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Core i7-6820HQ vs i5-3470


Description
The i7-6820HQ is based on Skylake architecture while the i5-3470 is based on Ivy Bridge.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 159.7 k points while the i5-3470 gets 94.1 k points.

Summarizing, the i7-6820HQ is 1.7 times faster than the i5-3470 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
306a9
Core
Skylake-H
Ivy Bridge
Architecture
Base frecuency
2.7 GHz
3.2 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
BGA1440
LGA 1155
Cores/Threads
4/8
4/4
TDP
45 W
77 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
October 2015
June 2012
Mean monothread perf.
50.1k points
31.71k points
Mean multithread perf.
205.89k points
94.15k 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
i7-6820HQ
i5-3470
Test#1 (Integers)
3.18k
3.62k (x1.14)
Test#2 (FP)
13.02k
10.08k (x0.77)
Test#3 (Generic, ZIP)
4.17k
4.47k (x1.07)
Test#1 (Memory)
6.93k
5.39k (x0.78)
TOTAL
27.3k
23.56k (x0.86)

Multithread

i7-6820HQ

i5-3470
Test#1 (Integers)
13.26k
13.66k (x1.03)
Test#2 (FP)
62.23k
37.73k (x0.61)
Test#3 (Generic, ZIP)
20.34k
17.07k (x0.84)
Test#1 (Memory)
5.46k
8.57k (x1.57)
TOTAL
101.29k
77.04k (x0.76)

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
i5-3470
Test#1 (Integers)
11.54k
12.26k (x1.06)
Test#2 (FP)
16.69k
11k (x0.66)
Test#3 (Generic, ZIP)
4.51k
4.76k (x1.06)
Test#1 (Memory)
7.27k
5.39k (x0.74)
TOTAL
40.01k
33.42k (x0.84)

Multithread

i7-6820HQ

i5-3470
Test#1 (Integers)
48.5k
46.54k (x0.96)
Test#2 (FP)
77.02k
41.4k (x0.54)
Test#3 (Generic, ZIP)
21.3k
18.09k (x0.85)
Test#1 (Memory)
5.24k
8.69k (x1.66)
TOTAL
152.06k
114.73k (x0.75)

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
i5-3470
Test#1 (Integers)
11.78k
11.51k (x0.98)
Test#2 (FP)
18.06k
11.12k (x0.62)
Test#3 (Generic, ZIP)
4.48k
4.44k (x0.99)
Test#1 (Memory)
7.12k
4.64k (x0.65)
TOTAL
41.44k
31.71k (x0.77)

Multithread

i7-6820HQ

i5-3470
Test#1 (Integers)
49.46k
37.93k (x0.77)
Test#2 (FP)
84.8k
36.37k (x0.43)
Test#3 (Generic, ZIP)
20.7k
14.14k (x0.68)
Test#1 (Memory)
4.77k
5.71k (x1.2)
TOTAL
159.73k
94.15k (x0.59)

Performance/W
i7-6820HQ
i5-3470
Test#1 (Integers)
1099 points/W
493 points/W
Test#2 (FP)
1884 points/W
472 points/W
Test#3 (Generic, ZIP)
460 points/W
184 points/W
Test#1 (Memory)
106 points/W
74 points/W
TOTAL
3550 points/W
1223 points/W

Performance/GHz
i7-6820HQ
i5-3470
Test#1 (Integers)
3273 points/GHz
3196 points/GHz
Test#2 (FP)
5016 points/GHz
3090 points/GHz
Test#3 (Generic, ZIP)
1244 points/GHz
1234 points/GHz
Test#1 (Memory)
1977 points/GHz
1289 points/GHz
TOTAL
11510 points/GHz
8809 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