Core i7-7500U vs i7-8550U
Description
Both models i7-7500U and i7-8550U are based on Kaby Lake architecture.
The first Kaby Lake CPU was released in August 2016. It uses a 14 nm process and was the first architecture in breaking the previous tick-tock model. Actually, it is not that different from the preceding Skylake: it has 64kB of L1 cache and 256kB L2 cache per core.
Using the multithread performance as a reference, the i7-7500U gets a score of 86.9 k points while the i7-8550U gets 166.1 k points.
Summarizing, the i7-8550U is 1.9 times faster than the i7-7500U. To get a proper comparison between both models, take a look to the data shown below.
The first Kaby Lake CPU was released in August 2016. It uses a 14 nm process and was the first architecture in breaking the previous tick-tock model. Actually, it is not that different from the preceding Skylake: it has 64kB of L1 cache and 256kB L2 cache per core.
Using the multithread performance as a reference, the i7-7500U gets a score of 86.9 k points while the i7-8550U gets 166.1 k points.
Summarizing, the i7-8550U is 1.9 times faster than the i7-7500U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
806e9
806ea
Core
Kaby Lake-U
Kaby Lake-R
Base frecuency
2.7 GHz
1.8 GHz
Boost frecuency
3.5 GHz
4 GHz
Socket
BGA1356
BGA1356
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
4096 kB
8192 kB
Date
August 2016
August 2017
Mean monothread perf.
48.67k points
64.2k points
Mean multithread perf.
86.94k points
166.12k points
Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-7500U
i7-8550U
Test#1 (Integers)
3.53k
3.91k (x1.11)
Test#2 (FP)
14.67k
15.98k (x1.09)
Test#3 (Generic, ZIP)
4.84k
5.11k (x1.06)
Test#1 (Memory)
6.26k
11.05k (x1.77)
TOTAL
29.29k
36.05k (x1.23)
Multithread
i7-7500U
i7-8550U
Test#1 (Integers)
7.26k
11.76k (x1.62)
Test#2 (FP)
35.04k
50.15k (x1.43)
Test#3 (Generic, ZIP)
11.28k
16.76k (x1.49)
Test#1 (Memory)
5.69k
4.17k (x0.73)
TOTAL
59.27k
82.84k (x1.4)
SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-7500U
i7-8550U
Test#1 (Integers)
12.93k
12.93k (x1)
Test#2 (FP)
18.63k
20.59k (x1.11)
Test#3 (Generic, ZIP)
5.03k
5.41k (x1.08)
Test#1 (Memory)
6.16k
10.48k (x1.7)
TOTAL
42.75k
49.41k (x1.16)
Multithread
i7-7500U
i7-8550U
Test#1 (Integers)
27.13k
41.11k (x1.52)
Test#2 (FP)
43.19k
65.04k (x1.51)
Test#3 (Generic, ZIP)
11.7k
17.53k (x1.5)
Test#1 (Memory)
4.99k
4.22k (x0.85)
TOTAL
87.02k
127.9k (x1.47)
AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-7500U
i7-8550U
Test#1 (Integers)
12.71k
13.15k (x1.04)
Test#2 (FP)
18.61k
19.7k (x1.06)
Test#3 (Generic, ZIP)
4.78k
5.1k (x1.07)
Test#1 (Memory)
6.63k
9.21k (x1.39)
TOTAL
42.72k
47.16k (x1.1)
Multithread
i7-7500U
i7-8550U
Test#1 (Integers)
27.27k
34.13k (x1.25)
Test#2 (FP)
44.7k
53.79k (x1.2)
Test#3 (Generic, ZIP)
11.33k
13.91k (x1.23)
Test#1 (Memory)
5.55k
4.12k (x0.74)
TOTAL
88.86k
105.95k (x1.19)
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
i7-7500U
i7-8550U
Test#1 (Integers)
20.74k
25.37k (x1.22)
Test#2 (FP)
18.41k
22.6k (x1.23)
Test#3 (Generic, ZIP)
3.98k
5.13k (x1.29)
Test#1 (Memory)
5.54k
11.1k (x2)
TOTAL
48.67k
64.2k (x1.32)
Multithread
i7-7500U
i7-8550U
Test#1 (Integers)
37.34k
72.82k (x1.95)
Test#2 (FP)
35.79k
71.71k (x2)
Test#3 (Generic, ZIP)
8.34k
17.35k (x2.08)
Test#1 (Memory)
5.48k
4.24k (x0.77)
TOTAL
86.94k
166.12k (x1.91)
Performance/W
i7-7500U
i7-8550U
Test#1 (Integers)
2489 points/W
4855 points/W
Test#2 (FP)
2386 points/W
4781 points/W
Test#3 (Generic, ZIP)
556 points/W
1157 points/W
Test#1 (Memory)
365 points/W
282 points/W
TOTAL
5796 points/W
11075 points/W
Performance/GHz
i7-7500U
i7-8550U
Test#1 (Integers)
5926 points/GHz
6343 points/GHz
Test#2 (FP)
5260 points/GHz
5650 points/GHz
Test#3 (Generic, ZIP)
1137 points/GHz
1282 points/GHz
Test#1 (Memory)
1584 points/GHz
2774 points/GHz
TOTAL
13907 points/GHz
16049 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