Core i7-8550U vs i7-7500U
Description
Both models i7-8550U and i7-7500U 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 i7-8550U gets a score of 166.1 k points while the i7-7500U gets 86.9 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 i7-8550U gets a score of 166.1 k points while the i7-7500U gets 86.9 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
806ea
806e9
Core
Kaby Lake-R
Kaby Lake-U
Base frecuency
1.8 GHz
2.7 GHz
Boost frecuency
4 GHz
3.5 GHz
Socket
BGA1356
BGA1356
Cores/Threads
4/8
2/4
TDP
15 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
8192 kB
4096 kB
Date
August 2017
August 2016
Mean monothread perf.
64.2k points
48.67k points
Mean multithread perf.
166.12k points
86.94k 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
i7-8550U
i7-7500U
Test#1 (Integers)
3.91k
3.53k (x0.9)
Test#2 (FP)
15.98k
14.67k (x0.92)
Test#3 (Generic, ZIP)
5.11k
4.84k (x0.95)
Test#1 (Memory)
11.05k
6.26k (x0.57)
TOTAL
36.05k
29.29k (x0.81)
Multithread
i7-8550U
i7-7500U
Test#1 (Integers)
11.76k
7.26k (x0.62)
Test#2 (FP)
50.15k
35.04k (x0.7)
Test#3 (Generic, ZIP)
16.76k
11.28k (x0.67)
Test#1 (Memory)
4.17k
5.69k (x1.37)
TOTAL
82.84k
59.27k (x0.72)
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
i7-8550U
i7-7500U
Test#1 (Integers)
12.93k
12.93k (x1)
Test#2 (FP)
20.59k
18.63k (x0.9)
Test#3 (Generic, ZIP)
5.41k
5.03k (x0.93)
Test#1 (Memory)
10.48k
6.16k (x0.59)
TOTAL
49.41k
42.75k (x0.87)
Multithread
i7-8550U
i7-7500U
Test#1 (Integers)
41.11k
27.13k (x0.66)
Test#2 (FP)
65.04k
43.19k (x0.66)
Test#3 (Generic, ZIP)
17.53k
11.7k (x0.67)
Test#1 (Memory)
4.22k
4.99k (x1.18)
TOTAL
127.9k
87.02k (x0.68)
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
i7-8550U
i7-7500U
Test#1 (Integers)
13.15k
12.71k (x0.97)
Test#2 (FP)
19.7k
18.61k (x0.94)
Test#3 (Generic, ZIP)
5.1k
4.78k (x0.94)
Test#1 (Memory)
9.21k
6.63k (x0.72)
TOTAL
47.16k
42.72k (x0.91)
Multithread
i7-8550U
i7-7500U
Test#1 (Integers)
34.13k
27.27k (x0.8)
Test#2 (FP)
53.79k
44.7k (x0.83)
Test#3 (Generic, ZIP)
13.91k
11.33k (x0.81)
Test#1 (Memory)
4.12k
5.55k (x1.35)
TOTAL
105.95k
88.86k (x0.84)
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
i7-8550U
i7-7500U
Test#1 (Integers)
25.37k
20.74k (x0.82)
Test#2 (FP)
22.6k
18.41k (x0.81)
Test#3 (Generic, ZIP)
5.13k
3.98k (x0.78)
Test#1 (Memory)
11.1k
5.54k (x0.5)
TOTAL
64.2k
48.67k (x0.76)
Multithread
i7-8550U
i7-7500U
Test#1 (Integers)
72.82k
37.34k (x0.51)
Test#2 (FP)
71.71k
35.79k (x0.5)
Test#3 (Generic, ZIP)
17.35k
8.34k (x0.48)
Test#1 (Memory)
4.24k
5.48k (x1.29)
TOTAL
166.12k
86.94k (x0.52)
Performance/W
i7-8550U
i7-7500U
Test#1 (Integers)
4855 points/W
2489 points/W
Test#2 (FP)
4781 points/W
2386 points/W
Test#3 (Generic, ZIP)
1157 points/W
556 points/W
Test#1 (Memory)
282 points/W
365 points/W
TOTAL
11075 points/W
5796 points/W
Performance/GHz
i7-8550U
i7-7500U
Test#1 (Integers)
6343 points/GHz
5926 points/GHz
Test#2 (FP)
5650 points/GHz
5260 points/GHz
Test#3 (Generic, ZIP)
1282 points/GHz
1137 points/GHz
Test#1 (Memory)
2774 points/GHz
1584 points/GHz
TOTAL
16049 points/GHz
13907 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