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Core i5-8250U vs i7-4790


Description
The i5-8250U is based on Kaby Lake architecture while the i7-4790 is based on Haswell.

Using the multithread performance as a reference, the i5-8250U gets a score of 161.3 k points while the i7-4790 gets 173.9 k points.

Summarizing, the i7-4790 is 1.1 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
306c3
Core
Kaby Lake-R
Haswell
Architecture
Base frecuency
1.6 GHz
3.6 GHz
Boost frecuency
3.4 GHz
4 GHz
Socket
BGA1356
LGA 1150
Cores/Threads
4/8
4/8
TDP
15 W
84 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
May 2014
Mean monothread perf.
54.31k points
44.73k points
Mean multithread perf.
161.26k points
173.89k 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
i7-4790
Test#1 (Integers)
3.32k
4.51k (x1.36)
Test#2 (FP)
13.5k
11.24k (x0.83)
Test#3 (Generic, ZIP)
4.11k
5.03k (x1.22)
Test#1 (Memory)
7.42k
5.02k (x0.68)
TOTAL
28.34k
25.8k (x0.91)

Multithread

i5-8250U

i7-4790
Test#1 (Integers)
13.97k
15.72k (x1.13)
Test#2 (FP)
50.8k
54.99k (x1.08)
Test#3 (Generic, ZIP)
14.71k
23.87k (x1.62)
Test#1 (Memory)
4.76k
5.48k (x1.15)
TOTAL
84.24k
100.06k (x1.19)

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
i7-4790
Test#1 (Integers)
12.41k
13.52k (x1.09)
Test#2 (FP)
18.11k
11.94k (x0.66)
Test#3 (Generic, ZIP)
4.79k
4.96k (x1.04)
Test#1 (Memory)
8.16k
4.84k (x0.59)
TOTAL
43.46k
35.25k (x0.81)

Multithread

i5-8250U

i7-4790
Test#1 (Integers)
42.48k
54.7k (x1.29)
Test#2 (FP)
60.2k
52.41k (x0.87)
Test#3 (Generic, ZIP)
14.85k
24.5k (x1.65)
Test#1 (Memory)
4.77k
6.77k (x1.42)
TOTAL
122.3k
138.37k (x1.13)

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
i7-4790
Test#1 (Integers)
12.59k
14.07k (x1.12)
Test#2 (FP)
18.89k
12.63k (x0.67)
Test#3 (Generic, ZIP)
4.65k
5.35k (x1.15)
Test#1 (Memory)
8.2k
4.98k (x0.61)
TOTAL
44.32k
37.03k (x0.84)

Multithread

i5-8250U

i7-4790
Test#1 (Integers)
45.91k
57.88k (x1.26)
Test#2 (FP)
69.55k
60.83k (x0.87)
Test#3 (Generic, ZIP)
16.79k
24.4k (x1.45)
Test#1 (Memory)
4.83k
6.95k (x1.44)
TOTAL
137.09k
150.07k (x1.09)

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
i7-4790
Test#1 (Integers)
22.11k
22.19k (x1)
Test#2 (FP)
19.64k
12.45k (x0.63)
Test#3 (Generic, ZIP)
4.54k
5.11k (x1.13)
Test#1 (Memory)
8.03k
4.98k (x0.62)
TOTAL
54.31k
44.73k (x0.82)

Multithread

i5-8250U

i7-4790
Test#1 (Integers)
74.19k
87.14k (x1.17)
Test#2 (FP)
66.27k
58k (x0.88)
Test#3 (Generic, ZIP)
15.97k
22.75k (x1.42)
Test#1 (Memory)
4.83k
6k (x1.24)
TOTAL
161.26k
173.89k (x1.08)

Performance/W
i5-8250U
i7-4790
Test#1 (Integers)
4946 points/W
1037 points/W
Test#2 (FP)
4418 points/W
691 points/W
Test#3 (Generic, ZIP)
1065 points/W
271 points/W
Test#1 (Memory)
322 points/W
71 points/W
TOTAL
10751 points/W
2070 points/W

Performance/GHz
i5-8250U
i7-4790
Test#1 (Integers)
6503 points/GHz
5547 points/GHz
Test#2 (FP)
5777 points/GHz
3113 points/GHz
Test#3 (Generic, ZIP)
1334 points/GHz
1279 points/GHz
Test#1 (Memory)
2361 points/GHz
1244 points/GHz
TOTAL
15975 points/GHz
11183 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