Core i5-4278U vs i7-8665U
Description
The i5-4278U is based on Haswell architecture while the i7-8665U is based on Whiskey Lake.
Using the multithread performance as a reference, the i5-4278U gets a score of 76.2 k points while the i7-8665U gets 123.1 k points.
Summarizing, the i7-8665U is 1.6 times faster than the i5-4278U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i5-4278U gets a score of 76.2 k points while the i7-8665U gets 123.1 k points.
Summarizing, the i7-8665U is 1.6 times faster than the i5-4278U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
40651
806ec
Core
Haswell
Whiskey Lake-U
Base frecuency
2.6 GHz
1.9 GHz
Boost frecuency
3.1 GHz
4.8 GHz
Socket
BGA 1168
BGA 1528
Cores/Threads
2/4
4/8
TDP
28 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
July 2014
April 2019
Mean monothread perf.
34.55k points
41.66k points
Mean multithread perf.
76.18k points
123.09k 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
i5-4278U
i7-8665U
Test#1 (Integers)
17.58k
16.92k (x0.96)
Test#2 (FP)
9.35k
15.41k (x1.65)
Test#3 (Generic, ZIP)
3.99k
3.33k (x0.83)
Test#1 (Memory)
3.64k
6k (x1.65)
TOTAL
34.55k
41.66k (x1.21)
Multithread
i5-4278U
i7-8665U
Test#1 (Integers)
38.45k
53.19k (x1.38)
Test#2 (FP)
23.07k
52.4k (x2.27)
Test#3 (Generic, ZIP)
10k
11.67k (x1.17)
Test#1 (Memory)
4.65k
5.83k (x1.25)
TOTAL
76.18k
123.09k (x1.62)
Performance/W
i5-4278U
i7-8665U
Test#1 (Integers)
1373 points/W
3546 points/W
Test#2 (FP)
824 points/W
3493 points/W
Test#3 (Generic, ZIP)
357 points/W
778 points/W
Test#1 (Memory)
166 points/W
389 points/W
TOTAL
2721 points/W
8206 points/W
Performance/GHz
i5-4278U
i7-8665U
Test#1 (Integers)
5670 points/GHz
3525 points/GHz
Test#2 (FP)
3015 points/GHz
3210 points/GHz
Test#3 (Generic, ZIP)
1288 points/GHz
694 points/GHz
Test#1 (Memory)
1173 points/GHz
1251 points/GHz
TOTAL
11145 points/GHz
8680 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4