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Core i7-9750H vs i7-8650U


Description
The i7-9750H is based on Coffee Lake architecture while the i7-8650U is based on Kaby Lake.

Using the multithread performance as a reference, the i7-9750H gets a score of 286.4 k points while the i7-8650U gets 173.5 k points.

Summarizing, the i7-9750H is 1.7 times faster than the i7-8650U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
806ea
Core
Coffee Lake-H
Kaby Lake-R
Architecture
Base frecuency
2.6 GHz
1.9 GHz
Boost frecuency
4.5 GHz
4.2 GHz
Socket
BGA 1440
BGA 1356
Cores/Threads
6/12
4/8
TDP
45 W
15 W
Cache L1 (d+i)
6x32+6x32 kB
4x32+4x32 kB
Cache L2
6x256 kB
4x256 kB
Cache L3
12288 kB
8192 kB
Date
April 2019
August 2017
Mean monothread perf.
65.33k points
55.86k points
Mean multithread perf.
286.43k points
173.49k 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
i7-9750H
i7-8650U
Test#1 (Integers)
25.93k
21.61k (x0.83)
Test#2 (FP)
22.84k
19.69k (x0.86)
Test#3 (Generic, ZIP)
5.11k
4.61k (x0.9)
Test#1 (Memory)
11.46k
9.95k (x0.87)
TOTAL
65.33k
55.86k (x0.85)

Multithread

i7-9750H

i7-8650U
Test#1 (Integers)
130.68k
78.38k (x0.6)
Test#2 (FP)
119.91k
72.02k (x0.6)
Test#3 (Generic, ZIP)
28.76k
16.95k (x0.59)
Test#1 (Memory)
7.08k
6.15k (x0.87)
TOTAL
286.43k
173.49k (x0.61)

Performance/W
i7-9750H
i7-8650U
Test#1 (Integers)
2904 points/W
5225 points/W
Test#2 (FP)
2665 points/W
4802 points/W
Test#3 (Generic, ZIP)
639 points/W
1130 points/W
Test#1 (Memory)
157 points/W
410 points/W
TOTAL
6365 points/W
11566 points/W

Performance/GHz
i7-9750H
i7-8650U
Test#1 (Integers)
5762 points/GHz
5146 points/GHz
Test#2 (FP)
5075 points/GHz
4689 points/GHz
Test#3 (Generic, ZIP)
1135 points/GHz
1097 points/GHz
Test#1 (Memory)
2547 points/GHz
2368 points/GHz
TOTAL
14519 points/GHz
13300 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