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Core i5-7300U vs i7-8665U


Description
The i5-7300U is based on Kaby Lake architecture while the i7-8665U is based on Whiskey Lake.

Using the multithread performance as a reference, the i5-7300U gets a score of 109.1 k points while the i7-8665U gets 109.7 k points.

Summarizing, the i7-8665U is 1 times faster than the i5-7300U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806e9
806ec
Core
Kaby Lake-U
Whiskey Lake-U
Architecture
Base frecuency
2.6 GHz
1.9 GHz
Boost frecuency
3.5 GHz
4.8 GHz
Socket
BGA1356
BGA 1528
Cores/Threads
2/4
4/8
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
3072 kB
8192 kB
Date
January 2017
April 2019
Mean monothread perf.
48.25k points
35.19k points
Mean multithread perf.
109.1k points
109.72k 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
i5-7300U
i7-8665U
Test#1 (Integers)
20.18k
14.38k (x0.71)
Test#2 (FP)
18.57k
13.43k (x0.72)
Test#3 (Generic, ZIP)
4.24k
2.87k (x0.68)
Test#1 (Memory)
5.25k
4.49k (x0.86)
TOTAL
48.25k
35.19k (x0.73)

Multithread

i5-7300U

i7-8665U
Test#1 (Integers)
47.75k
47.22k (x0.99)
Test#2 (FP)
44.82k
46.99k (x1.05)
Test#3 (Generic, ZIP)
10.82k
10.08k (x0.93)
Test#1 (Memory)
5.7k
5.42k (x0.95)
TOTAL
109.1k
109.72k (x1.01)

Performance/W
i5-7300U
i7-8665U
Test#1 (Integers)
3184 points/W
3148 points/W
Test#2 (FP)
2988 points/W
3133 points/W
Test#3 (Generic, ZIP)
721 points/W
672 points/W
Test#1 (Memory)
380 points/W
361 points/W
TOTAL
7273 points/W
7314 points/W

Performance/GHz
i5-7300U
i7-8665U
Test#1 (Integers)
5766 points/GHz
2996 points/GHz
Test#2 (FP)
5306 points/GHz
2799 points/GHz
Test#3 (Generic, ZIP)
1213 points/GHz
599 points/GHz
Test#1 (Memory)
1501 points/GHz
936 points/GHz
TOTAL
13785 points/GHz
7330 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