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Core i7-7020U vs i5-3470


Description
The i7-7020U is based on Kaby Lake architecture while the i5-3470 is based on Ivy Bridge.

Using the multithread performance as a reference, the i7-7020U gets a score of 60.1 k points while the i5-3470 gets 94.1 k points.

Summarizing, the i5-3470 is 1.6 times faster than the i7-7020U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ea
306a9
Core
Kaby Lake-U
Ivy Bridge
Architecture
Base frecuency
2.3 GHz
3.2 GHz
Boost frecuency
2.3 GHz
3.6 GHz
Socket
BGA 1356
LGA 1155
Cores/Threads
2/4
4/4
TDP
15 W
77 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
3072 kB
6144 kB
Date
April 2018
June 2012
Mean monothread perf.
33.63k points
31.71k points
Mean multithread perf.
73.15k points
94.15k 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
i7-7020U
i5-3470
Test#1 (Integers)
2.3k
3.62k (x1.58)
Test#2 (FP)
8.36k
10.08k (x1.21)
Test#3 (Generic, ZIP)
2.75k
4.47k (x1.62)
Test#1 (Memory)
4.64k
5.39k (x1.16)
TOTAL
18.04k
23.56k (x1.31)

Multithread

i7-7020U

i5-3470
Test#1 (Integers)
4.74k
13.66k (x2.88)
Test#2 (FP)
17.96k
37.73k (x2.1)
Test#3 (Generic, ZIP)
6.95k
17.07k (x2.46)
Test#1 (Memory)
4.95k
8.57k (x1.73)
TOTAL
34.61k
77.04k (x2.23)

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
i7-7020U
i5-3470
Test#1 (Integers)
8.18k
12.26k (x1.5)
Test#2 (FP)
11.67k
11k (x0.94)
Test#3 (Generic, ZIP)
2.97k
4.76k (x1.6)
Test#1 (Memory)
4.68k
5.39k (x1.15)
TOTAL
27.5k
33.42k (x1.22)

Multithread

i7-7020U

i5-3470
Test#1 (Integers)
17.51k
46.54k (x2.66)
Test#2 (FP)
27.61k
41.4k (x1.5)
Test#3 (Generic, ZIP)
7.39k
18.09k (x2.45)
Test#1 (Memory)
4.78k
8.69k (x1.82)
TOTAL
57.3k
114.73k (x2)

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
i7-7020U
i5-3470
Test#1 (Integers)
8.17k
11.51k (x1.41)
Test#2 (FP)
12.42k
11.12k (x0.9)
Test#3 (Generic, ZIP)
2.87k
4.44k (x1.55)
Test#1 (Memory)
4.68k
4.64k (x0.99)
TOTAL
28.13k
31.71k (x1.13)

Multithread

i7-7020U

i5-3470
Test#1 (Integers)
17.65k
37.93k (x2.15)
Test#2 (FP)
30.44k
36.37k (x1.19)
Test#3 (Generic, ZIP)
7.19k
14.14k (x1.97)
Test#1 (Memory)
4.79k
5.71k (x1.19)
TOTAL
60.07k
94.15k (x1.57)

Performance/W
i7-7020U
i5-3470
Test#1 (Integers)
1177 points/W
493 points/W
Test#2 (FP)
2029 points/W
472 points/W
Test#3 (Generic, ZIP)
479 points/W
184 points/W
Test#1 (Memory)
320 points/W
74 points/W
TOTAL
4005 points/W
1223 points/W

Performance/GHz
i7-7020U
i5-3470
Test#1 (Integers)
3550 points/GHz
3196 points/GHz
Test#2 (FP)
5399 points/GHz
3090 points/GHz
Test#3 (Generic, ZIP)
1247 points/GHz
1234 points/GHz
Test#1 (Memory)
2035 points/GHz
1289 points/GHz
TOTAL
12231 points/GHz
8809 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