Core i7-6500U vs i7-8665U
Description
The i7-6500U is based on Skylake architecture while the i7-8665U is based on Whiskey Lake.
Using the multithread performance as a reference, the i7-6500U gets a score of 97.5 k points while the i7-8665U gets 123.1 k points.
Summarizing, the i7-8665U is 1.3 times faster than the i7-6500U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-6500U gets a score of 97.5 k points while the i7-8665U gets 123.1 k points.
Summarizing, the i7-8665U is 1.3 times faster than the i7-6500U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
406e3
806ec
Core
Skylake-U
Whiskey Lake-U
Base frecuency
2.5 GHz
1.9 GHz
Boost frecuency
3.1 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
4096 kB
4x256 kB
Cache L3
kB
8192 kB
Date
September 2015
April 2019
Mean monothread perf.
46.25k points
41.66k points
Mean multithread perf.
97.52k 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
i7-6500U
i7-8665U
Test#1 (Integers)
19.47k
16.92k (x0.87)
Test#2 (FP)
17.58k
15.41k (x0.88)
Test#3 (Generic, ZIP)
4.05k
3.33k (x0.82)
Test#1 (Memory)
5.15k
6k (x1.17)
TOTAL
46.25k
41.66k (x0.9)
Multithread
i7-6500U
i7-8665U
Test#1 (Integers)
42.05k
53.19k (x1.26)
Test#2 (FP)
40.2k
52.4k (x1.3)
Test#3 (Generic, ZIP)
9.4k
11.67k (x1.24)
Test#1 (Memory)
5.86k
5.83k (x0.99)
TOTAL
97.52k
123.09k (x1.26)
Performance/W
i7-6500U
i7-8665U
Test#1 (Integers)
2803 points/W
3546 points/W
Test#2 (FP)
2680 points/W
3493 points/W
Test#3 (Generic, ZIP)
626 points/W
778 points/W
Test#1 (Memory)
391 points/W
389 points/W
TOTAL
6501 points/W
8206 points/W
Performance/GHz
i7-6500U
i7-8665U
Test#1 (Integers)
6279 points/GHz
3525 points/GHz
Test#2 (FP)
5672 points/GHz
3210 points/GHz
Test#3 (Generic, ZIP)
1305 points/GHz
694 points/GHz
Test#1 (Memory)
1662 points/GHz
1251 points/GHz
TOTAL
14918 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