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Core i5-2500K vs i7-7020U


Description
The i5-2500K is based on Sandy Bridge architecture while the i7-7020U is based on Kaby Lake.

Using the multithread performance as a reference, the i5-2500K gets a score of 111.8 k points while the i7-7020U gets 60.1 k points.

Summarizing, the i5-2500K is 1.9 times faster than the i7-7020U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206a7
806ea
Core
Sandy Bridge
Kaby Lake-U
Architecture
Base frecuency
3.3 GHz
2.3 GHz
Boost frecuency
3.7 GHz
2.3 GHz
Socket
LGA 1155
BGA 1356
Cores/Threads
4/4
2/4
TDP
95 W
15 W
Cache L1 (d+i)
4x32+x4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
6144 kB
3072 kB
Date
January 2011
April 2018
Mean monothread perf.
32.85k points
33.63k points
Mean multithread perf.
111.83k points
73.15k points

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
i5-2500K
i7-7020U
Test#1 (Integers)
11.84k
8.17k (x0.69)
Test#2 (FP)
10.43k
12.42k (x1.19)
Test#3 (Generic, ZIP)
5.22k
2.87k (x0.55)
Test#1 (Memory)
5.36k
4.68k (x0.87)
TOTAL
32.85k
28.13k (x0.86)

Multithread

i5-2500K

i7-7020U
Test#1 (Integers)
45.51k
17.65k (x0.39)
Test#2 (FP)
40.83k
30.44k (x0.75)
Test#3 (Generic, ZIP)
20.7k
7.19k (x0.35)
Test#1 (Memory)
4.79k
4.79k (x1)
TOTAL
111.83k
60.07k (x0.54)

Performance/W
i5-2500K
i7-7020U
Test#1 (Integers)
479 points/W
1177 points/W
Test#2 (FP)
430 points/W
2029 points/W
Test#3 (Generic, ZIP)
218 points/W
479 points/W
Test#1 (Memory)
50 points/W
320 points/W
TOTAL
1177 points/W
4005 points/W

Performance/GHz
i5-2500K
i7-7020U
Test#1 (Integers)
3200 points/GHz
3550 points/GHz
Test#2 (FP)
2818 points/GHz
5399 points/GHz
Test#3 (Generic, ZIP)
1411 points/GHz
1247 points/GHz
Test#1 (Memory)
1449 points/GHz
2035 points/GHz
TOTAL
8878 points/GHz
12231 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