| | | | | | |

Core i7-6500U vs i5-2500K


Description
The i7-6500U is based on Skylake architecture while the i5-2500K is based on Sandy Bridge.

Using the multithread performance as a reference, the i7-6500U gets a score of 78.7 k points while the i5-2500K gets 111.8 k points.

Summarizing, the i5-2500K is 1.4 times faster than the i7-6500U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
206a7
Core
Skylake-U
Sandy Bridge
Architecture
Base frecuency
2.5 GHz
3.3 GHz
Boost frecuency
3.1 GHz
3.7 GHz
Socket
BGA1356
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
4096 kB
4x256 kB
Cache L3
kB
6144 kB
Date
September 2015
January 2011
Mean monothread perf.
46.25k points
32.85k points
Mean multithread perf.
97.52k points
111.83k 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
i7-6500U
i5-2500K
Test#1 (Integers)
11.09k
11.84k (x1.07)
Test#2 (FP)
17.1k
10.43k (x0.61)
Test#3 (Generic, ZIP)
4.12k
5.22k (x1.27)
Test#1 (Memory)
5.58k
5.36k (x0.96)
TOTAL
37.9k
32.85k (x0.87)

Multithread

i7-6500U

i5-2500K
Test#1 (Integers)
23.3k
45.51k (x1.95)
Test#2 (FP)
38.52k
40.83k (x1.06)
Test#3 (Generic, ZIP)
9.95k
20.7k (x2.08)
Test#1 (Memory)
6.95k
4.79k (x0.69)
TOTAL
78.72k
111.83k (x1.42)

Performance/W
i7-6500U
i5-2500K
Test#1 (Integers)
1553 points/W
479 points/W
Test#2 (FP)
2568 points/W
430 points/W
Test#3 (Generic, ZIP)
663 points/W
218 points/W
Test#1 (Memory)
463 points/W
50 points/W
TOTAL
5248 points/W
1177 points/W

Performance/GHz
i7-6500U
i5-2500K
Test#1 (Integers)
3579 points/GHz
3200 points/GHz
Test#2 (FP)
5516 points/GHz
2818 points/GHz
Test#3 (Generic, ZIP)
1330 points/GHz
1411 points/GHz
Test#1 (Memory)
1801 points/GHz
1449 points/GHz
TOTAL
12225 points/GHz
8878 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