#2 (FP)
4802 points/W
3898 points/W
Test#3 (Generic, ZIP)
1130 points/W
1055 points/W
Test#1 (Memory)
410 points/W
262 points/W
TOTAL
11566 points/W
9503 points/W

Performance/GHz
i7-8650U
i7-8565U
Test#1 (Integers)
5146 points/GHz
5914 points/GHz
Test#2 (FP)
4689 points/GHz
5103 points/GHz
Test#3 (Generic, ZIP)
1097 points/GHz
1067 points/GHz
Test#1 (Memory)
2368 points/GHz
2663 points/GHz
TOTAL
13300 points/GHz
14746 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