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Core i7-9750H vs i3-8350K


Description
Both models i7-9750H and i3-8350K are based on Coffee Lake architecture.

Coffee Lake is the second refinement of Intel’s 14nm (Tri-Gate) technology. While it uses LGA1151 socket, it is incompatible with previous generations due to electrical changes in socket’s pins so these CPUs require Z370 chipset. This kind of generation introduced more cores in every range to compete with new AMD’s architecture. Coffee Lake uses DDR4 memory at 2400MHz for i3 and at 2666MHz for i5, i7 CPUs plus iGPU frequency has been increased 50MHz with respect to previous generation.

Using the multithread performance as a reference, the i7-9750H gets a score of 276.5 k points while the i3-8350K gets 237.6 k points.

Summarizing, the i7-9750H is 1.2 times faster than the i3-8350K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ed
906eb
Core
Coffee Lake-H
Coffee Lake-S
Architecture
Base frecuency
2.6 GHz
4 GHz
Boost frecuency
4.5 GHz
4 GHz
Socket
BGA 1440
LGA 1151
Cores/Threads
6/12
4/4
TDP
45 W
91 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
October 2017
Mean monothread perf.
62.92k points
68.36k points
Mean multithread perf.
276.46k points
237.63k 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
i3-8350K
Test#1 (Integers)
25.22k
27.29k (x1.08)
Test#2 (FP)
21.97k
24.19k (x1.1)
Test#3 (Generic, ZIP)
5.02k
5.75k (x1.15)
Test#1 (Memory)
10.71k
11.13k (x1.04)
TOTAL
62.92k
68.36k (x1.09)

Multithread

i7-9750H

i3-8350K
Test#1 (Integers)
125.56k
107.78k (x0.86)
Test#2 (FP)
115.86k
95.93k (x0.83)
Test#3 (Generic, ZIP)
25.63k
22.65k (x0.88)
Test#1 (Memory)
9.4k
11.26k (x1.2)
TOTAL
276.46k
237.63k (x0.86)

Performance/W
i7-9750H
i3-8350K
Test#1 (Integers)
2790 points/W
1184 points/W
Test#2 (FP)
2575 points/W
1054 points/W
Test#3 (Generic, ZIP)
570 points/W
249 points/W
Test#1 (Memory)
209 points/W
124 points/W
TOTAL
6144 points/W
2611 points/W

Performance/GHz
i7-9750H
i3-8350K
Test#1 (Integers)
5605 points/GHz
6823 points/GHz
Test#2 (FP)
4882 points/GHz
6048 points/GHz
Test#3 (Generic, ZIP)
1115 points/GHz
1436 points/GHz
Test#1 (Memory)
2380 points/GHz
2784 points/GHz
TOTAL
13982 points/GHz
17091 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