| | | | | | |

Core i5-6500 vs i7-6820HQ


Description
Both models i5-6500 and i7-6820HQ are based on Skylake architecture.

Sky Lake is also known as 6th generation Core. Include Thunderbolt 3.0, SATA Express and Iris Pro graphics with DirectX 12. It uses LGA 1151 socket for mainstream models and LGA 2066 for X-Series. Sky Lake comes with AVX2 support in all mainstreams CPUs and AVX-512 in some high end models.

Using the multithread performance as a reference, the i5-6500 gets a score of 179.4 k points while the i7-6820HQ gets 205.9 k points.

Summarizing, the i7-6820HQ is 1.1 times faster than the i5-6500 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
506e3
Core
Skylake-S
Skylake-H
Architecture
Base frecuency
3.2 GHz
2.7 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
LGA 1151
BGA1440
Cores/Threads
4/4
4/8
TDP
65 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
8192 kB
Date
September 2015
October 2015
Mean monothread perf.
53.7k points
50.1k points
Mean multithread perf.
179.44k points
205.89k 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
i5-6500
i7-6820HQ
Test#1 (Integers)
3.46k
3.18k (x0.92)
Test#2 (FP)
14.61k
13.02k (x0.89)
Test#3 (Generic, ZIP)
4.66k
4.17k (x0.9)
Test#1 (Memory)
6.99k
6.93k (x0.99)
TOTAL
29.71k
27.3k (x0.92)

Multithread

i5-6500

i7-6820HQ
Test#1 (Integers)
12.52k
13.26k (x1.06)
Test#2 (FP)
51.13k
62.23k (x1.22)
Test#3 (Generic, ZIP)
17.41k
20.34k (x1.17)
Test#1 (Memory)
3.9k
5.46k (x1.4)
TOTAL
84.96k
101.29k (x1.19)

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
i5-6500
i7-6820HQ
Test#1 (Integers)
13.07k
11.78k (x0.9)
Test#2 (FP)
20.23k
18.06k (x0.89)
Test#3 (Generic, ZIP)
4.93k
4.48k (x0.91)
Test#1 (Memory)
9.2k
7.12k (x0.77)
TOTAL
47.43k
41.44k (x0.87)

Multithread

i5-6500

i7-6820HQ
Test#1 (Integers)
49.62k
49.46k (x1)
Test#2 (FP)
74.82k
84.8k (x1.13)
Test#3 (Generic, ZIP)
18.46k
20.7k (x1.12)
Test#1 (Memory)
4.21k
4.77k (x1.13)
TOTAL
147.12k
159.73k (x1.09)

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i5-6500
i7-6820HQ
Test#1 (Integers)
22.89k
20.99k (x0.92)
Test#2 (FP)
19.87k
18.63k (x0.94)
Test#3 (Generic, ZIP)
4.58k
4.33k (x0.95)
Test#1 (Memory)
6.36k
6.15k (x0.97)
TOTAL
53.7k
50.1k (x0.93)

Multithread

i5-6500

i7-6820HQ
Test#1 (Integers)
84.36k
91.8k (x1.09)
Test#2 (FP)
72.91k
87.24k (x1.2)
Test#3 (Generic, ZIP)
16.08k
20.55k (x1.28)
Test#1 (Memory)
6.1k
6.3k (x1.03)
TOTAL
179.44k
205.89k (x1.15)

Performance/W
i5-6500
i7-6820HQ
Test#1 (Integers)
1298 points/W
2040 points/W
Test#2 (FP)
1122 points/W
1939 points/W
Test#3 (Generic, ZIP)
247 points/W
457 points/W
Test#1 (Memory)
94 points/W
140 points/W
TOTAL
2761 points/W
4575 points/W

Performance/GHz
i5-6500
i7-6820HQ
Test#1 (Integers)
6359 points/GHz
5831 points/GHz
Test#2 (FP)
5521 points/GHz
5174 points/GHz
Test#3 (Generic, ZIP)
1271 points/GHz
1204 points/GHz
Test#1 (Memory)
1766 points/GHz
1708 points/GHz
TOTAL
14917 points/GHz
13917 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