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Core i7-4702MQ vs i7-6820HQ


Description
The i7-4702MQ is based on Haswell architecture while the i7-6820HQ is based on Skylake.

Using the multithread performance as a reference, the i7-4702MQ gets a score of 145.1 k points while the i7-6820HQ gets 205.9 k points.

Summarizing, the i7-6820HQ is 1.4 times faster than the i7-4702MQ . 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
2.2 GHz
2.7 GHz
Boost frecuency
3.2 GHz
3.6 GHz
Socket
Socket G3
BGA1440
Cores/Threads
4 /8
4/8
TDP
37 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
May 2013
October 2015
Mean monothread perf.
36.8k points
50.1k points
Mean multithread perf.
145.15k 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
i7-4702MQ
i7-6820HQ
Test#1 (Integers)
3.45k
3.18k (x0.92)
Test#2 (FP)
8.53k
13.02k (x1.53)
Test#3 (Generic, ZIP)
3.99k
4.17k (x1.05)
Test#1 (Memory)
3.51k
6.93k (x1.98)
TOTAL
19.47k
27.3k (x1.4)

Multithread

i7-4702MQ

i7-6820HQ
Test#1 (Integers)
11.93k
13.26k (x1.11)
Test#2 (FP)
42.4k
62.23k (x1.47)
Test#3 (Generic, ZIP)
18k
20.34k (x1.13)
Test#1 (Memory)
3.6k
5.46k (x1.52)
TOTAL
75.92k
101.29k (x1.33)

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
i7-4702MQ
i7-6820HQ
Test#1 (Integers)
18.98k
20.99k (x1.11)
Test#2 (FP)
9.5k
18.63k (x1.96)
Test#3 (Generic, ZIP)
4.32k
4.33k (x1)
Test#1 (Memory)
3.99k
6.15k (x1.54)
TOTAL
36.8k
50.1k (x1.36)

Multithread

i7-4702MQ

i7-6820HQ
Test#1 (Integers)
74.75k
91.8k (x1.23)
Test#2 (FP)
47.72k
87.24k (x1.83)
Test#3 (Generic, ZIP)
19.65k
20.55k (x1.05)
Test#1 (Memory)
3.02k
6.3k (x2.09)
TOTAL
145.15k
205.89k (x1.42)

Performance/W
i7-4702MQ
i7-6820HQ
Test#1 (Integers)
2020 points/W
2040 points/W
Test#2 (FP)
1290 points/W
1939 points/W
Test#3 (Generic, ZIP)
531 points/W
457 points/W
Test#1 (Memory)
82 points/W
140 points/W
TOTAL
3923 points/W
4575 points/W

Performance/GHz
i7-4702MQ
i7-6820HQ
Test#1 (Integers)
5932 points/GHz
5831 points/GHz
Test#2 (FP)
2968 points/GHz
5174 points/GHz
Test#3 (Generic, ZIP)
1351 points/GHz
1204 points/GHz
Test#1 (Memory)
1248 points/GHz
1708 points/GHz
TOTAL
11499 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