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Core i3-7100U vs i7-4790


Description
The i3-7100U is based on Kaby Lake architecture while the i7-4790 is based on Haswell.

Using the multithread performance as a reference, the i3-7100U gets a score of 79.6 k points while the i7-4790 gets 173.9 k points.

Summarizing, the i7-4790 is 2.2 times faster than the i3-7100U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806e9
306c3
Core
Kaby Lake-U
Haswell
Architecture
Base frecuency
2.4 GHz
3.6 GHz
Boost frecuency
2.4 GHz
4 GHz
Socket
BGA 1356
LGA 1150
Cores/Threads
2/4
4/8
TDP
15 W
84 W
Cache L1 (d+i)
2x32+2x32 kB
32+32 kB
Cache L2
2x256 kB
256 kB
Cache L3
3072 kB
8192 kB
Date
August 2016
May 2014
Mean monothread perf.
33.38k points
44.73k points
Mean multithread perf.
79.6k 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
i3-7100U
i7-4790
Test#1 (Integers)
2.41k
4.51k (x1.88)
Test#2 (FP)
9.77k
11.24k (x1.15)
Test#3 (Generic, ZIP)
3.13k
5.03k (x1.61)
Test#1 (Memory)
3.55k
5.02k (x1.41)
TOTAL
18.86k
25.8k (x1.37)

Multithread

i3-7100U

i7-4790
Test#1 (Integers)
5k
15.72k (x3.15)
Test#2 (FP)
21.48k
54.99k (x2.56)
Test#3 (Generic, ZIP)
7.39k
23.87k (x3.23)
Test#1 (Memory)
3.18k
5.48k (x1.72)
TOTAL
37.05k
100.06k (x2.7)

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
i3-7100U
i7-4790
Test#1 (Integers)
8.66k
13.52k (x1.56)
Test#2 (FP)
12.31k
11.94k (x0.97)
Test#3 (Generic, ZIP)
3.28k
4.96k (x1.51)
Test#1 (Memory)
3.92k
4.84k (x1.23)
TOTAL
28.16k
35.25k (x1.25)

Multithread

i3-7100U

i7-4790
Test#1 (Integers)
17.87k
54.7k (x3.06)
Test#2 (FP)
28.59k
52.41k (x1.83)
Test#3 (Generic, ZIP)
7.68k
24.5k (x3.19)
Test#1 (Memory)
3.15k
6.77k (x2.15)
TOTAL
57.28k
138.37k (x2.42)

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
i3-7100U
i7-4790
Test#1 (Integers)
8.76k
14.07k (x1.61)
Test#2 (FP)
13.49k
12.63k (x0.94)
Test#3 (Generic, ZIP)
3.21k
5.35k (x1.67)
Test#1 (Memory)
3.9k
4.98k (x1.28)
TOTAL
29.36k
37.03k (x1.26)

Multithread

i3-7100U

i7-4790
Test#1 (Integers)
18.33k
57.88k (x3.16)
Test#2 (FP)
31.08k
60.83k (x1.96)
Test#3 (Generic, ZIP)
7.5k
24.4k (x3.25)
Test#1 (Memory)
3.61k
6.95k (x1.93)
TOTAL
60.52k
150.07k (x2.48)

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
i3-7100U
i7-4790
Test#1 (Integers)
13.46k
22.19k (x1.65)
Test#2 (FP)
13.45k
12.45k (x0.93)
Test#3 (Generic, ZIP)
3.08k
5.11k (x1.66)
Test#1 (Memory)
3.4k
4.98k (x1.47)
TOTAL
33.38k
44.73k (x1.34)

Multithread

i3-7100U

i7-4790
Test#1 (Integers)
34.95k
87.14k (x2.49)
Test#2 (FP)
33.53k
58k (x1.73)
Test#3 (Generic, ZIP)
7.74k
22.75k (x2.94)
Test#1 (Memory)
3.38k
6k (x1.78)
TOTAL
79.6k
173.89k (x2.18)

Performance/W
i3-7100U
i7-4790
Test#1 (Integers)
2330 points/W
1037 points/W
Test#2 (FP)
2235 points/W
691 points/W
Test#3 (Generic, ZIP)
516 points/W
271 points/W
Test#1 (Memory)
225 points/W
71 points/W
TOTAL
5307 points/W
2070 points/W

Performance/GHz
i3-7100U
i7-4790
Test#1 (Integers)
5606 points/GHz
5547 points/GHz
Test#2 (FP)
5606 points/GHz
3113 points/GHz
Test#3 (Generic, ZIP)
1282 points/GHz
1279 points/GHz
Test#1 (Memory)
1415 points/GHz
1244 points/GHz
TOTAL
13909 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