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Core i5-8250U vs i7-7700


Description
Both models i5-8250U and i7-7700 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 i7-7700 gets 257.5 k points.

Summarizing, the i7-7700 is 1.6 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
906e9
Core
Kaby Lake-R
Kaby Lake-S
Architecture
Base frecuency
1.6 GHz
3.6 GHz
Boost frecuency
3.4 GHz
4.2 GHz
Socket
BGA1356
LGA 1151
Cores/Threads
4/8
4/8
TDP
15 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
8192 kB
Date
August 2017
September 2016
Mean monothread perf.
54.31k points
67.33k points
Mean multithread perf.
161.26k points
257.52k 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
i7-7700
Test#1 (Integers)
3.32k
4.23k (x1.27)
Test#2 (FP)
13.5k
16.76k (x1.24)
Test#3 (Generic, ZIP)
4.11k
5.42k (x1.32)
Test#1 (Memory)
7.42k
12.23k (x1.65)
TOTAL
28.34k
38.64k (x1.36)

Multithread

i5-8250U

i7-7700
Test#1 (Integers)
13.97k
16.71k (x1.2)
Test#2 (FP)
50.8k
73.1k (x1.44)
Test#3 (Generic, ZIP)
14.71k
25.76k (x1.75)
Test#1 (Memory)
4.76k
7.12k (x1.49)
TOTAL
84.24k
122.68k (x1.46)

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
i7-7700
Test#1 (Integers)
12.41k
15.33k (x1.24)
Test#2 (FP)
18.11k
21.94k (x1.21)
Test#3 (Generic, ZIP)
4.79k
5.85k (x1.22)
Test#1 (Memory)
8.16k
12.52k (x1.54)
TOTAL
43.46k
55.64k (x1.28)

Multithread

i5-8250U

i7-7700
Test#1 (Integers)
42.48k
61.73k (x1.45)
Test#2 (FP)
60.2k
99.91k (x1.66)
Test#3 (Generic, ZIP)
14.85k
27.03k (x1.82)
Test#1 (Memory)
4.77k
9.28k (x1.95)
TOTAL
122.3k
197.96k (x1.62)

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
i7-7700
Test#1 (Integers)
12.59k
15.34k (x1.22)
Test#2 (FP)
18.89k
23.41k (x1.24)
Test#3 (Generic, ZIP)
4.65k
5.87k (x1.26)
Test#1 (Memory)
8.2k
11.07k (x1.35)
TOTAL
44.32k
55.69k (x1.26)

Multithread

i5-8250U

i7-7700
Test#1 (Integers)
45.91k
62.68k (x1.37)
Test#2 (FP)
69.55k
105.24k (x1.51)
Test#3 (Generic, ZIP)
16.79k
26.35k (x1.57)
Test#1 (Memory)
4.83k
5.79k (x1.2)
TOTAL
137.09k
200.07k (x1.46)

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
i7-7700
Test#1 (Integers)
22.11k
26.7k (x1.21)
Test#2 (FP)
19.64k
23.7k (x1.21)
Test#3 (Generic, ZIP)
4.54k
5.46k (x1.2)
Test#1 (Memory)
8.03k
11.48k (x1.43)
TOTAL
54.31k
67.33k (x1.24)

Multithread

i5-8250U

i7-7700
Test#1 (Integers)
74.19k
115.97k (x1.56)
Test#2 (FP)
66.27k
108.43k (x1.64)
Test#3 (Generic, ZIP)
15.97k
26.28k (x1.65)
Test#1 (Memory)
4.83k
6.85k (x1.42)
TOTAL
161.26k
257.52k (x1.6)

Performance/W
i5-8250U
i7-7700
Test#1 (Integers)
4946 points/W
1784 points/W
Test#2 (FP)
4418 points/W
1668 points/W
Test#3 (Generic, ZIP)
1065 points/W
404 points/W
Test#1 (Memory)
322 points/W
105 points/W
TOTAL
10751 points/W
3962 points/W

Performance/GHz
i5-8250U
i7-7700
Test#1 (Integers)
6503 points/GHz
6356 points/GHz
Test#2 (FP)
5777 points/GHz
5643 points/GHz
Test#3 (Generic, ZIP)
1334 points/GHz
1300 points/GHz
Test#1 (Memory)
2361 points/GHz
2733 points/GHz
TOTAL
15975 points/GHz
16032 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.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

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.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4