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Core i7-7020U vs i5-2400


Description
The i7-7020U is based on Kaby Lake architecture while the i5-2400 is based on Sandy Bridge.

Using the multithread performance as a reference, the i7-7020U gets a score of 60.1 k points while the i5-2400 gets 84.4 k points.

Summarizing, the i5-2400 is 1.4 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
206a7
Core
Kaby Lake-U
Sandy Bridge
Architecture
Base frecuency
2.3 GHz
3.1 GHz
Boost frecuency
2.3 GHz
3.4 GHz
Socket
BGA 1356
LGA 1155
Cores/Threads
2/4
4/4
TDP
15 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+x4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
3072 kB
6144 kB
Date
April 2018
January 2011
Mean monothread perf.
33.63k points
25.49k points
Mean multithread perf.
73.15k points
84.36k 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
i5-2400
Test#1 (Integers)
2.3k
2.72k (x1.19)
Test#2 (FP)
8.36k
7.6k (x0.91)
Test#3 (Generic, ZIP)
2.75k
3.98k (x1.45)
Test#1 (Memory)
4.64k
4.47k (x0.96)
TOTAL
18.04k
18.78k (x1.04)

Multithread

i7-7020U

i5-2400
Test#1 (Integers)
4.74k
10.37k (x2.18)
Test#2 (FP)
17.96k
28.84k (x1.61)
Test#3 (Generic, ZIP)
6.95k
15.08k (x2.17)
Test#1 (Memory)
4.95k
4.67k (x0.94)
TOTAL
34.61k
58.95k (x1.7)

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
i5-2400
Test#1 (Integers)
8.17k
9.16k (x1.12)
Test#2 (FP)
12.42k
8.2k (x0.66)
Test#3 (Generic, ZIP)
2.87k
3.95k (x1.38)
Test#1 (Memory)
4.68k
4.17k (x0.89)
TOTAL
28.13k
25.49k (x0.91)

Multithread

i7-7020U

i5-2400
Test#1 (Integers)
17.65k
34.74k (x1.97)
Test#2 (FP)
30.44k
31.07k (x1.02)
Test#3 (Generic, ZIP)
7.19k
14.86k (x2.07)
Test#1 (Memory)
4.79k
3.69k (x0.77)
TOTAL
60.07k
84.36k (x1.4)

Performance/W
i7-7020U
i5-2400
Test#1 (Integers)
1177 points/W
366 points/W
Test#2 (FP)
2029 points/W
327 points/W
Test#3 (Generic, ZIP)
479 points/W
156 points/W
Test#1 (Memory)
320 points/W
39 points/W
TOTAL
4005 points/W
888 points/W

Performance/GHz
i7-7020U
i5-2400
Test#1 (Integers)
3550 points/GHz
2695 points/GHz
Test#2 (FP)
5399 points/GHz
2411 points/GHz
Test#3 (Generic, ZIP)
1247 points/GHz
1163 points/GHz
Test#1 (Memory)
2035 points/GHz
1228 points/GHz
TOTAL
12231 points/GHz
7497 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