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Core i5-7300HQ vs i5-8250U


Description
Both models i5-7300HQ 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 i5-7300HQ gets a score of 168.8 k points while the i5-8250U gets 161.3 k points.

Summarizing, the i5-7300HQ 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
906e9
806ea
Core
Kaby Lake-H
Kaby Lake-R
Architecture
Base frecuency
2.5 GHz
1.6 GHz
Boost frecuency
3.5 GHz
3.4 GHz
Socket
BGA1440
BGA1356
Cores/Threads
4/4
4/8
TDP
45 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
6144 kB
Date
January 2017
August 2017
Mean monothread perf.
53.51k points
54.31k points
Mean multithread perf.
168.81k 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
i5-7300HQ
i5-8250U
Test#1 (Integers)
3.41k
3.32k (x0.97)
Test#2 (FP)
14.14k
13.5k (x0.95)
Test#3 (Generic, ZIP)
4.41k
4.11k (x0.93)
Test#1 (Memory)
8.87k
7.42k (x0.84)
TOTAL
30.83k
28.34k (x0.92)

Multithread

i5-7300HQ

i5-8250U
Test#1 (Integers)
12.75k
13.97k (x1.1)
Test#2 (FP)
52.88k
50.8k (x0.96)
Test#3 (Generic, ZIP)
16.25k
14.71k (x0.91)
Test#1 (Memory)
8.98k
4.76k (x0.53)
TOTAL
90.85k
84.24k (x0.93)

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
i5-7300HQ
i5-8250U
Test#1 (Integers)
11.71k
12.41k (x1.06)
Test#2 (FP)
16.74k
18.11k (x1.08)
Test#3 (Generic, ZIP)
4.27k
4.79k (x1.12)
Test#1 (Memory)
7.81k
8.16k (x1.04)
TOTAL
40.53k
43.46k (x1.07)

Multithread

i5-7300HQ

i5-8250U
Test#1 (Integers)
44.38k
42.48k (x0.96)
Test#2 (FP)
62.55k
60.2k (x0.96)
Test#3 (Generic, ZIP)
15.6k
14.85k (x0.95)
Test#1 (Memory)
7.85k
4.77k (x0.61)
TOTAL
130.38k
122.3k (x0.94)

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
i5-7300HQ
i5-8250U
Test#1 (Integers)
11.59k
12.59k (x1.09)
Test#2 (FP)
17.89k
18.89k (x1.06)
Test#3 (Generic, ZIP)
4.14k
4.65k (x1.12)
Test#1 (Memory)
7.88k
8.2k (x1.04)
TOTAL
41.5k
44.32k (x1.07)

Multithread

i5-7300HQ

i5-8250U
Test#1 (Integers)
44.42k
45.91k (x1.03)
Test#2 (FP)
67.5k
69.55k (x1.03)
Test#3 (Generic, ZIP)
14.6k
16.79k (x1.15)
Test#1 (Memory)
8.06k
4.83k (x0.6)
TOTAL
134.58k
137.09k (x1.02)

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
i5-7300HQ
i5-8250U
Test#1 (Integers)
21.65k
22.11k (x1.02)
Test#2 (FP)
19.18k
19.64k (x1.02)
Test#3 (Generic, ZIP)
4.38k
4.54k (x1.04)
Test#1 (Memory)
8.3k
8.03k (x0.97)
TOTAL
53.51k
54.31k (x1.01)

Multithread

i5-7300HQ

i5-8250U
Test#1 (Integers)
77.12k
74.19k (x0.96)
Test#2 (FP)
68.68k
66.27k (x0.96)
Test#3 (Generic, ZIP)
15.24k
15.97k (x1.05)
Test#1 (Memory)
7.78k
4.83k (x0.62)
TOTAL
168.81k
161.26k (x0.96)

Performance/W
i5-7300HQ
i5-8250U
Test#1 (Integers)
1714 points/W
4946 points/W
Test#2 (FP)
1526 points/W
4418 points/W
Test#3 (Generic, ZIP)
339 points/W
1065 points/W
Test#1 (Memory)
173 points/W
322 points/W
TOTAL
3751 points/W
10751 points/W

Performance/GHz
i5-7300HQ
i5-8250U
Test#1 (Integers)
6186 points/GHz
6503 points/GHz
Test#2 (FP)
5480 points/GHz
5777 points/GHz
Test#3 (Generic, ZIP)
1251 points/GHz
1334 points/GHz
Test#1 (Memory)
2372 points/GHz
2361 points/GHz
TOTAL
15289 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.


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