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Core i3-8350K vs i7-8650U


Description
The i3-8350K is based on Coffee Lake architecture while the i7-8650U is based on Kaby Lake.

Using the multithread performance as a reference, the i3-8350K gets a score of 237.6 k points while the i7-8650U gets 173.5 k points.

Summarizing, the i3-8350K is 1.4 times faster than the i7-8650U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906eb
806ea
Core
Coffee Lake-S
Kaby Lake-R
Architecture
Base frecuency
4 GHz
1.9 GHz
Boost frecuency
4 GHz
4.2 GHz
Socket
LGA 1151
BGA 1356
Cores/Threads
4/4
4/8
TDP
91 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
October 2017
August 2017
Mean monothread perf.
68.36k points
55.86k points
Mean multithread perf.
237.63k 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
i3-8350K
i7-8650U
Test#1 (Integers)
27.29k
21.61k (x0.79)
Test#2 (FP)
24.19k
19.69k (x0.81)
Test#3 (Generic, ZIP)
5.75k
4.61k (x0.8)
Test#1 (Memory)
11.13k
9.95k (x0.89)
TOTAL
68.36k
55.86k (x0.82)

Multithread

i3-8350K

i7-8650U
Test#1 (Integers)
107.78k
78.38k (x0.73)
Test#2 (FP)
95.93k
72.02k (x0.75)
Test#3 (Generic, ZIP)
22.65k
16.95k (x0.75)
Test#1 (Memory)
11.26k
6.15k (x0.55)
TOTAL
237.63k
173.49k (x0.73)

Performance/W
i3-8350K
i7-8650U
Test#1 (Integers)
1184 points/W
5225 points/W
Test#2 (FP)
1054 points/W
4802 points/W
Test#3 (Generic, ZIP)
249 points/W
1130 points/W
Test#1 (Memory)
124 points/W
410 points/W
TOTAL
2611 points/W
11566 points/W

Performance/GHz
i3-8350K
i7-8650U
Test#1 (Integers)
6823 points/GHz
5146 points/GHz
Test#2 (FP)
6048 points/GHz
4689 points/GHz
Test#3 (Generic, ZIP)
1436 points/GHz
1097 points/GHz
Test#1 (Memory)
2784 points/GHz
2368 points/GHz
TOTAL
17091 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