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Core i7-8665U vs i5-4440


Description
The i7-8665U is based on Whiskey Lake architecture while the i5-4440 is based on Haswell.

Using the multithread performance as a reference, the i7-8665U gets a score of 109.7 k points while the i5-4440 gets 138.7 k points.

Summarizing, the i5-4440 is 1.3 times faster than the i7-8665U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ec
306c3
Core
Whiskey Lake-U
Haswell
Architecture
Base frecuency
1.9 GHz
3.1 GHz
Boost frecuency
4.8 GHz
3.3 GHz
Socket
BGA 1528
LGA 1150
Cores/Threads
4/8
4/4
TDP
15 W
84 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
April 2019
June 2013
Mean monothread perf.
35.19k points
38.29k points
Mean multithread perf.
109.72k points
138.69k 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
i7-8665U
i5-4440
Test#1 (Integers)
14.38k
19.08k (x1.33)
Test#2 (FP)
13.43k
10.47k (x0.78)
Test#3 (Generic, ZIP)
2.87k
4.53k (x1.58)
Test#1 (Memory)
4.49k
4.21k (x0.94)
TOTAL
35.19k
38.29k (x1.09)

Multithread

i7-8665U

i5-4440
Test#1 (Integers)
47.22k
73.26k (x1.55)
Test#2 (FP)
46.99k
41.01k (x0.87)
Test#3 (Generic, ZIP)
10.08k
17.12k (x1.7)
Test#1 (Memory)
5.42k
7.3k (x1.35)
TOTAL
109.72k
138.69k (x1.26)

Performance/W
i7-8665U
i5-4440
Test#1 (Integers)
3148 points/W
872 points/W
Test#2 (FP)
3133 points/W
488 points/W
Test#3 (Generic, ZIP)
672 points/W
204 points/W
Test#1 (Memory)
361 points/W
87 points/W
TOTAL
7314 points/W
1651 points/W

Performance/GHz
i7-8665U
i5-4440
Test#1 (Integers)
2996 points/GHz
5783 points/GHz
Test#2 (FP)
2799 points/GHz
3174 points/GHz
Test#3 (Generic, ZIP)
599 points/GHz
1372 points/GHz
Test#1 (Memory)
936 points/GHz
1275 points/GHz
TOTAL
7330 points/GHz
11604 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