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Core i7-5820K vs i7-6820HQ


Description
The i7-5820K is based on Haswell architecture while the i7-6820HQ is based on Skylake.

Using the multithread performance as a reference, the i7-5820K gets a score of 129.1 k points while the i7-6820HQ gets 159.7 k points.

Summarizing, the i7-6820HQ is 1.2 times faster than the i7-5820K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306f2
506e3
Core
Haswell-E
Skylake-H
Architecture
Base frecuency
3.3 GHz
2.7 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
LGA 1150
BGA1440
Cores/Threads
6/12
4/8
TDP
140 W
45 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
15360 kB
8192 kB
Date
September 2014
October 2015
Mean monothread perf.
31.53k points
50.1k points
Mean multithread perf.
129.06k 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
i7-5820K
i7-6820HQ
Test#1 (Integers)
3.82k
3.18k (x0.83)
Test#2 (FP)
9.64k
13.02k (x1.35)
Test#3 (Generic, ZIP)
4.29k
4.17k (x0.97)
Test#1 (Memory)
3.78k
6.93k (x1.83)
TOTAL
21.53k
27.3k (x1.27)

Multithread

i7-5820K

i7-6820HQ
Test#1 (Integers)
18.07k
13.26k (x0.73)
Test#2 (FP)
64.25k
62.23k (x0.97)
Test#3 (Generic, ZIP)
27.03k
20.34k (x0.75)
Test#1 (Memory)
8.03k
5.46k (x0.68)
TOTAL
117.38k
101.29k (x0.86)

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
i7-5820K
i7-6820HQ
Test#1 (Integers)
12.03k
11.78k (x0.98)
Test#2 (FP)
11.23k
18.06k (x1.61)
Test#3 (Generic, ZIP)
4.55k
4.48k (x0.98)
Test#1 (Memory)
3.72k
7.12k (x1.91)
TOTAL
31.53k
41.44k (x1.31)

Multithread

i7-5820K

i7-6820HQ
Test#1 (Integers)
49.48k
49.46k (x1)
Test#2 (FP)
52.21k
84.8k (x1.62)
Test#3 (Generic, ZIP)
19.7k
20.7k (x1.05)
Test#1 (Memory)
7.67k
4.77k (x0.62)
TOTAL
129.06k
159.73k (x1.24)

Performance/W
i7-5820K
i7-6820HQ
Test#1 (Integers)
353 points/W
1099 points/W
Test#2 (FP)
373 points/W
1884 points/W
Test#3 (Generic, ZIP)
141 points/W
460 points/W
Test#1 (Memory)
55 points/W
106 points/W
TOTAL
922 points/W
3550 points/W

Performance/GHz
i7-5820K
i7-6820HQ
Test#1 (Integers)
3343 points/GHz
3273 points/GHz
Test#2 (FP)
3119 points/GHz
5016 points/GHz
Test#3 (Generic, ZIP)
1264 points/GHz
1244 points/GHz
Test#1 (Memory)
1033 points/GHz
1977 points/GHz
TOTAL
8759 points/GHz
11510 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