| | | |

Core i7-6820HQ vs i5-5675R


Description
The i7-6820HQ is based on Skylake architecture while the i5-5675R is based on Broadwell.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 206.3 k points while the i5-5675R gets 194.2 k points.

Summarizing, the i7-6820HQ is 1.1 times faster than the i5-5675R. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
40671
Core
Skylake-H
Bradwell-H
Architecture
Base frecuency
2.7 GHz
3.1 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
BGA1440
BGA1364
Cores/Threads
4/8
4/4
TDP
45 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
4096 kB
Date
October 2015
Jun 2015

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
i7-6820HQ
i5-5675R
Test#1 (Integers)
3180
4141 (30.22%)
Test#2 (FP)
13020
14355 (10.25%)
Test#3 (Generic, ZIP)
4169
4940 (18.50%)
Test#1 (Memory)
6931
5474 (-21.02%)
TOTAL
27299
28910 (5.90%)

Multithread

i7-6820HQ

i5-5675R
Test#1 (Integers)
13259
16021 (20.83%)
Test#2 (FP)
62228
54597 (-12.26%)
Test#3 (Generic, ZIP)
20342
18694 (-8.10%)
Test#1 (Memory)
5464
16865 (208.69%)
TOTAL
101292
106178 (4.82%)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-6820HQ
i5-5675R
Test#1 (Integers)
11536
12856 (11.44%)
Test#2 (FP)
16687
16855 (1.00%)
Test#3 (Generic, ZIP)
4514
5190 (14.96%)
Test#1 (Memory)
7273
5494 (-24.47%)
TOTAL
40011
40394 (0.96%)

Multithread

i7-6820HQ

i5-5675R
Test#1 (Integers)
48501
50071 (3.24%)
Test#2 (FP)
77016
64608 (-16.11%)
Test#3 (Generic, ZIP)
21301
19838 (-6.87%)
Test#1 (Memory)
5242
17086 (225.94%)
TOTAL
152060
151603 (-0.30%)

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
i5-5675R
Test#1 (Integers)
11784
12881 (9.31%)
Test#2 (FP)
18056
18271 (1.19%)
Test#3 (Generic, ZIP)
4479
5120 (14.31%)
Test#1 (Memory)
7117
5450 (-23.43%)
TOTAL
41437
41722 (0.69%)

Multithread

i7-6820HQ

i5-5675R
Test#1 (Integers)
49458
49914 (0.92%)
Test#2 (FP)
84798
70302 (-17.09%)
Test#3 (Generic, ZIP)
20703
19689 (-4.90%)
Test#1 (Memory)
4770
16924 (254.78%)
TOTAL
159730
156830 (-1.82%)

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
i7-6820HQ
i5-5675R
Test#1 (Integers)
21147
21912 (3.62%)
Test#2 (FP)
18663
18590 (-0.39%)
Test#3 (Generic, ZIP)
4359
5203 (19.34%)
Test#1 (Memory)
6240
5723 (-8.29%)
TOTAL
50409
51428 (2.02%)

Multithread

i7-6820HQ

i5-5675R
Test#1 (Integers)
91901
84920 (-7.60%)
Test#2 (FP)
87330
72090 (-17.45%)
Test#3 (Generic, ZIP)
20715
20126 (-2.84%)
Test#1 (Memory)
6325
17065 (169.79%)
TOTAL
206271
194201 (-5.85%)

Performance/W
i7-6820HQ
i5-5675R
Test#1 (Integers)
2042 points/W
1306 points/W
Test#2 (FP)
1941 points/W
1109 points/W
Test#3 (Generic, ZIP)
460 points/W
310 points/W
Test#1 (Memory)
141 points/W
263 points/W
TOTAL
4584 points/W
2988 points/W

Performance/GHz
i7-6820HQ
i5-5675R
Test#1 (Integers)
5874 points/GHz
6087 points/GHz
Test#2 (FP)
5184 points/GHz
5164 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1445 points/GHz
Test#1 (Memory)
1733 points/GHz
1590 points/GHz
TOTAL
14002 points/GHz
14286 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