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Core i7-4770K vs i7-6820HQ


Description
The i7-4770K is based on Haswell architecture while the i7-6820HQ is based on Skylake.

Using the multithread performance as a reference, the i7-4770K gets a score of 173.9 k points while the i7-6820HQ gets 205.9 k points.

Summarizing, the i7-6820HQ is 1.2 times faster than the i7-4770K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306c3
506e3
Core
Haswell
Skylake-H
Architecture
Base frecuency
3.5 GHz
2.7 GHz
Boost frecuency
3.9 GHz
3.6 GHz
Socket
LGA 1150
BGA1440
Cores/Threads
4/8
4/8
TDP
84 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
8192 kB
Date
June 2013
October 2015
Mean monothread perf.
43.21k points
50.1k points
Mean multithread perf.
173.93k 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
i7-4770K
i7-6820HQ
Test#1 (Integers)
4.5k
3.18k (x0.71)
Test#2 (FP)
11.23k
13.02k (x1.16)
Test#3 (Generic, ZIP)
5.16k
4.17k (x0.81)
Test#1 (Memory)
5.28k
6.93k (x1.31)
TOTAL
26.17k
27.3k (x1.04)

Multithread

i7-4770K

i7-6820HQ
Test#1 (Integers)
16.27k
13.26k (x0.82)
Test#2 (FP)
58.37k
62.23k (x1.07)
Test#3 (Generic, ZIP)
24.33k
20.34k (x0.84)
Test#1 (Memory)
10.42k
5.46k (x0.52)
TOTAL
109.39k
101.29k (x0.93)

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
i7-4770K
i7-6820HQ
Test#1 (Integers)
13.78k
11.78k (x0.86)
Test#2 (FP)
12.7k
18.06k (x1.42)
Test#3 (Generic, ZIP)
5.23k
4.48k (x0.86)
Test#1 (Memory)
4.92k
7.12k (x1.45)
TOTAL
36.63k
41.44k (x1.13)

Multithread

i7-4770K

i7-6820HQ
Test#1 (Integers)
56.86k
49.46k (x0.87)
Test#2 (FP)
60.65k
84.8k (x1.4)
Test#3 (Generic, ZIP)
24.02k
20.7k (x0.86)
Test#1 (Memory)
5.22k
4.77k (x0.91)
TOTAL
146.75k
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
i7-4770K
i7-6820HQ
Test#1 (Integers)
21.28k
20.99k (x0.99)
Test#2 (FP)
12.25k
18.63k (x1.52)
Test#3 (Generic, ZIP)
4.78k
4.33k (x0.91)
Test#1 (Memory)
4.9k
6.15k (x1.25)
TOTAL
43.21k
50.1k (x1.16)

Multithread

i7-4770K

i7-6820HQ
Test#1 (Integers)
86.17k
91.8k (x1.07)
Test#2 (FP)
56.81k
87.24k (x1.54)
Test#3 (Generic, ZIP)
21.88k
20.55k (x0.94)
Test#1 (Memory)
9.07k
6.3k (x0.69)
TOTAL
173.93k
205.89k (x1.18)

Performance/W
i7-4770K
i7-6820HQ
Test#1 (Integers)
1026 points/W
2040 points/W
Test#2 (FP)
676 points/W
1939 points/W
Test#3 (Generic, ZIP)
260 points/W
457 points/W
Test#1 (Memory)
108 points/W
140 points/W
TOTAL
2071 points/W
4575 points/W

Performance/GHz
i7-4770K
i7-6820HQ
Test#1 (Integers)
5456 points/GHz
5831 points/GHz
Test#2 (FP)
3141 points/GHz
5174 points/GHz
Test#3 (Generic, ZIP)
1226 points/GHz
1204 points/GHz
Test#1 (Memory)
1257 points/GHz
1708 points/GHz
TOTAL
11079 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