Core i5-8250U vs i7-8550U
Description
Both models i5-8250U 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 i5-8250U gets a score of 161.3 k points while the i7-8550U gets 166.1 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 i5-8250U gets a score of 161.3 k points while the i7-8550U gets 166.1 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
1.6 GHz
1.8 GHz
Boost frecuency
3.4 GHz
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
6144 kB
8192 kB
Date
August 2017
August 2017
Mean monothread perf.
54.31k points
64.2k points
Mean multithread perf.
161.26k 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
i5-8250U
i7-8550U
Test#1 (Integers)
3.32k
3.91k (x1.18)
Test#2 (FP)
13.5k
15.98k (x1.18)
Test#3 (Generic, ZIP)
4.11k
5.11k (x1.25)
Test#1 (Memory)
7.42k
11.05k (x1.49)
TOTAL
28.34k
36.05k (x1.27)
Multithread
i5-8250U
i7-8550U
Test#1 (Integers)
13.97k
11.76k (x0.84)
Test#2 (FP)
50.8k
50.15k (x0.99)
Test#3 (Generic, ZIP)
14.71k
16.76k (x1.14)
Test#1 (Memory)
4.76k
4.17k (x0.87)
TOTAL
84.24k
82.84k (x0.98)
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
i5-8250U
i7-8550U
Test#1 (Integers)
12.41k
12.93k (x1.04)
Test#2 (FP)
18.11k
20.59k (x1.14)
Test#3 (Generic, ZIP)
4.79k
5.41k (x1.13)
Test#1 (Memory)
8.16k
10.48k (x1.28)
TOTAL
43.46k
49.41k (x1.14)
Multithread
i5-8250U
i7-8550U
Test#1 (Integers)
42.48k
41.11k (x0.97)
Test#2 (FP)
60.2k
65.04k (x1.08)
Test#3 (Generic, ZIP)
14.85k
17.53k (x1.18)
Test#1 (Memory)
4.77k
4.22k (x0.89)
TOTAL
122.3k
127.9k (x1.05)
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
i5-8250U
i7-8550U
Test#1 (Integers)
12.59k
13.15k (x1.04)
Test#2 (FP)
18.89k
19.7k (x1.04)
Test#3 (Generic, ZIP)
4.65k
5.1k (x1.1)
Test#1 (Memory)
8.2k
9.21k (x1.12)
TOTAL
44.32k
47.16k (x1.06)
Multithread
i5-8250U
i7-8550U
Test#1 (Integers)
45.91k
34.13k (x0.74)
Test#2 (FP)
69.55k
53.79k (x0.77)
Test#3 (Generic, ZIP)
16.79k
13.91k (x0.83)
Test#1 (Memory)
4.83k
4.12k (x0.85)
TOTAL
137.09k
105.95k (x0.77)
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
i5-8250U
i7-8550U
Test#1 (Integers)
22.11k
25.37k (x1.15)
Test#2 (FP)
19.64k
22.6k (x1.15)
Test#3 (Generic, ZIP)
4.54k
5.13k (x1.13)
Test#1 (Memory)
8.03k
11.1k (x1.38)
TOTAL
54.31k
64.2k (x1.18)
Multithread
i5-8250U
i7-8550U
Test#1 (Integers)
74.19k
72.82k (x0.98)
Test#2 (FP)
66.27k
71.71k (x1.08)
Test#3 (Generic, ZIP)
15.97k
17.35k (x1.09)
Test#1 (Memory)
4.83k
4.24k (x0.88)
TOTAL
161.26k
166.12k (x1.03)
Performance/W
i5-8250U
i7-8550U
Test#1 (Integers)
4946 points/W
4855 points/W
Test#2 (FP)
4418 points/W
4781 points/W
Test#3 (Generic, ZIP)
1065 points/W
1157 points/W
Test#1 (Memory)
322 points/W
282 points/W
TOTAL
10751 points/W
11075 points/W
Performance/GHz
i5-8250U
i7-8550U
Test#1 (Integers)
6503 points/GHz
6343 points/GHz
Test#2 (FP)
5777 points/GHz
5650 points/GHz
Test#3 (Generic, ZIP)
1334 points/GHz
1282 points/GHz
Test#1 (Memory)
2361 points/GHz
2774 points/GHz
TOTAL
15975 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