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Core i7-6820HQ vs i5-2500K


Description
The i7-6820HQ is based on Skylake architecture while the i5-2500K is based on Sandy Bridge.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 159.7 k points while the i5-2500K gets 111.8 k points.

Summarizing, the i7-6820HQ is 1.4 times faster than the i5-2500K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
206a7
Core
Skylake-H
Sandy Bridge
Architecture
Base frecuency
2.7 GHz
3.3 GHz
Boost frecuency
3.6 GHz
3.7 GHz
Socket
BGA1440
LGA 1155
Cores/Threads
4/8
4/4
TDP
45 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
8192 kB
6144 kB
Date
October 2015
January 2011

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
i7-6820HQ
i5-2500K
Test#1 (Integers)
11784
11840 (0.48%)
Test#2 (FP)
18056
10428 (-42.25%)
Test#3 (Generic, ZIP)
4479
5221 (16.57%)
Test#1 (Memory)
7117
5360 (-24.69%)
TOTAL
41437
32849 (-20.72%)

Multithread

i7-6820HQ

i5-2500K
Test#1 (Integers)
49458
45509 (-7.99%)
Test#2 (FP)
84798
40829 (-51.85%)
Test#3 (Generic, ZIP)
20703
20705 (0.01%)
Test#1 (Memory)
4770
4790 (0.42%)
TOTAL
159730
111832 (-29.99%)

Performance/W
i7-6820HQ
i5-2500K
Test#1 (Integers)
1099 points/W
479 points/W
Test#2 (FP)
1884 points/W
430 points/W
Test#3 (Generic, ZIP)
460 points/W
218 points/W
Test#1 (Memory)
106 points/W
50 points/W
TOTAL
3550 points/W
1177 points/W

Performance/GHz
i7-6820HQ
i5-2500K
Test#1 (Integers)
3273 points/GHz
3200 points/GHz
Test#2 (FP)
5016 points/GHz
2818 points/GHz
Test#3 (Generic, ZIP)
1244 points/GHz
1411 points/GHz
Test#1 (Memory)
1977 points/GHz
1449 points/GHz
TOTAL
11510 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. 3.7.8