Core i7-8550U vs i5-8250U
Description
Both models i7-8550U and i5-8250U 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 i5-8250U gets 161.3 k points.
Summarizing, the i7-8550U is 1 times faster than the i5-8250U. 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 i5-8250U gets 161.3 k points.
Summarizing, the i7-8550U is 1 times faster than the i5-8250U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
806ea
806ea
Core
Kaby Lake-R
Kaby Lake-R
Base frecuency
1.8 GHz
1.6 GHz
Boost frecuency
4 GHz
3.4 GHz
Socket
BGA1356
BGA1356
Cores/Threads
4/8
4/8
TDP
15 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
August 2017
August 2017
Mean monothread perf.
64.2k points
54.31k points
Mean multithread perf.
166.12k points
161.26k 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
i5-8250U
Test#1 (Integers)
3.91k
3.32k (x0.85)
Test#2 (FP)
15.98k
13.5k (x0.84)
Test#3 (Generic, ZIP)
5.11k
4.11k (x0.8)
Test#1 (Memory)
11.05k
7.42k (x0.67)
TOTAL
36.05k
28.34k (x0.79)
Multithread
i7-8550U
i5-8250U
Test#1 (Integers)
11.76k
13.97k (x1.19)
Test#2 (FP)
50.15k
50.8k (x1.01)
Test#3 (Generic, ZIP)
16.76k
14.71k (x0.88)
Test#1 (Memory)
4.17k
4.76k (x1.14)
TOTAL
82.84k
84.24k (x1.02)
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
i5-8250U
Test#1 (Integers)
12.93k
12.41k (x0.96)
Test#2 (FP)
20.59k
18.11k (x0.88)
Test#3 (Generic, ZIP)
5.41k
4.79k (x0.88)
Test#1 (Memory)
10.48k
8.16k (x0.78)
TOTAL
49.41k
43.46k (x0.88)
Multithread
i7-8550U
i5-8250U
Test#1 (Integers)
41.11k
42.48k (x1.03)
Test#2 (FP)
65.04k
60.2k (x0.93)
Test#3 (Generic, ZIP)
17.53k
14.85k (x0.85)
Test#1 (Memory)
4.22k
4.77k (x1.13)
TOTAL
127.9k
122.3k (x0.96)
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
i5-8250U
Test#1 (Integers)
13.15k
12.59k (x0.96)
Test#2 (FP)
19.7k
18.89k (x0.96)
Test#3 (Generic, ZIP)
5.1k
4.65k (x0.91)
Test#1 (Memory)
9.21k
8.2k (x0.89)
TOTAL
47.16k
44.32k (x0.94)
Multithread
i7-8550U
i5-8250U
Test#1 (Integers)
34.13k
45.91k (x1.35)
Test#2 (FP)
53.79k
69.55k (x1.29)
Test#3 (Generic, ZIP)
13.91k
16.79k (x1.21)
Test#1 (Memory)
4.12k
4.83k (x1.17)
TOTAL
105.95k
137.09k (x1.29)
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
i5-8250U
Test#1 (Integers)
25.37k
22.11k (x0.87)
Test#2 (FP)
22.6k
19.64k (x0.87)
Test#3 (Generic, ZIP)
5.13k
4.54k (x0.88)
Test#1 (Memory)
11.1k
8.03k (x0.72)
TOTAL
64.2k
54.31k (x0.85)
Multithread
i7-8550U
i5-8250U
Test#1 (Integers)
72.82k
74.19k (x1.02)
Test#2 (FP)
71.71k
66.27k (x0.92)
Test#3 (Generic, ZIP)
17.35k
15.97k (x0.92)
Test#1 (Memory)
4.24k
4.83k (x1.14)
TOTAL
166.12k
161.26k (x0.97)
Performance/W
i7-8550U
i5-8250U
Test#1 (Integers)
4855 points/W
4946 points/W
Test#2 (FP)
4781 points/W
4418 points/W
Test#3 (Generic, ZIP)
1157 points/W
1065 points/W
Test#1 (Memory)
282 points/W
322 points/W
TOTAL
11075 points/W
10751 points/W
Performance/GHz
i7-8550U
i5-8250U
Test#1 (Integers)
6343 points/GHz
6503 points/GHz
Test#2 (FP)
5650 points/GHz
5777 points/GHz
Test#3 (Generic, ZIP)
1282 points/GHz
1334 points/GHz
Test#1 (Memory)
2774 points/GHz
2361 points/GHz
TOTAL
16049 points/GHz
15975 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